diff --git a/.gitignore b/.gitignore
index d0bf13c1..0447d637 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,16 @@
 node_modules/
 build/
-.idea
-pids
-logs
+out/
 .idea/
-contracts/flattened/*.sol
\ No newline at end of file
+pids/
+logs/
+cache/
+
+contracts/flattened/*.sol
+
+# foundry lib
+lib/forge-std/
+
+.env
+package-lock.json
+yarn.lock
diff --git a/.soliumignore b/.soliumignore
deleted file mode 100644
index 9894f8e2..00000000
--- a/.soliumignore
+++ /dev/null
@@ -1,9 +0,0 @@
-node_modules
-contracts/Migrations.sol
-contracts/Seriality
-contracts/tool
-contracts/flattened
-contracts/interface
-contracts/mock
-contracts/test
-contracts/lib
\ No newline at end of file
diff --git a/.soliumrc.json b/.soliumrc.json
deleted file mode 100644
index 008b565d..00000000
--- a/.soliumrc.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "extends": "solium:recommended",
-  "plugins": ["security"],
-  "rules": {
-    "quotes": ["error", "double"],
-    "indentation": ["error", 2],
-    "linebreak-style": ["error", "unix"]
-  }
-}
diff --git a/BLSkeystore.json b/BLSkeystore.json
new file mode 100644
index 00000000..908cffe2
--- /dev/null
+++ b/BLSkeystore.json
@@ -0,0 +1,45 @@
+{
+  "public_key": [
+    "8f2bc5decb56ad5f88d4c704f6ad616d5038cf1bc068419f4d7f3457a853d74048b1ba3531185d6d36d6bd6881034505",
+    "83126cd32592a6be5e9658805c5da32db2f5d39f2f294a230cf1689b52f8b8be2135802f6b6ca6b11765331de2bb8def",
+    "b9cafd2354b57acadd88992fd9dc38986ec29d8efd793acb693f0d0f6b8397cb2a9f8d66e01253579c7d38242d3760f6",
+    "b373f6a4dfc54e625c2796da0789cbb243e6a285329c3c075ab1a9268db45951a2d6c2a2aafd558efc8c5857bd71dbc0",
+    "ac0646a7851a75f2d0d8239e717ed1874ed83906eff3845cc7a29abd6064adb8a48c221c3d12624f136292b19c0d92de",
+    "992354e0ff65e8cb4088a72a241992bf68a192ea685f810bda7a193dc056af3be4bf1f65073cf5e906676d32f2eabe60",
+    "95d8bb8660a34a374a05a3b9c59609f4a6f5598bba8240b59ef61e94ed6161e00108bac0b817bcb4cf13001924d19539",
+    "b4c030c9c012ab39aea3117fc96203b18ffb5e979ae44f17de64e212a1a97975d419e2060294940a285778e2100ff023",
+    "ac1e598ae0ccbeeaafa31bc6faefa85c2ae3138699cac79169cd718f1a38445201454ec092a86f200e08a15266bdc6e9",
+    "af3ca3f530c61bf7e6b82db58dc6bd4c75192044128004510290289330ae1d33269ec873e0a8e890c2619cf3868c8880",
+    "987c6c786c2d293f4b5337344c8d29ab0264f80851d5698e597e201f7743af3f848a1ffb7c4802a73e06696d99f95e45",
+    "97d9423cb780f6a09e759a7327fc5e2542ddc54f9d2cd1b836abf30948f45059709510e8421df03ceccf2ef2ecc9c594",
+    "b71f0d38cc1d05995126fa0ba311541f0ed3c5c7df64e33c8037afa5d72a5a38a83103433b204f1512502748656cf06f",
+    "b800c8a040b76946ca14470e7a67c9ca76bf9868730336be57235505e1786f3417a969587be2ac7e6aad1ab21db9cff9",
+    "a625e9aa0681a842091d9cbc26daa9497a9d305acc36d04f2cb42e9aed90a561514f607625fbf84b23f98ce4baadadb5",
+    "98a7250b7492047cdb0b388e094db5dc073bba5a4bfc9ed2fc0ec68cba5cec1aad06d72a91ed03211f583f52e5e5d221",
+    "a8fa139e60271c25de8d5c83a4d0d15107152c193897d2307d334425c40d31104b6ee507e5eb3402419bca0625b58835",
+    "905024253dae51eb1836a3da59e5883f48d768bb73b4c8be76fd3a124af6ed252941653619ab1e429253fc2586c65383",
+    "a52c02e1279cbadb974a02404d7cece18d70a2835d004a4e7a25c9e120d794f62e76b9728a13ee84bc6567716238c59f",
+    "aacd7b81831bc19de3a26f013d2bba8cf5a76cf3c6acee742bace02e2a809a96f72245fb6cb54874b72d300a42b14fe3",
+    "8f16d65d4898459265d237328b419fad130b2cf2ee381e0a0fc3d5898e81b577a0157d0b99b92eda8891b46ff62c9ea9",
+    "90ddfd09c9af4d0b693a4013b7e42595ea7bb60ee7fb942a8460d63cd5f0e4c3138467b7c2a50518fa26fe9a2450dbc0",
+    "a2ec2a7e46bb5d99e7307c39b9ba96e0ef245e2588658b5ccb9a8c2f682a111de5775fec6e7508d19e06be40a260cc7d",
+    "86d0488587c7dd682988d13c7db0bf9994dd21fa886244a1ddd24aea753de38d32d0c762bd6fbeb137b1ae3118c65885",
+    "b3e34b6aff02bf146faf47e27d813e3c1bcf2a9a424c2ec95da39ea9dd974aeb239e47bd183ac75e8502ca6e610caf7c",
+    "b45752f376347597826c52202dd5a4695b7f73b4a111d9a39f8bd43220984ecd428280779befa314f4b24ce537b7448b",
+    "83c96f5cab6a2d0fb3c4c96c7a1bf992c776f10aa6e321157df8b07359bbfdc111587f529d3ed867b1c69a98f57fea6b",
+    "9107b995298a0a2becc7a1feecc6d8a0cae95d66384ef08adb9dc74023357fb5c1dac1ce9de936eb4015d276150a4933",
+    "aa7049b3ce18e503b8546b08ef48056780cfeb4a48e50f30d0da8a2b6261e77ed19c40bc8050df874e992072db591575",
+    "b28f8221b85d07f04d6037a56d96e621d4c25bf3aaff3e745231bcf102dfa34508ca92814854019487b6dcecdaa0bab0",
+    "a75e47260f047889767fc8cc7121440afa2b4fc372ebc1ef39f72912247ad2efa1e0dc4022d4c44ecab95032fa30df49",
+    "a76daaa9e8741e7d9a5970f10bc585ce42a3e5ce4e53faadf3327a3b7759223e35aeb30214c0ecf2bca46a2ea1c45855",
+    "a031dcf5b47643630aba6e0625c21da9e0f76388ea6bcdd33ede31f51a1d080ba322ba0c9aaa5137b18fd3c47453aec9",
+    "a9be92a80b0909c491cd9475001cc34ee1a766b95109cdc32c8cdfcf7135c8d0e862b8612d0ea79e74d02a09d5403993",
+    "b490893e8eb5f101b5178e6ff8279fe14eb78b764290095e6e595dfcc11371925dc0af4b9d4bce8e69ac83ce57984e3a",
+    "89ca38e186e1378b0778cb8d4f0f6d4eef4a15db97a4596a44621548090dfb893f833689b580b0f60a934fd31c271bb3",
+    "8b20e24ad933b9af0a55a6d34a08e10b832a10f389154dc0dec79b63a38b79ea2f0d9f4fa664b3c06b1b2437cb58236f",
+    "a1484f2b97137fb957daad064ca6cbe5b99549249ceb51f42e928ec091f94fed642ddffe3a9916769538decd0a9937bf",
+    "89abcc45efe76bec679ca35c27adbd66fb9712a278e3c8530ab25cfaf997765aee574f5c5745dbb873dbf7e961684347",
+    "8addebd6ef7609df215e006987040d0a643858f3a4d791beaa77177d67529160e645fac54f0d8acdcd5a088393cb6681",
+    "85e6972fc98cd3c81d64d40e325acfed44365b97a7567a27939c14dbc7512ddcf54cb1284eb637cfa308ae4e00cb5588"
+  ]
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index f10b0dae..b37ba89c 100644
--- a/README.md
+++ b/README.md
@@ -1,49 +1,65 @@
 # bsc-genesis-contracts
 
-This repo hold all the genesis contracts on Binance Smart chain. More details in [doc-site](https://github.com/binance-chain/docs-site/blob/add-bsc/docs/smart-chain/guides/concepts/system-contract.md).
+This repo hold all the genesis contracts on Binance Smart chain. More details in [doc-site](https://docs.bnbchain.org/docs/learn/system-contract).
 
 ## Prepare
 
-Install dependency:
+Install node.js dependency:
 ```shell script
 npm install
-``` 
-
-## unit test
+```
 
-Generate contracts for testing:
+Install foundry:
 ```shell script
-# the first account of ganache
-node generate-system.js --mock true
-node generate-systemReward.js --mock true
-node generate-validatorset.js --mock true
-node generate-system.js --mock true
-node generate-slash.js --mock true
-node generate-crosschain.js --mock true
-node generate-tokenhub.js --mock true
-node generate-tendermintlightclient.js --mock true
-node generate-relayerincentivizecontract.js --roundSize 30 --maximumWeight 3 --mock true
-```
-
-Start ganache:
-```shell script
-ganache-cli --mnemonic 'clock radar mass judge dismiss just intact mind resemble fringe diary casino' --gasLimit 13000000  -e 10000
+curl -L https://foundry.paradigm.xyz | bash
+foundryup
+forge install --no-git --no-commit foundry-rs/forge-std@v1.1.1
+```
+
+Please make sure your dependency version is as follows:
+
+Node: v12.18.3 
+
+Truffle: v5.1.31 
+
+Solc: 0.6.4+commit.1dca32f3
+
+Tips: You can manage multi version of Solc and Node:
+```Shell
+## Install solc-select and solc
+pip3 install solc-select
+solc-select install 0.6.4 && solc-select use 0.6.4
+
+## Install nvm and node
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.2/install.sh | bash
+nvm install  12.18.3 && nvm use 12.18.3
+```
+
+## Unit test
+
+Add follow line to .env file in project dir, replace `archive_node` with a valid bsc mainnet node url which should be in archive mode:
+
+```text
+RPC_BSC=${archive_node}
 ```
 
-Run truffle test:
+You can get a free archive node endpoint from https://nodereal.io/.
+
+Run forge test:
 ```shell script
-truffle compile
-truffle migrate
-truffle test
+forge test
 ```
 
-Flatten all system contracts:
+## Flatten all system contracts
+
 ```shell script
 npm run flatten
 ```
 
-## how to generate genesis file.
- 
+All system contracts will be flattened and output into `${workspace}/contracts/flattened/`.
+
+## How to generate genesis file
+
 1. Edit `init_holders.js` file to alloc the initial BNB holder.
 2. Edit `validators.js` file to alloc the initial validator set.
 3. Edit `generate-validatorset.js` file to change `fromChainId` and `toChainId`,
@@ -51,6 +67,25 @@ npm run flatten
 5. Edit `generate-tendermintlightclient.js` file to change `chainID` and `initConsensusStateBytes`.
 6. run ` node generate-genesis.js` will generate genesis.json
 
+## How to generate mainnet/testnet/QA genesis file
+
+```shell 
+npm run generate-mainnet
+npm run generate-testnet
+npm run generate-QA
+```
+Check the `genesis.json` file and you can get the exact compiled bytecode for different network.
+
+## How to update contract interface for test
+
+```shell script
+// get metadata
+forge build
+
+// generate interface
+cast interface ${workspace}/out/{contract_name}.sol/${contract_name}.json -p ^0.8.10 -n ${contract_name} > ${workspace}/lib/interface/I${contract_name}.sol
+```
+
 ## License
 
 The library is licensed under the [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0),
diff --git a/abi/README.md b/abi/README.md
index e41b9d7d..dbbf341d 100644
--- a/abi/README.md
+++ b/abi/README.md
@@ -1,14 +1,15 @@
 # ABI Files for Build-In System Contracts
 
-| Contract Name         | Address                                   | ABI file name                                      |
-| ----------------------|-------------------------------------------|--------------------------------------------------- |
-| BSCValidatorSet       |0x0000000000000000000000000000000000001000 | [bscvalidatorset](bscvalidatorset.abi)             |
-| SlashIndicator        |0x0000000000000000000000000000000000001001 | [slashindicator](slashindicator.abi)               |
-| SystemReward          |0x0000000000000000000000000000000000001002 | [systemreward](systemreward.abi)               |
-| TendermintLightClient |0x0000000000000000000000000000000000001003 | [tendermintlightclient](tendermintlightclient.abi) |
-| TokenHub              |0x0000000000000000000000000000000000001004 | [tokenhub](tokenhub.abi)                           |
-| RelayerIncentivize    |0x0000000000000000000000000000000000001005 | [relayerincentivize](relayerincentivize.abi)       |
-| RelayerHub            |0x0000000000000000000000000000000000001006 | [relayerhub](relayerhub.abi)                       |
-| GovHub                |0x0000000000000000000000000000000000001007 | [govhub](govhub.abi)                               |
-| TokenManager          |0x0000000000000000000000000000000000001008 | [tokenmanager](tokenmanager.abi)                   |
-| CrossChain            |0x0000000000000000000000000000000000002000 | [crosschain](crosschain.abi)                       |
\ No newline at end of file
+| Contract Name         | Address                                    | ABI file name                                      |
+|-----------------------|--------------------------------------------|----------------------------------------------------|
+| BSCValidatorSet       | 0x0000000000000000000000000000000000001000 | [bscvalidatorset](bscvalidatorset.abi)             |
+| SlashIndicator        | 0x0000000000000000000000000000000000001001 | [slashindicator](slashindicator.abi)               |
+| SystemReward          | 0x0000000000000000000000000000000000001002 | [systemreward](systemreward.abi)                   |
+| TendermintLightClient | 0x0000000000000000000000000000000000001003 | [tendermintlightclient](tendermintlightclient.abi) |
+| TokenHub              | 0x0000000000000000000000000000000000001004 | [tokenhub](tokenhub.abi)                           |
+| RelayerIncentivize    | 0x0000000000000000000000000000000000001005 | [relayerincentivize](relayerincentivize.abi)       |
+| RelayerHub            | 0x0000000000000000000000000000000000001006 | [relayerhub](relayerhub.abi)                       |
+| GovHub                | 0x0000000000000000000000000000000000001007 | [govhub](govhub.abi)                               |
+| TokenManager          | 0x0000000000000000000000000000000000001008 | [tokenmanager](tokenmanager.abi)                   |
+| CrossChain            | 0x0000000000000000000000000000000000002000 | [crosschain](crosschain.abi)                       |
+| Staking               | 0x0000000000000000000000000000000000002001 | [staking](staking.abi)                             |
\ No newline at end of file
diff --git a/abi/bscvalidatorset.abi b/abi/bscvalidatorset.abi
index c3194b70..207effaf 100644
--- a/abi/bscvalidatorset.abi
+++ b/abi/bscvalidatorset.abi
@@ -1,1016 +1,1451 @@
 [
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "batchTransfer",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			},
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "reason",
-				"type": "string"
-			}
-		],
-		"name": "batchTransferFailed",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "reason",
-				"type": "bytes"
-			}
-		],
-		"name": "batchTransferLowerFailed",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "deprecatedDeposit",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address payable",
-				"name": "validator",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "directTransfer",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address payable",
-				"name": "validator",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "directTransferFail",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "message",
-				"type": "string"
-			}
-		],
-		"name": "failReasonWithStr",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "paramChange",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "systemTransfer",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "unexpectedPackage",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "validatorDeposit",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			}
-		],
-		"name": "validatorEmptyJailed",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "validatorFelony",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			}
-		],
-		"name": "validatorJailed",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "validatorMisdemeanor",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [],
-		"name": "validatorSetUpdated",
-		"type": "event"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "DUSTY_INCOMING",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_CHECK_VALIDATORS",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_LEN_OF_VAL_MISMATCH",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_RELAYFEE_TOO_LARGE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_UNKNOWN_PACKAGE_TYPE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "EXPIRE_TIME_SECOND_GAP",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INIT_VALIDATORSET_BYTES",
-		"outputs": [
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "JAIL_MESSAGE_TYPE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAX_NUM_OF_VALIDATORS",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "PRECISION",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATORS_UPDATE_MESSAGE_TYPE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"name": "currentValidatorSet",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "consensusAddress",
-				"type": "address"
-			},
-			{
-				"internalType": "address payable",
-				"name": "feeAddress",
-				"type": "address"
-			},
-			{
-				"internalType": "address",
-				"name": "BBCFeeAddress",
-				"type": "address"
-			},
-			{
-				"internalType": "uint64",
-				"name": "votingPower",
-				"type": "uint64"
-			},
-			{
-				"internalType": "bool",
-				"name": "jailed",
-				"type": "bool"
-			},
-			{
-				"internalType": "uint256",
-				"name": "incoming",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"name": "currentValidatorSetMap",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "expireTimeSecondGap",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "numOfJailed",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "totalInComing",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "init",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleSynPackage",
-		"outputs": [
-			{
-				"internalType": "bytes",
-				"name": "responsePayload",
-				"type": "bytes"
-			}
-		],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleFailAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "valAddr",
-				"type": "address"
-			}
-		],
-		"name": "deposit",
-		"outputs": [],
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "getValidators",
-		"outputs": [
-			{
-				"internalType": "address[]",
-				"name": "",
-				"type": "address[]"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			}
-		],
-		"name": "getIncoming",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			}
-		],
-		"name": "misdemeanor",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			}
-		],
-		"name": "felony",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "updateParam",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	}
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "batchTransfer",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "reason",
+        "type": "string"
+      }
+    ],
+    "name": "batchTransferFailed",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "reason",
+        "type": "bytes"
+      }
+    ],
+    "name": "batchTransferLowerFailed",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "deprecatedDeposit",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "deprecatedFinalityRewardDeposit",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address payable",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "directTransfer",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address payable",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "directTransferFail",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "message",
+        "type": "string"
+      }
+    ],
+    "name": "failReasonWithStr",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "feeBurned",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "finalityRewardDeposit",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "systemTransfer",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "unexpectedPackage",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "validatorDeposit",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "validatorEmptyJailed",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "validatorEnterMaintenance",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "validatorExitMaintenance",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "validatorFelony",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "validatorJailed",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "validatorMisdemeanor",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [],
+    "name": "validatorSetUpdated",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BURN_ADDRESS",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BURN_RATIO_SCALE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "DUSTY_INCOMING",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "EPOCH",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_CHECK_VALIDATORS",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_LEN_OF_VAL_MISMATCH",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_RELAYFEE_TOO_LARGE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_UNKNOWN_PACKAGE_TYPE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "EXPIRE_TIME_SECOND_GAP",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_BURN_RATIO",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_FINALITY_REWARD_RATIO",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_MAINTAIN_SLASH_SCALE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_MAX_NUM_OF_MAINTAINING",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_NUM_OF_CABINETS",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_VALIDATORSET_BYTES",
+    "outputs": [
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "JAIL_MESSAGE_TYPE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAX_NUM_OF_VALIDATORS",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "PRECISION",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATORS_UPDATE_MESSAGE_TYPE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "burnRatio",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "burnRatioInitialized",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "index",
+        "type": "uint256"
+      }
+    ],
+    "name": "canEnterMaintenance",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "name": "currentValidatorSet",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "consensusAddress",
+        "type": "address"
+      },
+      {
+        "internalType": "address payable",
+        "name": "feeAddress",
+        "type": "address"
+      },
+      {
+        "internalType": "address",
+        "name": "BBCFeeAddress",
+        "type": "address"
+      },
+      {
+        "internalType": "uint64",
+        "name": "votingPower",
+        "type": "uint64"
+      },
+      {
+        "internalType": "bool",
+        "name": "jailed",
+        "type": "bool"
+      },
+      {
+        "internalType": "uint256",
+        "name": "incoming",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "currentValidatorSetMap",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "valAddr",
+        "type": "address"
+      }
+    ],
+    "name": "deposit",
+    "outputs": [],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address[]",
+        "name": "valAddrs",
+        "type": "address[]"
+      },
+      {
+        "internalType": "uint256[]",
+        "name": "weights",
+        "type": "uint256[]"
+      }
+    ],
+    "name": "distributeFinalityReward",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "enterMaintenance",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "exitMaintenance",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "expireTimeSecondGap",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "felony",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "finalityRewardRatio",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "_validator",
+        "type": "address"
+      }
+    ],
+    "name": "getCurrentValidatorIndex",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "getIncoming",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "getLivingValidators",
+    "outputs": [
+      {
+        "internalType": "address[]",
+        "name": "",
+        "type": "address[]"
+      },
+      {
+        "internalType": "bytes[]",
+        "name": "",
+        "type": "bytes[]"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "getMiningValidators",
+    "outputs": [
+      {
+        "internalType": "address[]",
+        "name": "",
+        "type": "address[]"
+      },
+      {
+        "internalType": "bytes[]",
+        "name": "",
+        "type": "bytes[]"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "getValidators",
+    "outputs": [
+      {
+        "internalType": "address[]",
+        "name": "",
+        "type": "address[]"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "getWorkingValidatorCount",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "workingValidatorCount",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleFailAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleSynPackage",
+    "outputs": [
+      {
+        "internalType": "bytes",
+        "name": "responsePayload",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "init",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "isCurrentValidator",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "index",
+        "type": "uint256"
+      }
+    ],
+    "name": "isWorkingValidator",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "maintainSlashScale",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "maxNumOfCandidates",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "maxNumOfMaintaining",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "maxNumOfWorkingCandidates",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "misdemeanor",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "numOfCabinets",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "numOfJailed",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "numOfMaintaining",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "previousHeight",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "totalInComing",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "name": "validatorExtraSet",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "enterMaintenanceHeight",
+        "type": "uint256"
+      },
+      {
+        "internalType": "bool",
+        "name": "isMaintaining",
+        "type": "bool"
+      },
+      {
+        "internalType": "bytes",
+        "name": "voteAddress",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "stateMutability": "payable",
+    "type": "receive"
+  }
 ]
\ No newline at end of file
diff --git a/abi/crosschain.abi b/abi/crosschain.abi
index 815d0054..f8291385 100644
--- a/abi/crosschain.abi
+++ b/abi/crosschain.abi
@@ -1,864 +1,829 @@
 [
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			}
-		],
-		"name": "addChannel",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint16",
-				"name": "chainId",
-				"type": "uint16"
-			},
-			{
-				"indexed": true,
-				"internalType": "uint64",
-				"name": "oracleSequence",
-				"type": "uint64"
-			},
-			{
-				"indexed": true,
-				"internalType": "uint64",
-				"name": "packageSequence",
-				"type": "uint64"
-			},
-			{
-				"indexed": true,
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "payload",
-				"type": "bytes"
-			}
-		],
-		"name": "crossChainPackage",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"indexed": false,
-				"internalType": "bool",
-				"name": "isEnable",
-				"type": "bool"
-			}
-		],
-		"name": "enableOrDisableChannel",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "paramChange",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint8",
-				"name": "packageType",
-				"type": "uint8"
-			},
-			{
-				"indexed": true,
-				"internalType": "uint64",
-				"name": "packageSequence",
-				"type": "uint64"
-			},
-			{
-				"indexed": true,
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			}
-		],
-		"name": "receivedPackage",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "lowLevelData",
-				"type": "bytes"
-			}
-		],
-		"name": "unexpectedFailureAssertionInPackageHandler",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "reason",
-				"type": "string"
-			}
-		],
-		"name": "unexpectedRevertInPackageHandler",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "uint64",
-				"name": "packageSequence",
-				"type": "uint64"
-			},
-			{
-				"indexed": true,
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "payload",
-				"type": "bytes"
-			}
-		],
-		"name": "unsupportedPackage",
-		"type": "event"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ACK_PACKAGE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_KEY_PREFIX",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "FAIL_ACK_PACKAGE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INIT_BATCH_SIZE",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STORE_NAME",
-		"outputs": [
-			{
-				"internalType": "string",
-				"name": "",
-				"type": "string"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYN_PACKAGE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "batchSizeForOracle",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"name": "channelHandlerContractMap",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"name": "channelReceiveSequenceMap",
-		"outputs": [
-			{
-				"internalType": "uint64",
-				"name": "",
-				"type": "uint64"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"name": "channelSendSequenceMap",
-		"outputs": [
-			{
-				"internalType": "uint64",
-				"name": "",
-				"type": "uint64"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"name": "isRelayRewardFromSystemReward",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "oracleSequence",
-		"outputs": [
-			{
-				"internalType": "int64",
-				"name": "",
-				"type": "int64"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "previousTxHeight",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			},
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"name": "registeredContractChannelMap",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "txCounter",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "init",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "packageType",
-				"type": "uint8"
-			},
-			{
-				"internalType": "uint256",
-				"name": "relayFee",
-				"type": "uint256"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "encodePayload",
-		"outputs": [
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"payable": false,
-		"stateMutability": "pure",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "bytes",
-				"name": "payload",
-				"type": "bytes"
-			},
-			{
-				"internalType": "bytes",
-				"name": "proof",
-				"type": "bytes"
-			},
-			{
-				"internalType": "uint64",
-				"name": "height",
-				"type": "uint64"
-			},
-			{
-				"internalType": "uint64",
-				"name": "packageSequence",
-				"type": "uint64"
-			},
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			}
-		],
-		"name": "handlePackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			},
-			{
-				"internalType": "uint256",
-				"name": "relayFee",
-				"type": "uint256"
-			}
-		],
-		"name": "sendSynPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "updateParam",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	}
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      }
+    ],
+    "name": "addChannel",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint16",
+        "name": "chainId",
+        "type": "uint16"
+      },
+      {
+        "indexed": true,
+        "internalType": "uint64",
+        "name": "oracleSequence",
+        "type": "uint64"
+      },
+      {
+        "indexed": true,
+        "internalType": "uint64",
+        "name": "packageSequence",
+        "type": "uint64"
+      },
+      {
+        "indexed": true,
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "payload",
+        "type": "bytes"
+      }
+    ],
+    "name": "crossChainPackage",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "indexed": false,
+        "internalType": "bool",
+        "name": "isEnable",
+        "type": "bool"
+      }
+    ],
+    "name": "enableOrDisableChannel",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint8",
+        "name": "packageType",
+        "type": "uint8"
+      },
+      {
+        "indexed": true,
+        "internalType": "uint64",
+        "name": "packageSequence",
+        "type": "uint64"
+      },
+      {
+        "indexed": true,
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      }
+    ],
+    "name": "receivedPackage",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "lowLevelData",
+        "type": "bytes"
+      }
+    ],
+    "name": "unexpectedFailureAssertionInPackageHandler",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "reason",
+        "type": "string"
+      }
+    ],
+    "name": "unexpectedRevertInPackageHandler",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "uint64",
+        "name": "packageSequence",
+        "type": "uint64"
+      },
+      {
+        "indexed": true,
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "payload",
+        "type": "bytes"
+      }
+    ],
+    "name": "unsupportedPackage",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "ACK_PACKAGE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_KEY_PREFIX",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "FAIL_ACK_PACKAGE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_BATCH_SIZE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STORE_NAME",
+    "outputs": [
+      {
+        "internalType": "string",
+        "name": "",
+        "type": "string"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYN_PACKAGE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "batchSizeForOracle",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "name": "channelHandlerContractMap",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "name": "channelReceiveSequenceMap",
+    "outputs": [
+      {
+        "internalType": "uint64",
+        "name": "",
+        "type": "uint64"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "name": "channelSendSequenceMap",
+    "outputs": [
+      {
+        "internalType": "uint64",
+        "name": "",
+        "type": "uint64"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "name": "channelSyncedHeaderMap",
+    "outputs": [
+      {
+        "internalType": "uint64",
+        "name": "",
+        "type": "uint64"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "packageType",
+        "type": "uint8"
+      },
+      {
+        "internalType": "uint256",
+        "name": "relayFee",
+        "type": "uint256"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "encodePayload",
+    "outputs": [
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "pure",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "bytes",
+        "name": "payload",
+        "type": "bytes"
+      },
+      {
+        "internalType": "bytes",
+        "name": "proof",
+        "type": "bytes"
+      },
+      {
+        "internalType": "uint64",
+        "name": "height",
+        "type": "uint64"
+      },
+      {
+        "internalType": "uint64",
+        "name": "packageSequence",
+        "type": "uint64"
+      },
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      }
+    ],
+    "name": "handlePackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "init",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "name": "isRelayRewardFromSystemReward",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "oracleSequence",
+    "outputs": [
+      {
+        "internalType": "int64",
+        "name": "",
+        "type": "int64"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "previousTxHeight",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      },
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "name": "registeredContractChannelMap",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      },
+      {
+        "internalType": "uint256",
+        "name": "relayFee",
+        "type": "uint256"
+      }
+    ],
+    "name": "sendSynPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "txCounter",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  }
 ]
\ No newline at end of file
diff --git a/abi/govhub.abi b/abi/govhub.abi
index 981fd424..cbd6ff0a 100644
--- a/abi/govhub.abi
+++ b/abi/govhub.abi
@@ -1,458 +1,432 @@
 [
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "message",
-				"type": "bytes"
-			}
-		],
-		"name": "failReasonWithBytes",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "message",
-				"type": "string"
-			}
-		],
-		"name": "failReasonWithStr",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "paramChange",
-		"type": "event"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_TARGET_CONTRACT_FAIL",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_TARGET_NOT_CONTRACT",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "PARAM_UPDATE_MESSAGE_TYPE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleSynPackage",
-		"outputs": [
-			{
-				"internalType": "bytes",
-				"name": "responsePayload",
-				"type": "bytes"
-			}
-		],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"name": "handleAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"name": "handleFailAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	}
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "message",
+        "type": "bytes"
+      }
+    ],
+    "name": "failReasonWithBytes",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "message",
+        "type": "string"
+      }
+    ],
+    "name": "failReasonWithStr",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_TARGET_CONTRACT_FAIL",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_TARGET_NOT_CONTRACT",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "PARAM_UPDATE_MESSAGE_TYPE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleFailAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleSynPackage",
+    "outputs": [
+      {
+        "internalType": "bytes",
+        "name": "responsePayload",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  }
 ]
\ No newline at end of file
diff --git a/abi/relayerhub.abi b/abi/relayerhub.abi
index 719c4cc6..b712a5c7 100644
--- a/abi/relayerhub.abi
+++ b/abi/relayerhub.abi
@@ -1,475 +1,443 @@
 [
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "paramChange",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "_relayer",
-				"type": "address"
-			}
-		],
-		"name": "relayerRegister",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "_relayer",
-				"type": "address"
-			}
-		],
-		"name": "relayerUnRegister",
-		"type": "event"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INIT_DUES",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INIT_REQUIRED_DEPOSIT",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "dues",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "requiredDeposit",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "init",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "register",
-		"outputs": [],
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "unregister",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "updateParam",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "sender",
-				"type": "address"
-			}
-		],
-		"name": "isRelayer",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	}
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "_relayer",
+        "type": "address"
+      }
+    ],
+    "name": "relayerRegister",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "_relayer",
+        "type": "address"
+      }
+    ],
+    "name": "relayerUnRegister",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_DUES",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_REQUIRED_DEPOSIT",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "dues",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "init",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "sender",
+        "type": "address"
+      }
+    ],
+    "name": "isRelayer",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "register",
+    "outputs": [],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "requiredDeposit",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "unregister",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  }
 ]
\ No newline at end of file
diff --git a/abi/relayerincentivize.abi b/abi/relayerincentivize.abi
index b389ff6b..4cc97425 100644
--- a/abi/relayerincentivize.abi
+++ b/abi/relayerincentivize.abi
@@ -1,807 +1,755 @@
 [
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "sequence",
-				"type": "uint256"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "roundRewardForHeaderRelayer",
-				"type": "uint256"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "roundRewardForTransferRelayer",
-				"type": "uint256"
-			}
-		],
-		"name": "distributeCollectedReward",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "paramChange",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "relayer",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "rewardToRelayer",
-		"type": "event"
-	},
-	{
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "fallback"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CALLER_COMPENSATION_DENOMINATOR",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CALLER_COMPENSATION_MOLECULE",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "HEADER_RELAYER_REWARD_RATE_DENOMINATOR",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "HEADER_RELAYER_REWARD_RATE_MOLECULE",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAXIMUM_WEIGHT",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ROUND_SIZE",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "callerCompensationDenominator",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "callerCompensationMolecule",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "collectedRewardForHeaderRelayer",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "collectedRewardForTransferRelayer",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "countInRound",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"name": "headerRelayerAddressRecord",
-		"outputs": [
-			{
-				"internalType": "address payable",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "headerRelayerRewardRateDenominator",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "headerRelayerRewardRateMolecule",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"name": "headerRelayersSubmitCount",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"name": "packageRelayerAddressRecord",
-		"outputs": [
-			{
-				"internalType": "address payable",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"name": "packageRelayersSubmitCount",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"name": "relayerRewardVault",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "roundSequence",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "init",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address payable",
-				"name": "headerRelayerAddr",
-				"type": "address"
-			},
-			{
-				"internalType": "address payable",
-				"name": "packageRelayer",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			},
-			{
-				"internalType": "bool",
-				"name": "fromSystemReward",
-				"type": "bool"
-			}
-		],
-		"name": "addReward",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "relayerAddr",
-				"type": "address"
-			}
-		],
-		"name": "claimRelayerReward",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "count",
-				"type": "uint256"
-			}
-		],
-		"name": "calculateTransferRelayerWeight",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "pure",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "count",
-				"type": "uint256"
-			}
-		],
-		"name": "calculateHeaderRelayerWeight",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "pure",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "updateParam",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	}
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "sequence",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "roundRewardForHeaderRelayer",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "roundRewardForTransferRelayer",
+        "type": "uint256"
+      }
+    ],
+    "name": "distributeCollectedReward",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "relayer",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "rewardToRelayer",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CALLER_COMPENSATION_DENOMINATOR",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CALLER_COMPENSATION_MOLECULE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "HEADER_RELAYER_REWARD_RATE_DENOMINATOR",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "HEADER_RELAYER_REWARD_RATE_MOLECULE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAXIMUM_WEIGHT",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ROUND_SIZE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address payable",
+        "name": "headerRelayerAddr",
+        "type": "address"
+      },
+      {
+        "internalType": "address payable",
+        "name": "packageRelayer",
+        "type": "address"
+      },
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "internalType": "bool",
+        "name": "fromSystemReward",
+        "type": "bool"
+      }
+    ],
+    "name": "addReward",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "count",
+        "type": "uint256"
+      }
+    ],
+    "name": "calculateHeaderRelayerWeight",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "pure",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "count",
+        "type": "uint256"
+      }
+    ],
+    "name": "calculateTransferRelayerWeight",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "pure",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "callerCompensationDenominator",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "callerCompensationMolecule",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "relayerAddr",
+        "type": "address"
+      }
+    ],
+    "name": "claimRelayerReward",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "collectedRewardForHeaderRelayer",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "collectedRewardForTransferRelayer",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "countInRound",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "dynamicExtraIncentiveAmount",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "name": "headerRelayerAddressRecord",
+    "outputs": [
+      {
+        "internalType": "address payable",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "headerRelayerRewardRateDenominator",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "headerRelayerRewardRateMolecule",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "headerRelayersSubmitCount",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "init",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "name": "packageRelayerAddressRecord",
+    "outputs": [
+      {
+        "internalType": "address payable",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "packageRelayersSubmitCount",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "relayerRewardVault",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "roundSequence",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "stateMutability": "payable",
+    "type": "receive"
+  }
 ]
\ No newline at end of file
diff --git a/abi/slashindicator.abi b/abi/slashindicator.abi
index 60eb3d90..99a044f5 100644
--- a/abi/slashindicator.abi
+++ b/abi/slashindicator.abi
@@ -1,674 +1,767 @@
 [
-	{
-		"anonymous": false,
-		"inputs": [],
-		"name": "crashResponse",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [],
-		"name": "indicatorCleaned",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint32",
-				"name": "code",
-				"type": "uint32"
-			}
-		],
-		"name": "knownResponse",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "paramChange",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint32",
-				"name": "code",
-				"type": "uint32"
-			}
-		],
-		"name": "unKnownResponse",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			}
-		],
-		"name": "validatorSlashed",
-		"type": "event"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BSC_RELAYER_REWARD",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "DECREASE_RATE",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "FELONY_THRESHOLD",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MISDEMEANOR_THRESHOLD",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "felonyThreshold",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"name": "indicators",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "height",
-				"type": "uint256"
-			},
-			{
-				"internalType": "uint256",
-				"name": "count",
-				"type": "uint256"
-			},
-			{
-				"internalType": "bool",
-				"name": "exist",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "misdemeanorThreshold",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "previousHeight",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"name": "validators",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "init",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"name": "handleSynPackage",
-		"outputs": [
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"name": "handleFailAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			}
-		],
-		"name": "slash",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "clean",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "updateParam",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "validator",
-				"type": "address"
-			}
-		],
-		"name": "getSlashIndicator",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			},
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	}
+  {
+    "anonymous": false,
+    "inputs": [],
+    "name": "crashResponse",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [],
+    "name": "indicatorCleaned",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint32",
+        "name": "code",
+        "type": "uint32"
+      }
+    ],
+    "name": "knownResponse",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint32",
+        "name": "code",
+        "type": "uint32"
+      }
+    ],
+    "name": "unKnownResponse",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "validatorSlashed",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BSC_RELAYER_REWARD",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "DECREASE_RATE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "FELONY_THRESHOLD",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_FINALITY_SLASH_REWARD_RATIO",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MISDEMEANOR_THRESHOLD",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "clean",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "felonyThreshold",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "finalitySlashRewardRatio",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "getSlashIndicator",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "getSlashThresholds",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleFailAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleSynPackage",
+    "outputs": [
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "indicators",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "height",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "count",
+        "type": "uint256"
+      },
+      {
+        "internalType": "bool",
+        "name": "exist",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "init",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "misdemeanorThreshold",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "previousHeight",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "sendFelonyPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "slash",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "components": [
+          {
+            "components": [
+              {
+                "internalType": "uint256",
+                "name": "srcNum",
+                "type": "uint256"
+              },
+              {
+                "internalType": "bytes32",
+                "name": "srcHash",
+                "type": "bytes32"
+              },
+              {
+                "internalType": "uint256",
+                "name": "tarNum",
+                "type": "uint256"
+              },
+              {
+                "internalType": "bytes32",
+                "name": "tarHash",
+                "type": "bytes32"
+              },
+              {
+                "internalType": "bytes",
+                "name": "sig",
+                "type": "bytes"
+              }
+            ],
+            "internalType": "struct SlashIndicator.VoteData",
+            "name": "voteA",
+            "type": "tuple"
+          },
+          {
+            "components": [
+              {
+                "internalType": "uint256",
+                "name": "srcNum",
+                "type": "uint256"
+              },
+              {
+                "internalType": "bytes32",
+                "name": "srcHash",
+                "type": "bytes32"
+              },
+              {
+                "internalType": "uint256",
+                "name": "tarNum",
+                "type": "uint256"
+              },
+              {
+                "internalType": "bytes32",
+                "name": "tarHash",
+                "type": "bytes32"
+              },
+              {
+                "internalType": "bytes",
+                "name": "sig",
+                "type": "bytes"
+              }
+            ],
+            "internalType": "struct SlashIndicator.VoteData",
+            "name": "voteB",
+            "type": "tuple"
+          },
+          {
+            "internalType": "bytes",
+            "name": "voteAddr",
+            "type": "bytes"
+          }
+        ],
+        "internalType": "struct SlashIndicator.FinalityEvidence",
+        "name": "_evidence",
+        "type": "tuple"
+      }
+    ],
+    "name": "submitFinalityViolationEvidence",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "name": "validators",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  }
 ]
\ No newline at end of file
diff --git a/abi/staking.abi b/abi/staking.abi
new file mode 100644
index 00000000..495bd05b
--- /dev/null
+++ b/abi/staking.abi
@@ -0,0 +1,1280 @@
+[
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "uint8",
+        "name": "eventType",
+        "type": "uint8"
+      }
+    ],
+    "name": "crashResponse",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint8",
+        "name": "errCode",
+        "type": "uint8"
+      }
+    ],
+    "name": "delegateFailed",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "relayerFee",
+        "type": "uint256"
+      }
+    ],
+    "name": "delegateSubmitted",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "delegateSuccess",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "uint8",
+        "name": "eventType",
+        "type": "uint8"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "errCode",
+        "type": "uint256"
+      }
+    ],
+    "name": "failedSynPackage",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "valSrc",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "valDst",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint8",
+        "name": "errCode",
+        "type": "uint8"
+      }
+    ],
+    "name": "redelegateFailed",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validatorSrc",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validatorDst",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "relayerFee",
+        "type": "uint256"
+      }
+    ],
+    "name": "redelegateSubmitted",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "valSrc",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "valDst",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "redelegateSuccess",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "rewardClaimed",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "rewardReceived",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint8",
+        "name": "errCode",
+        "type": "uint8"
+      }
+    ],
+    "name": "undelegateFailed",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "relayerFee",
+        "type": "uint256"
+      }
+    ],
+    "name": "undelegateSubmitted",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "undelegateSuccess",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "undelegatedClaimed",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "undelegatedReceived",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_FAILED",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_SUCCESS",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_WITHDRAW_BNB",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "EVENT_DELEGATE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "EVENT_DISTRIBUTE_REWARD",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "EVENT_DISTRIBUTE_UNDELEGATED",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "EVENT_REDELEGATE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "EVENT_UNDELEGATE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_BSC_RELAYER_FEE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_MIN_DELEGATION",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_RELAYER_FEE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_TRANSFER_GAS",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LOCK_TIME",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TEN_DECIMALS",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bSCRelayerFee",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "claimReward",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "claimUndelegated",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "delegate",
+    "outputs": [],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "getDelegated",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      }
+    ],
+    "name": "getDistributedReward",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "getMinDelegation",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "internalType": "address",
+        "name": "valSrc",
+        "type": "address"
+      },
+      {
+        "internalType": "address",
+        "name": "valDst",
+        "type": "address"
+      }
+    ],
+    "name": "getPendingRedelegateTime",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      },
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      }
+    ],
+    "name": "getPendingUndelegateTime",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "getRelayerFee",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      }
+    ],
+    "name": "getRequestInFly",
+    "outputs": [
+      {
+        "internalType": "uint256[3]",
+        "name": "",
+        "type": "uint256[3]"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      }
+    ],
+    "name": "getTotalDelegated",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "delegator",
+        "type": "address"
+      }
+    ],
+    "name": "getUndelegated",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleFailAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleSynPackage",
+    "outputs": [
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "minDelegation",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validatorSrc",
+        "type": "address"
+      },
+      {
+        "internalType": "address",
+        "name": "validatorDst",
+        "type": "address"
+      },
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "redelegate",
+    "outputs": [],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "relayerFee",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "transferGas",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "validator",
+        "type": "address"
+      },
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "undelegate",
+    "outputs": [],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "stateMutability": "payable",
+    "type": "receive"
+  }
+]
\ No newline at end of file
diff --git a/abi/systemreward.abi b/abi/systemreward.abi
index aca3233f..43865ac3 100644
--- a/abi/systemreward.abi
+++ b/abi/systemreward.abi
@@ -1,428 +1,455 @@
 [
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "from",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "receiveDeposit",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [],
-		"name": "rewardEmpty",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "to",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "rewardTo",
-		"type": "event"
-	},
-	{
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "fallback"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAX_REWARDS",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "numOperator",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address payable",
-				"name": "to",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "claimRewards",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "addr",
-				"type": "address"
-			}
-		],
-		"name": "isOperator",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	}
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "from",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "receiveDeposit",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [],
+    "name": "rewardEmpty",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "to",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "rewardTo",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "operator",
+        "type": "address"
+      }
+    ],
+    "name": "updateOperator",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAX_REWARDS",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address payable",
+        "name": "to",
+        "type": "address"
+      },
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "claimRewards",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "addr",
+        "type": "address"
+      }
+    ],
+    "name": "isOperator",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "numOperator",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "stateMutability": "payable",
+    "type": "receive"
+  }
 ]
\ No newline at end of file
diff --git a/abi/tendermintlightclient.abi b/abi/tendermintlightclient.abi
index 8ed2dc61..93dc47fc 100644
--- a/abi/tendermintlightclient.abi
+++ b/abi/tendermintlightclient.abi
@@ -1,657 +1,586 @@
 [
-	{
-		"inputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "constructor"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint64",
-				"name": "initHeight",
-				"type": "uint64"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes32",
-				"name": "appHash",
-				"type": "bytes32"
-			}
-		],
-		"name": "initConsensusState",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "paramChange",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint64",
-				"name": "height",
-				"type": "uint64"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint64",
-				"name": "preValidatorSetChangeHeight",
-				"type": "uint64"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes32",
-				"name": "appHash",
-				"type": "bytes32"
-			},
-			{
-				"indexed": false,
-				"internalType": "bool",
-				"name": "validatorChanged",
-				"type": "bool"
-			}
-		],
-		"name": "syncConsensusState",
-		"type": "event"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INIT_CONSENSUS_STATE_BYTES",
-		"outputs": [
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INIT_REWARD_FOR_VALIDATOR_SER_CHANGE",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "chainID",
-		"outputs": [
-			{
-				"internalType": "bytes32",
-				"name": "",
-				"type": "bytes32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "initialHeight",
-		"outputs": [
-			{
-				"internalType": "uint64",
-				"name": "",
-				"type": "uint64"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "latestHeight",
-		"outputs": [
-			{
-				"internalType": "uint64",
-				"name": "",
-				"type": "uint64"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint64",
-				"name": "",
-				"type": "uint64"
-			}
-		],
-		"name": "lightClientConsensusStates",
-		"outputs": [
-			{
-				"internalType": "uint64",
-				"name": "preValidatorSetChangeHeight",
-				"type": "uint64"
-			},
-			{
-				"internalType": "bytes32",
-				"name": "appHash",
-				"type": "bytes32"
-			},
-			{
-				"internalType": "bytes32",
-				"name": "curValidatorSetHash",
-				"type": "bytes32"
-			},
-			{
-				"internalType": "bytes",
-				"name": "nextValidatorSet",
-				"type": "bytes"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "rewardForValidatorSetChange",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint64",
-				"name": "",
-				"type": "uint64"
-			}
-		],
-		"name": "submitters",
-		"outputs": [
-			{
-				"internalType": "address payable",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "init",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "bytes",
-				"name": "header",
-				"type": "bytes"
-			},
-			{
-				"internalType": "uint64",
-				"name": "height",
-				"type": "uint64"
-			}
-		],
-		"name": "syncTendermintHeader",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint64",
-				"name": "height",
-				"type": "uint64"
-			}
-		],
-		"name": "isHeaderSynced",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint64",
-				"name": "height",
-				"type": "uint64"
-			}
-		],
-		"name": "getAppHash",
-		"outputs": [
-			{
-				"internalType": "bytes32",
-				"name": "",
-				"type": "bytes32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "uint64",
-				"name": "height",
-				"type": "uint64"
-			}
-		],
-		"name": "getSubmitter",
-		"outputs": [
-			{
-				"internalType": "address payable",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "getChainID",
-		"outputs": [
-			{
-				"internalType": "string",
-				"name": "",
-				"type": "string"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "updateParam",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	}
+  {
+    "inputs": [],
+    "stateMutability": "nonpayable",
+    "type": "constructor"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint64",
+        "name": "initHeight",
+        "type": "uint64"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes32",
+        "name": "appHash",
+        "type": "bytes32"
+      }
+    ],
+    "name": "initConsensusState",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint64",
+        "name": "height",
+        "type": "uint64"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint64",
+        "name": "preValidatorSetChangeHeight",
+        "type": "uint64"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes32",
+        "name": "appHash",
+        "type": "bytes32"
+      },
+      {
+        "indexed": false,
+        "internalType": "bool",
+        "name": "validatorChanged",
+        "type": "bool"
+      }
+    ],
+    "name": "syncConsensusState",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_CONSENSUS_STATE_BYTES",
+    "outputs": [
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_REWARD_FOR_VALIDATOR_SER_CHANGE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "chainID",
+    "outputs": [
+      {
+        "internalType": "bytes32",
+        "name": "",
+        "type": "bytes32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "initialHeight",
+    "outputs": [
+      {
+        "internalType": "uint64",
+        "name": "",
+        "type": "uint64"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "latestHeight",
+    "outputs": [
+      {
+        "internalType": "uint64",
+        "name": "",
+        "type": "uint64"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint64",
+        "name": "",
+        "type": "uint64"
+      }
+    ],
+    "name": "lightClientConsensusStates",
+    "outputs": [
+      {
+        "internalType": "uint64",
+        "name": "preValidatorSetChangeHeight",
+        "type": "uint64"
+      },
+      {
+        "internalType": "bytes32",
+        "name": "appHash",
+        "type": "bytes32"
+      },
+      {
+        "internalType": "bytes32",
+        "name": "curValidatorSetHash",
+        "type": "bytes32"
+      },
+      {
+        "internalType": "bytes",
+        "name": "nextValidatorSet",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "rewardForValidatorSetChange",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint64",
+        "name": "",
+        "type": "uint64"
+      }
+    ],
+    "name": "submitters",
+    "outputs": [
+      {
+        "internalType": "address payable",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "init",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "bytes",
+        "name": "header",
+        "type": "bytes"
+      },
+      {
+        "internalType": "uint64",
+        "name": "height",
+        "type": "uint64"
+      }
+    ],
+    "name": "syncTendermintHeader",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint64",
+        "name": "height",
+        "type": "uint64"
+      }
+    ],
+    "name": "isHeaderSynced",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint64",
+        "name": "height",
+        "type": "uint64"
+      }
+    ],
+    "name": "getAppHash",
+    "outputs": [
+      {
+        "internalType": "bytes32",
+        "name": "",
+        "type": "bytes32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint64",
+        "name": "height",
+        "type": "uint64"
+      }
+    ],
+    "name": "getSubmitter",
+    "outputs": [
+      {
+        "internalType": "address payable",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "getChainID",
+    "outputs": [
+      {
+        "internalType": "string",
+        "name": "",
+        "type": "string"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  }
 ]
\ No newline at end of file
diff --git a/abi/tokenhub.abi b/abi/tokenhub.abi
index b6fd77de..f4f8e88e 100644
--- a/abi/tokenhub.abi
+++ b/abi/tokenhub.abi
@@ -1,1120 +1,1057 @@
 [
-	{
-		"inputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "constructor"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "paramChange",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "from",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "receiveDeposit",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "refundAddr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint32",
-				"name": "status",
-				"type": "uint32"
-			}
-		],
-		"name": "refundFailure",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "refundAddr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint32",
-				"name": "status",
-				"type": "uint32"
-			}
-		],
-		"name": "refundSuccess",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "to",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "rewardTo",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "refundAddr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "transferInSuccess",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "address",
-				"name": "senderAddr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "relayFee",
-				"type": "uint256"
-			}
-		],
-		"name": "transferOutSuccess",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "unexpectedPackage",
-		"type": "event"
-	},
-	{
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "fallback"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BEP2_TOKEN_DECIMALS",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BEP2_TOKEN_SYMBOL_FOR_BNB",
-		"outputs": [
-			{
-				"internalType": "bytes32",
-				"name": "",
-				"type": "bytes32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INIT_MINIMUM_RELAY_FEE",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAXIMUM_BEP20_SYMBOL_LEN",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAX_BEP2_TOTAL_SUPPLY",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAX_GAS_FOR_CALLING_BEP20",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAX_GAS_FOR_TRANSFER_BNB",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MINIMUM_BEP20_SYMBOL_LEN",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "REWARD_UPPER_LIMIT",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TEN_DECIMALS",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_FAILURE_INSUFFICIENT_BALANCE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_FAILURE_NON_PAYABLE_RECIPIENT",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_FAILURE_TIMEOUT",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_FAILURE_UNBOUND_TOKEN",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_FAILURE_UNKNOWN",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_SUCCESS",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"name": "bep20ContractDecimals",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "relayFee",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [],
-		"name": "init",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address payable",
-				"name": "to",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			}
-		],
-		"name": "claimRewards",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "getMiniRelayFee",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleSynPackage",
-		"outputs": [
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleFailAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			},
-			{
-				"internalType": "address",
-				"name": "recipient",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "amount",
-				"type": "uint256"
-			},
-			{
-				"internalType": "uint64",
-				"name": "expireTime",
-				"type": "uint64"
-			}
-		],
-		"name": "transferOut",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address[]",
-				"name": "recipientAddrs",
-				"type": "address[]"
-			},
-			{
-				"internalType": "uint256[]",
-				"name": "amounts",
-				"type": "uint256[]"
-			},
-			{
-				"internalType": "address[]",
-				"name": "refundAddrs",
-				"type": "address[]"
-			},
-			{
-				"internalType": "uint64",
-				"name": "expireTime",
-				"type": "uint64"
-			}
-		],
-		"name": "batchTransferOutBNB",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "updateParam",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "bytes32",
-				"name": "bep2Symbol",
-				"type": "bytes32"
-			}
-		],
-		"name": "getContractAddrByBEP2Symbol",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			}
-		],
-		"name": "getBep2SymbolByContractAddr",
-		"outputs": [
-			{
-				"internalType": "bytes32",
-				"name": "",
-				"type": "bytes32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "bytes32",
-				"name": "bep2Symbol",
-				"type": "bytes32"
-			},
-			{
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "decimals",
-				"type": "uint256"
-			}
-		],
-		"name": "bindToken",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "bytes32",
-				"name": "bep2Symbol",
-				"type": "bytes32"
-			},
-			{
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			}
-		],
-		"name": "unbindToken",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "bep2Symbol",
-				"type": "string"
-			}
-		],
-		"name": "getBoundContract",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			}
-		],
-		"name": "getBoundBep2Symbol",
-		"outputs": [
-			{
-				"internalType": "string",
-				"name": "",
-				"type": "string"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	}
+  {
+    "inputs": [],
+    "stateMutability": "nonpayable",
+    "type": "constructor"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "from",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "receiveDeposit",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "refundAddr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint32",
+        "name": "status",
+        "type": "uint32"
+      }
+    ],
+    "name": "refundFailure",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "refundAddr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint32",
+        "name": "status",
+        "type": "uint32"
+      }
+    ],
+    "name": "refundSuccess",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "to",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "rewardTo",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "refundAddr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "transferInSuccess",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "address",
+        "name": "senderAddr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "relayFee",
+        "type": "uint256"
+      }
+    ],
+    "name": "transferOutSuccess",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "unexpectedPackage",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BEP2_TOKEN_DECIMALS",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BEP2_TOKEN_SYMBOL_FOR_BNB",
+    "outputs": [
+      {
+        "internalType": "bytes32",
+        "name": "",
+        "type": "bytes32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INIT_MINIMUM_RELAY_FEE",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAXIMUM_BEP20_SYMBOL_LEN",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAX_BEP2_TOTAL_SUPPLY",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAX_GAS_FOR_CALLING_BEP20",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAX_GAS_FOR_TRANSFER_BNB",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MINIMUM_BEP20_SYMBOL_LEN",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "REWARD_UPPER_LIMIT",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TEN_DECIMALS",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_FAILURE_INSUFFICIENT_BALANCE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_FAILURE_NON_PAYABLE_RECIPIENT",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_FAILURE_TIMEOUT",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_FAILURE_UNBOUND_TOKEN",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_FAILURE_UNKNOWN",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_SUCCESS",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address[]",
+        "name": "recipientAddrs",
+        "type": "address[]"
+      },
+      {
+        "internalType": "uint256[]",
+        "name": "amounts",
+        "type": "uint256[]"
+      },
+      {
+        "internalType": "address[]",
+        "name": "refundAddrs",
+        "type": "address[]"
+      },
+      {
+        "internalType": "uint64",
+        "name": "expireTime",
+        "type": "uint64"
+      }
+    ],
+    "name": "batchTransferOutBNB",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "bep20ContractDecimals",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "bytes32",
+        "name": "bep2Symbol",
+        "type": "bytes32"
+      },
+      {
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      },
+      {
+        "internalType": "uint256",
+        "name": "decimals",
+        "type": "uint256"
+      }
+    ],
+    "name": "bindToken",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address payable",
+        "name": "to",
+        "type": "address"
+      },
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "claimRewards",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      }
+    ],
+    "name": "getBep2SymbolByContractAddr",
+    "outputs": [
+      {
+        "internalType": "bytes32",
+        "name": "",
+        "type": "bytes32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      }
+    ],
+    "name": "getBoundBep2Symbol",
+    "outputs": [
+      {
+        "internalType": "string",
+        "name": "",
+        "type": "string"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "bep2Symbol",
+        "type": "string"
+      }
+    ],
+    "name": "getBoundContract",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "bytes32",
+        "name": "bep2Symbol",
+        "type": "bytes32"
+      }
+    ],
+    "name": "getContractAddrByBEP2Symbol",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "getMiniRelayFee",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleFailAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleSynPackage",
+    "outputs": [
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "init",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "relayFee",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      },
+      {
+        "internalType": "address",
+        "name": "recipient",
+        "type": "address"
+      },
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint64",
+        "name": "expireTime",
+        "type": "uint64"
+      }
+    ],
+    "name": "transferOut",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "bytes32",
+        "name": "bep2Symbol",
+        "type": "bytes32"
+      },
+      {
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      }
+    ],
+    "name": "unbindToken",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "amount",
+        "type": "uint256"
+      }
+    ],
+    "name": "withdrawStakingBNB",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "stateMutability": "payable",
+    "type": "receive"
+  }
 ]
\ No newline at end of file
diff --git a/abi/tokenmanager.abi b/abi/tokenmanager.abi
index 1d03235b..11d7ea2a 100644
--- a/abi/tokenmanager.abi
+++ b/abi/tokenmanager.abi
@@ -1,1202 +1,1081 @@
 [
-	{
-		"inputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "constructor"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "bep2Symbol",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint32",
-				"name": "failedReason",
-				"type": "uint32"
-			}
-		],
-		"name": "bindFailure",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "bep2Symbol",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "totalSupply",
-				"type": "uint256"
-			},
-			{
-				"indexed": false,
-				"internalType": "uint256",
-				"name": "peggyAmount",
-				"type": "uint256"
-			}
-		],
-		"name": "bindSuccess",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "reason",
-				"type": "string"
-			}
-		],
-		"name": "mirrorFailure",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes32",
-				"name": "bep2Symbol",
-				"type": "bytes32"
-			}
-		],
-		"name": "mirrorSuccess",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "paramChange",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "string",
-				"name": "reason",
-				"type": "string"
-			}
-		],
-		"name": "syncFailure",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			}
-		],
-		"name": "syncSuccess",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": false,
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"indexed": false,
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "unexpectedPackage",
-		"type": "event"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BEP2_TOKEN_DECIMALS",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_PACKAGE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_STATUS_ALREADY_BOUND_TOKEN",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_STATUS_DECIMALS_MISMATCH",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_STATUS_REJECTED",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_STATUS_SUCCESS",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_STATUS_SYMBOL_MISMATCH",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_STATUS_TIMEOUT",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_STATUS_TOO_MUCH_TOKENHUB_BALANCE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "BIND_STATUS_TOTAL_SUPPLY_MISMATCH",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CODE_OK",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "CROSS_CHAIN_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "ERROR_FAIL_DECODE",
-		"outputs": [
-			{
-				"internalType": "uint32",
-				"name": "",
-				"type": "uint32"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "GOV_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "INCENTIVIZE_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "LIGHT_CLIENT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAXIMUM_BEP20_SYMBOL_LEN",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAX_BEP2_TOTAL_SUPPLY",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MAX_GAS_FOR_TRANSFER_BNB",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MINIMUM_BEP20_SYMBOL_LEN",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MIRROR_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MIRROR_STATUS_ALREADY_BOUND",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MIRROR_STATUS_DUPLICATED_BEP2_SYMBOL",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MIRROR_STATUS_SUCCESS",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "MIRROR_STATUS_TIMEOUT",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "RELAYERHUB_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SLASH_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "STAKING_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYNC_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYNC_STATUS_NOT_BOUND_MIRROR",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYNC_STATUS_SUCCESS",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYNC_STATUS_TIMEOUT",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "SYSTEM_REWARD_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TEN_DECIMALS",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_HUB_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TOKEN_MANAGER_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_IN_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "TRANSFER_OUT_CHANNELID",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "UNBIND_PACKAGE",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "",
-				"type": "uint8"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "VALIDATOR_CONTRACT_ADDR",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "alreadyInit",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			},
-			{
-				"internalType": "string",
-				"name": "bep2Symbol",
-				"type": "string"
-			}
-		],
-		"name": "approveBind",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "bytes32",
-				"name": "",
-				"type": "bytes32"
-			}
-		],
-		"name": "bindPackageRecord",
-		"outputs": [
-			{
-				"internalType": "uint8",
-				"name": "packageType",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes32",
-				"name": "bep2TokenSymbol",
-				"type": "bytes32"
-			},
-			{
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "totalSupply",
-				"type": "uint256"
-			},
-			{
-				"internalType": "uint256",
-				"name": "peggyAmount",
-				"type": "uint256"
-			},
-			{
-				"internalType": "uint8",
-				"name": "bep20Decimals",
-				"type": "uint8"
-			},
-			{
-				"internalType": "uint64",
-				"name": "expireTime",
-				"type": "uint64"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"name": "boundByMirror",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "bscChainID",
-		"outputs": [
-			{
-				"internalType": "uint16",
-				"name": "",
-				"type": "uint16"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "bep2Symbol",
-				"type": "string"
-			}
-		],
-		"name": "expireBind",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleFailAckPackage",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "uint8",
-				"name": "channelId",
-				"type": "uint8"
-			},
-			{
-				"internalType": "bytes",
-				"name": "msgBytes",
-				"type": "bytes"
-			}
-		],
-		"name": "handleSynPackage",
-		"outputs": [
-			{
-				"internalType": "bytes",
-				"name": "",
-				"type": "bytes"
-			}
-		],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			},
-			{
-				"internalType": "uint64",
-				"name": "expireTime",
-				"type": "uint64"
-			}
-		],
-		"name": "mirror",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "mirrorFee",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"name": "mirrorPendingRecord",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "symbol",
-				"type": "string"
-			}
-		],
-		"name": "queryRequiredLockAmountForBind",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "contractAddr",
-				"type": "address"
-			},
-			{
-				"internalType": "string",
-				"name": "bep2Symbol",
-				"type": "string"
-			}
-		],
-		"name": "rejectBind",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "bep20Addr",
-				"type": "address"
-			},
-			{
-				"internalType": "uint64",
-				"name": "expireTime",
-				"type": "uint64"
-			}
-		],
-		"name": "sync",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"payable": true,
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"constant": true,
-		"inputs": [],
-		"name": "syncFee",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"payable": false,
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"constant": false,
-		"inputs": [
-			{
-				"internalType": "string",
-				"name": "key",
-				"type": "string"
-			},
-			{
-				"internalType": "bytes",
-				"name": "value",
-				"type": "bytes"
-			}
-		],
-		"name": "updateParam",
-		"outputs": [],
-		"payable": false,
-		"stateMutability": "nonpayable",
-		"type": "function"
-	}
+  {
+    "inputs": [],
+    "stateMutability": "nonpayable",
+    "type": "constructor"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "bep2Symbol",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint32",
+        "name": "failedReason",
+        "type": "uint32"
+      }
+    ],
+    "name": "bindFailure",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "bep2Symbol",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "totalSupply",
+        "type": "uint256"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "peggyAmount",
+        "type": "uint256"
+      }
+    ],
+    "name": "bindSuccess",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint8",
+        "name": "errCode",
+        "type": "uint8"
+      }
+    ],
+    "name": "mirrorFailure",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes32",
+        "name": "bep2Symbol",
+        "type": "bytes32"
+      }
+    ],
+    "name": "mirrorSuccess",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "paramChange",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint8",
+        "name": "errCode",
+        "type": "uint8"
+      }
+    ],
+    "name": "syncFailure",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      }
+    ],
+    "name": "syncSuccess",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "indexed": false,
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "unexpectedPackage",
+    "type": "event"
+  },
+  {
+    "inputs": [],
+    "name": "BEP2_TOKEN_DECIMALS",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_PACKAGE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_STATUS_ALREADY_BOUND_TOKEN",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_STATUS_DECIMALS_MISMATCH",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_STATUS_REJECTED",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_STATUS_SYMBOL_MISMATCH",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_STATUS_TIMEOUT",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_STATUS_TOO_MUCH_TOKENHUB_BALANCE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "BIND_STATUS_TOTAL_SUPPLY_MISMATCH",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CODE_OK",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_CHAIN_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "CROSS_STAKE_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "ERROR_FAIL_DECODE",
+    "outputs": [
+      {
+        "internalType": "uint32",
+        "name": "",
+        "type": "uint32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "GOV_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "INCENTIVIZE_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LIGHT_CLIENT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "LOG_MAX_UINT256",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAXIMUM_BEP20_SYMBOL_LEN",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAX_BEP2_TOTAL_SUPPLY",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MAX_GAS_FOR_TRANSFER_BNB",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MINIMUM_BEP20_SYMBOL_LEN",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MIRROR_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MIRROR_STATUS_ALREADY_BOUND",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MIRROR_STATUS_DUPLICATED_BEP2_SYMBOL",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "MIRROR_STATUS_TIMEOUT",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "RELAYERHUB_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SLASH_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "STAKING_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYNC_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYNC_STATUS_NOT_BOUND_MIRROR",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYNC_STATUS_TIMEOUT",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "SYSTEM_REWARD_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TEN_DECIMALS",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_HUB_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TOKEN_MANAGER_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_IN_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "TRANSFER_OUT_CHANNELID",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "UNBIND_PACKAGE",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "VALIDATOR_CONTRACT_ADDR",
+    "outputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "alreadyInit",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      },
+      {
+        "internalType": "string",
+        "name": "bep2Symbol",
+        "type": "string"
+      }
+    ],
+    "name": "approveBind",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "bytes32",
+        "name": "",
+        "type": "bytes32"
+      }
+    ],
+    "name": "bindPackageRecord",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "packageType",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes32",
+        "name": "bep2TokenSymbol",
+        "type": "bytes32"
+      },
+      {
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      },
+      {
+        "internalType": "uint256",
+        "name": "totalSupply",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "peggyAmount",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint8",
+        "name": "bep20Decimals",
+        "type": "uint8"
+      },
+      {
+        "internalType": "uint64",
+        "name": "expireTime",
+        "type": "uint64"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "boundByMirror",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "bscChainID",
+    "outputs": [
+      {
+        "internalType": "uint16",
+        "name": "",
+        "type": "uint16"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "bep2Symbol",
+        "type": "string"
+      }
+    ],
+    "name": "expireBind",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleFailAckPackage",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "channelId",
+        "type": "uint8"
+      },
+      {
+        "internalType": "bytes",
+        "name": "msgBytes",
+        "type": "bytes"
+      }
+    ],
+    "name": "handleSynPackage",
+    "outputs": [
+      {
+        "internalType": "bytes",
+        "name": "",
+        "type": "bytes"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      },
+      {
+        "internalType": "uint64",
+        "name": "expireTime",
+        "type": "uint64"
+      }
+    ],
+    "name": "mirror",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "mirrorFee",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "mirrorPendingRecord",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "symbol",
+        "type": "string"
+      }
+    ],
+    "name": "queryRequiredLockAmountForBind",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "contractAddr",
+        "type": "address"
+      },
+      {
+        "internalType": "string",
+        "name": "bep2Symbol",
+        "type": "string"
+      }
+    ],
+    "name": "rejectBind",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "address",
+        "name": "bep20Addr",
+        "type": "address"
+      },
+      {
+        "internalType": "uint64",
+        "name": "expireTime",
+        "type": "uint64"
+      }
+    ],
+    "name": "sync",
+    "outputs": [
+      {
+        "internalType": "bool",
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "syncFee",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "string",
+        "name": "key",
+        "type": "string"
+      },
+      {
+        "internalType": "bytes",
+        "name": "value",
+        "type": "bytes"
+      }
+    ],
+    "name": "updateParam",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  }
 ]
\ No newline at end of file
diff --git a/contracts/BSCValidatorSet.sol b/contracts/BSCValidatorSet.sol
index a1ca3c17..11cc15ad 100644
--- a/contracts/BSCValidatorSet.sol
+++ b/contracts/BSCValidatorSet.sol
@@ -1,4 +1,5 @@
 pragma solidity 0.6.4;
+pragma experimental ABIEncoderV2;
 
 import "./System.sol";
 import "./lib/BytesToTypes.sol";
@@ -32,13 +33,15 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
   uint256 public constant EXPIRE_TIME_SECOND_GAP = 1000;
   uint256 public constant MAX_NUM_OF_VALIDATORS = 41;
 
-  bytes public constant INIT_VALIDATORSET_BYTES = hex"f84580f842f840949fb29aac15b9a4b7f17c3385939b007540f4d791949fb29aac15b9a4b7f17c3385939b007540f4d791949fb29aac15b9a4b7f17c3385939b007540f4d79164";
+  bytes public constant INIT_VALIDATORSET_BYTES = hex"f87680f873f871949fb29aac15b9a4b7f17c3385939b007540f4d791949fb29aac15b9a4b7f17c3385939b007540f4d791949fb29aac15b9a4b7f17c3385939b007540f4d79164b085e6972fc98cd3c81d64d40e325acfed44365b97a7567a27939c14dbc7512ddcf54cb1284eb637cfa308ae4e00cb5588";
 
   uint32 public constant ERROR_UNKNOWN_PACKAGE_TYPE = 101;
   uint32 public constant ERROR_FAIL_CHECK_VALIDATORS = 102;
   uint32 public constant ERROR_LEN_OF_VAL_MISMATCH = 103;
   uint32 public constant ERROR_RELAYFEE_TOO_LARGE = 104;
 
+  uint256 public constant INIT_NUM_OF_CABINETS = 21;
+  uint256 public constant EPOCH = 200;
 
   /*********************** state of the contract **************************/
   Validator[] public currentValidatorSet;
@@ -56,7 +59,29 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
   uint256 public burnRatio;
   bool public burnRatioInitialized;
 
-  struct Validator{
+  // BEP-127 Temporary Maintenance
+  uint256 public constant INIT_MAX_NUM_OF_MAINTAINING = 3;
+  uint256 public constant INIT_MAINTAIN_SLASH_SCALE = 2;
+
+  uint256 public maxNumOfMaintaining;
+  uint256 public numOfMaintaining;
+  uint256 public maintainSlashScale;
+
+  // Corresponds strictly to currentValidatorSet
+  // validatorExtraSet[index] = the `ValidatorExtra` info of currentValidatorSet[index]
+  ValidatorExtra[] public validatorExtraSet;
+  // BEP-131 candidate validator
+  uint256 public numOfCabinets;
+  uint256 public maxNumOfCandidates;
+  uint256 public maxNumOfWorkingCandidates;
+
+  // BEP-126 Fast Finality
+  uint256 public constant INIT_FINALITY_REWARD_RATIO = 10;
+
+  uint256 public finalityRewardRatio;
+  uint256 public previousHeight;
+
+  struct Validator {
     address consensusAddress;
     address payable feeAddress;
     address BBCFeeAddress;
@@ -67,10 +92,23 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     uint256 incoming;
   }
 
+  struct ValidatorExtra {
+    // BEP-127 Temporary Maintenance
+    uint256 enterMaintenanceHeight;     // the height from where the validator enters Maintenance
+    bool isMaintaining;
+
+    // BEP-126 Fast Finality
+    bytes voteAddress;
+
+    // reserve for future use
+    uint256[19] slots;
+  }
+
   /*********************** cross chain package **************************/
   struct IbcValidatorSetPackage {
     uint8  packageType;
     Validator[] validatorSet;
+    bytes[] voteAddrs;
   }
 
   /*********************** modifiers **************************/
@@ -79,6 +117,25 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     _;
   }
 
+  modifier initValidatorExtraSet() {
+    if (validatorExtraSet.length == 0) {
+      ValidatorExtra memory validatorExtra;
+      // init validatorExtraSet
+      uint256 validatorsNum = currentValidatorSet.length;
+      for (uint i; i < validatorsNum; ++i) {
+        validatorExtraSet.push(validatorExtra);
+      }
+    }
+
+    _;
+  }
+
+  modifier oncePerBlock() {
+    require(block.number > previousHeight, "can not do this twice in one block");
+    _;
+    previousHeight = block.number;
+  }
+
   /*********************** events **************************/
   event validatorSetUpdated();
   event validatorJailed(address indexed validator);
@@ -97,12 +154,16 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
   event unexpectedPackage(uint8 channelId, bytes msgBytes);
   event paramChange(string key, bytes value);
   event feeBurned(uint256 amount);
+  event validatorEnterMaintenance(address indexed validator);
+  event validatorExitMaintenance(address indexed validator);
+  event finalityRewardDeposit(address indexed validator, uint256 amount);
+  event deprecatedFinalityRewardDeposit(address indexed validator, uint256 amount);
 
   /*********************** init **************************/
   function init() external onlyNotInit{
     (IbcValidatorSetPackage memory validatorSetPkg, bool valid)= decodeValidatorSetSynPackage(INIT_VALIDATORSET_BYTES);
     require(valid, "failed to parse init validatorSet");
-    for (uint i = 0;i<validatorSetPkg.validatorSet.length;i++) {
+    for (uint i;i<validatorSetPkg.validatorSet.length;++i) {
       currentValidatorSet.push(validatorSetPkg.validatorSet[i]);
       currentValidatorSetMap[validatorSetPkg.validatorSet[i].consensusAddress] = i+1;
     }
@@ -110,15 +171,17 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     alreadyInit = true;
   }
 
+  receive() external payable {}
+
   /*********************** Cross Chain App Implement **************************/
-  function handleSynPackage(uint8, bytes calldata msgBytes) onlyInit onlyCrossChainContract external override returns(bytes memory responsePayload) {
+  function handleSynPackage(uint8, bytes calldata msgBytes) onlyInit onlyCrossChainContract initValidatorExtraSet external override returns(bytes memory responsePayload) {
     (IbcValidatorSetPackage memory validatorSetPackage, bool ok) = decodeValidatorSetSynPackage(msgBytes);
     if (!ok) {
       return CmnPkg.encodeCommonAckPackage(ERROR_FAIL_DECODE);
     }
     uint32 resCode;
     if (validatorSetPackage.packageType == VALIDATORS_UPDATE_MESSAGE_TYPE) {
-      resCode = updateValidatorSet(validatorSetPackage.validatorSet);
+      resCode = updateValidatorSet(validatorSetPackage.validatorSet, validatorSetPackage.voteAddrs);
     } else if (validatorSetPackage.packageType == JAIL_MESSAGE_TYPE) {
       if (validatorSetPackage.validatorSet.length != 1) {
         emit failReasonWithStr("length of jail validators must be one");
@@ -200,96 +263,113 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     return CODE_OK;
   }
 
-  function updateValidatorSet(Validator[] memory validatorSet) internal returns (uint32) {
-    // do verify.
-    (bool valid, string memory errMsg) = checkValidatorSet(validatorSet);
-    if (!valid) {
-      emit failReasonWithStr(errMsg);
-      return ERROR_FAIL_CHECK_VALIDATORS;
-    }
-
-    //step 1: do calculate distribution, do not make it as an internal function for saving gas.
-    uint crossSize;
-    uint directSize;
-    for (uint i = 0;i<currentValidatorSet.length;i++) {
-      if (currentValidatorSet[i].incoming >= DUSTY_INCOMING) {
-        crossSize ++;
-      } else if (currentValidatorSet[i].incoming > 0) {
-        directSize ++;
-      }
-    }
-
-    //cross transfer
-    address[] memory crossAddrs = new address[](crossSize);
-    uint256[] memory crossAmounts = new uint256[](crossSize);
-    uint256[] memory crossIndexes = new uint256[](crossSize);
-    address[] memory crossRefundAddrs = new address[](crossSize);
-    uint256 crossTotal;
-    // direct transfer
-    address payable[] memory directAddrs = new address payable[](directSize);
-    uint256[] memory directAmounts = new uint256[](directSize);
-    crossSize = 0;
-    directSize = 0;
-    Validator[] memory validatorSetTemp = validatorSet; // fix error: stack too deep, try removing local variables
-    uint256 relayFee = ITokenHub(TOKEN_HUB_ADDR).getMiniRelayFee();
-    if (relayFee > DUSTY_INCOMING) {
-      emit failReasonWithStr("fee is larger than DUSTY_INCOMING");
-      return ERROR_RELAYFEE_TOO_LARGE;
-    }
-    for (uint i = 0;i<currentValidatorSet.length;i++) {
-      if (currentValidatorSet[i].incoming >= DUSTY_INCOMING) {
-        crossAddrs[crossSize] = currentValidatorSet[i].BBCFeeAddress;
-        uint256 value = currentValidatorSet[i].incoming - currentValidatorSet[i].incoming % PRECISION;
-        crossAmounts[crossSize] = value.sub(relayFee);
-        crossRefundAddrs[crossSize] = currentValidatorSet[i].BBCFeeAddress;
-        crossIndexes[crossSize] = i;
-        crossTotal = crossTotal.add(value);
-        crossSize ++;
-      } else if (currentValidatorSet[i].incoming > 0) {
-        directAddrs[directSize] = currentValidatorSet[i].feeAddress;
-        directAmounts[directSize] = currentValidatorSet[i].incoming;
-        directSize ++;
-      }
-    }
-
-    //step 2: do cross chain transfer
-    bool failCross = false;
-    if (crossTotal > 0) {
-      try ITokenHub(TOKEN_HUB_ADDR).batchTransferOutBNB{value:crossTotal}(crossAddrs, crossAmounts, crossRefundAddrs, uint64(block.timestamp + expireTimeSecondGap)) returns (bool success) {
-        if (success) {
-           emit batchTransfer(crossTotal);
-        } else {
-           emit batchTransferFailed(crossTotal, "batch transfer return false");
+  function updateValidatorSet(Validator[] memory validatorSet, bytes[] memory voteAddrs) internal returns (uint32) {
+    {
+      // do verify.
+      if (validatorSet.length > MAX_NUM_OF_VALIDATORS) {
+        emit failReasonWithStr("the number of validators exceed the limit");
+        return ERROR_FAIL_CHECK_VALIDATORS;
+      }
+      for (uint i; i < validatorSet.length; ++i) {
+        for (uint j; j < i; ++j) {
+          if (validatorSet[i].consensusAddress == validatorSet[j].consensusAddress) {
+            emit failReasonWithStr("duplicate consensus address of validatorSet");
+            return ERROR_FAIL_CHECK_VALIDATORS;
+          }
         }
-      }catch Error(string memory reason) {
-        failCross = true;
-        emit batchTransferFailed(crossTotal, reason);
-      }catch (bytes memory lowLevelData) {
-        failCross = true;
-        emit batchTransferLowerFailed(crossTotal, lowLevelData);
       }
     }
 
-    if (failCross) {
-      for (uint i = 0; i< crossIndexes.length;i++) {
-        uint idx = crossIndexes[i];
-        bool success = currentValidatorSet[idx].feeAddress.send(currentValidatorSet[idx].incoming);
-        if (success) {
-          emit directTransfer(currentValidatorSet[idx].feeAddress, currentValidatorSet[idx].incoming);
-        } else {
-          emit directTransferFail(currentValidatorSet[idx].feeAddress, currentValidatorSet[idx].incoming);
+    // step 0: force all maintaining validators to exit `Temporary Maintenance`
+    // - 1. validators exit maintenance
+    // - 2. clear all maintainInfo
+    // - 3. get unjailed validators from validatorSet
+    (Validator[] memory validatorSetTemp, bytes[] memory voteAddrsTemp) = _forceMaintainingValidatorsExit(validatorSet, voteAddrs);
+
+    {
+      //step 1: do calculate distribution, do not make it as an internal function for saving gas.
+      uint crossSize;
+      uint directSize;
+      uint validatorsNum = currentValidatorSet.length;
+      for (uint i; i < validatorsNum; ++i) {
+        if (currentValidatorSet[i].incoming >= DUSTY_INCOMING) {
+          crossSize ++;
+        } else if (currentValidatorSet[i].incoming > 0) {
+          directSize ++;
         }
       }
-    }
 
-    // step 3: direct transfer
-    if (directAddrs.length>0) {
-      for (uint i = 0;i<directAddrs.length;i++) {
-        bool success = directAddrs[i].send(directAmounts[i]);
-        if (success) {
-          emit directTransfer(directAddrs[i], directAmounts[i]);
-        } else {
-          emit directTransferFail(directAddrs[i], directAmounts[i]);
+      //cross transfer
+      address[] memory crossAddrs = new address[](crossSize);
+      uint256[] memory crossAmounts = new uint256[](crossSize);
+      uint256[] memory crossIndexes = new uint256[](crossSize);
+      address[] memory crossRefundAddrs = new address[](crossSize);
+      uint256 crossTotal;
+      // direct transfer
+      address payable[] memory directAddrs = new address payable[](directSize);
+      uint256[] memory directAmounts = new uint256[](directSize);
+      crossSize = 0;
+      directSize = 0;
+      uint256 relayFee = ITokenHub(TOKEN_HUB_ADDR).getMiniRelayFee();
+      if (relayFee > DUSTY_INCOMING) {
+        emit failReasonWithStr("fee is larger than DUSTY_INCOMING");
+        return ERROR_RELAYFEE_TOO_LARGE;
+      }
+      for (uint i; i < validatorsNum; ++i) {
+        if (currentValidatorSet[i].incoming >= DUSTY_INCOMING) {
+          crossAddrs[crossSize] = currentValidatorSet[i].BBCFeeAddress;
+          uint256 value = currentValidatorSet[i].incoming - currentValidatorSet[i].incoming % PRECISION;
+          crossAmounts[crossSize] = value.sub(relayFee);
+          crossRefundAddrs[crossSize] = currentValidatorSet[i].BBCFeeAddress;
+          crossIndexes[crossSize] = i;
+          crossTotal = crossTotal.add(value);
+          crossSize ++;
+        } else if (currentValidatorSet[i].incoming > 0) {
+          directAddrs[directSize] = currentValidatorSet[i].feeAddress;
+          directAmounts[directSize] = currentValidatorSet[i].incoming;
+          directSize ++;
+        }
+      }
+
+      //step 2: do cross chain transfer
+      bool failCross = false;
+      if (crossTotal > 0) {
+        try ITokenHub(TOKEN_HUB_ADDR).batchTransferOutBNB{value : crossTotal}(crossAddrs, crossAmounts, crossRefundAddrs, uint64(block.timestamp + expireTimeSecondGap)) returns (bool success) {
+          if (success) {
+            emit batchTransfer(crossTotal);
+          } else {
+            emit batchTransferFailed(crossTotal, "batch transfer return false");
+          }
+        }catch Error(string memory reason) {
+          failCross = true;
+          emit batchTransferFailed(crossTotal, reason);
+        }catch (bytes memory lowLevelData) {
+          failCross = true;
+          emit batchTransferLowerFailed(crossTotal, lowLevelData);
+        }
+      }
+
+      if (failCross) {
+        for (uint i; i< crossIndexes.length;++i) {
+          uint idx = crossIndexes[i];
+          bool success = currentValidatorSet[idx].feeAddress.send(currentValidatorSet[idx].incoming);
+          if (success) {
+            emit directTransfer(currentValidatorSet[idx].feeAddress, currentValidatorSet[idx].incoming);
+          } else {
+            emit directTransferFail(currentValidatorSet[idx].feeAddress, currentValidatorSet[idx].incoming);
+          }
+        }
+      }
+
+      // step 3: direct transfer
+      if (directAddrs.length>0) {
+        for (uint i;i<directAddrs.length;++i) {
+          bool success = directAddrs[i].send(directAmounts[i]);
+          if (success) {
+            emit directTransfer(directAddrs[i], directAmounts[i]);
+          } else {
+            emit directTransferFail(directAddrs[i], directAmounts[i]);
+          }
         }
       }
     }
@@ -303,7 +383,7 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     totalInComing = 0;
     numOfJailed = 0;
     if (validatorSetTemp.length>0) {
-      doUpdateState(validatorSetTemp);
+      doUpdateState(validatorSetTemp, voteAddrsTemp);
     }
 
     // step 6: clean slash contract
@@ -312,25 +392,114 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     return CODE_OK;
   }
 
-  function getValidators()external view returns(address[] memory) {
+  function shuffle(address[] memory validators, bytes[] memory voteAddrs, uint256 epochNumber, uint startIdx, uint offset, uint limit, uint modNumber) internal pure {
+    for (uint i; i<limit; ++i) {
+      uint random = uint(keccak256(abi.encodePacked(epochNumber, startIdx+i))) % modNumber;
+      if ( (startIdx+i) != (offset+random) ) {
+        address tmpAddr = validators[startIdx+i];
+        bytes memory tmpBLS = voteAddrs[startIdx+i];
+        validators[startIdx+i] = validators[offset+random];
+        validators[offset+random] = tmpAddr;
+        voteAddrs[startIdx+i] = voteAddrs[offset+random];
+        voteAddrs[offset+random] = tmpBLS;
+      }
+    }
+  }
+
+  function getLivingValidators() external view override returns (address[] memory, bytes[] memory) {
     uint n = currentValidatorSet.length;
-    uint valid = 0;
-    for (uint i = 0;i<n;i++) {
+    uint living = 0;
+    for (uint i = 0; i < n; i++) {
       if (!currentValidatorSet[i].jailed) {
+        living ++;
+      }
+    }
+    address[] memory consensusAddrs = new address[](living);
+    bytes[] memory voteAddrs = new bytes[](living);
+    living = 0;
+    if (validatorExtraSet.length == n) {
+      for (uint i = 0; i < n; i++) {
+        if (!currentValidatorSet[i].jailed) {
+          consensusAddrs[living] = currentValidatorSet[i].consensusAddress;
+          voteAddrs[living] = validatorExtraSet[i].voteAddress;
+          living ++;
+        }
+      }
+    } else {
+      for (uint i = 0; i < n; i++) {
+        if (!currentValidatorSet[i].jailed) {
+          consensusAddrs[living] = currentValidatorSet[i].consensusAddress;
+          living ++;
+        }
+      }
+    }
+    return (consensusAddrs, voteAddrs);
+  }
+
+  function getMiningValidators() external view override returns(address[] memory, bytes[] memory) {
+    uint256 _maxNumOfWorkingCandidates = maxNumOfWorkingCandidates;
+    uint256 _numOfCabinets = numOfCabinets;
+    if (_numOfCabinets == 0 ){
+      _numOfCabinets = INIT_NUM_OF_CABINETS;
+    }
+
+    address[] memory validators = getValidators();
+    bytes[] memory voteAddrs = getVoteAddresses(validators);
+
+    if (validators.length <= _numOfCabinets) {
+      return (validators, voteAddrs);
+    }
+
+    if ((validators.length - _numOfCabinets) < _maxNumOfWorkingCandidates){
+      _maxNumOfWorkingCandidates = validators.length - _numOfCabinets;
+    }
+    if (_maxNumOfWorkingCandidates > 0) {
+      uint256 epochNumber = block.number / EPOCH;
+      shuffle(validators, voteAddrs, epochNumber, _numOfCabinets-_maxNumOfWorkingCandidates, 0, _maxNumOfWorkingCandidates, _numOfCabinets);
+      shuffle(validators, voteAddrs, epochNumber, _numOfCabinets-_maxNumOfWorkingCandidates, _numOfCabinets-_maxNumOfWorkingCandidates,
+        _maxNumOfWorkingCandidates, validators.length - _numOfCabinets+_maxNumOfWorkingCandidates);
+    }
+    address[] memory miningValidators = new address[](_numOfCabinets);
+    bytes[] memory miningVoteAddrs = new bytes[](_numOfCabinets);
+    for (uint i; i<_numOfCabinets; ++i) {
+      miningValidators[i] = validators[i];
+      miningVoteAddrs[i] = voteAddrs[i];
+    }
+    return (miningValidators, miningVoteAddrs);
+  }
+
+  function getValidators() public view returns(address[] memory) {
+    uint n = currentValidatorSet.length;
+    uint valid = 0;
+    for (uint i; i<n; ++i) {
+      if (isWorkingValidator(i)) {
         valid ++;
       }
     }
     address[] memory consensusAddrs = new address[](valid);
     valid = 0;
-    for (uint i = 0;i<n;i++) {
-      if (!currentValidatorSet[i].jailed) {
+    for (uint i; i<n; ++i) {
+      if (isWorkingValidator(i)) {
         consensusAddrs[valid] = currentValidatorSet[i].consensusAddress;
         valid ++;
       }
     }
     return consensusAddrs;
   }
-  
+
+  function isWorkingValidator(uint index) public view returns (bool) {
+    if (index >= currentValidatorSet.length) {
+      return false;
+    }
+
+    // validatorExtraSet[index] should not be used before it has been init.
+    if (index >= validatorExtraSet.length) {
+      return !currentValidatorSet[index].jailed;
+    }
+
+    return !currentValidatorSet[index].jailed && !validatorExtraSet[index].isMaintaining;
+  }
+
   function getIncoming(address validator)external view returns(uint256) {
     uint256 index = currentValidatorSetMap[validator];
     if (index<=0) {
@@ -339,65 +508,145 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     return currentValidatorSet[index-1].incoming;
   }
 
-  /*********************** For slash **************************/
-  function misdemeanor(address validator)external onlySlash override{
+  function isCurrentValidator(address validator) external view override returns (bool) {
     uint256 index = currentValidatorSetMap[validator];
     if (index <= 0) {
-      return;
+      return false;
     }
-    // the actually index
+
+    // the actual index
     index = index - 1;
-    uint256 income = currentValidatorSet[index].incoming;
-    currentValidatorSet[index].incoming = 0;
-    uint256 rest = currentValidatorSet.length - 1;
-    emit validatorMisdemeanor(validator,income);
-    if (rest==0) {
-      // should not happen, but still protect
+    return isWorkingValidator(index);
+  }
+
+  function distributeFinalityReward(address[] calldata valAddrs, uint256[] calldata weights) external onlyCoinbase oncePerBlock onlyInit {
+    if (finalityRewardRatio == 0) {
+      finalityRewardRatio = INIT_FINALITY_REWARD_RATIO;
+    }
+
+    uint256 totalValue;
+    totalValue = (address(SYSTEM_REWARD_ADDR).balance * finalityRewardRatio) / 100;
+    totalValue = ISystemReward(SYSTEM_REWARD_ADDR).claimRewards(payable(address(this)), totalValue);
+    if (totalValue == 0) {
       return;
     }
-    uint256 averageDistribute = income/rest;
-    if (averageDistribute!=0) {
-      for (uint i=0;i<index;i++) {
-        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
-      }
-      uint n = currentValidatorSet.length;
-      for (uint i=index+1;i<n;i++) {
-        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
+
+    uint256 totalWeight;
+    for (uint256 i; i < weights.length; ++i) {
+      totalWeight += weights[i];
+    }
+    if (totalWeight == 0) {
+      return;
+    }
+
+    uint256 value;
+    address valAddr;
+    uint256 index;
+
+    for (uint256 i; i < valAddrs.length; ++i) {
+      value = (totalValue * weights[i]) / totalWeight;
+      valAddr = valAddrs[i];
+      index = currentValidatorSetMap[valAddr];
+      if (index > 0) {
+        Validator storage validator = currentValidatorSet[index - 1];
+        if (validator.jailed) {
+          emit deprecatedFinalityRewardDeposit(valAddr, value);
+        } else {
+          totalInComing = totalInComing.add(value);
+          validator.incoming = validator.incoming.add(value);
+          emit finalityRewardDeposit(valAddr, value);
+        }
+      } else {
+        // get incoming from deprecated validator;
+        emit deprecatedFinalityRewardDeposit(valAddr, value);
       }
     }
-    // averageDistribute*rest may less than income, but it is ok, the dust income will go to system reward eventually.
+
   }
 
-  function felony(address validator)external onlySlash override{
+  function getWorkingValidatorCount() public view returns(uint256 workingValidatorCount) {
+    workingValidatorCount = getValidators().length;
+    uint256 _numOfCabinets = numOfCabinets > 0 ? numOfCabinets : INIT_NUM_OF_CABINETS;
+    if (workingValidatorCount > _numOfCabinets) {
+      workingValidatorCount = _numOfCabinets;
+    }
+    if (workingValidatorCount == 0) {
+      workingValidatorCount = 1;
+    }
+  }
+  /*********************** For slash **************************/
+  function misdemeanor(address validator) external onlySlash initValidatorExtraSet override {
+    uint256 validatorIndex = _misdemeanor(validator);
+    if (canEnterMaintenance(validatorIndex)) {
+      _enterMaintenance(validator, validatorIndex);
+    }
+  }
+
+  function felony(address validator)external onlySlash initValidatorExtraSet override{
     uint256 index = currentValidatorSetMap[validator];
     if (index <= 0) {
       return;
     }
-    // the actually index
+    // the actual index
     index = index - 1;
-    uint256 income = currentValidatorSet[index].incoming;
-    uint256 rest = currentValidatorSet.length - 1;
-    if (rest==0) {
-      // will not remove the validator if it is the only one validator.
-      currentValidatorSet[index].incoming = 0;
-      return;
+
+    bool isMaintaining = validatorExtraSet[index].isMaintaining;
+    if (_felony(validator, index) && isMaintaining) {
+      numOfMaintaining--;
     }
-    emit validatorFelony(validator,income);
-    delete currentValidatorSetMap[validator];
-    // It is ok that the validatorSet is not in order.
-    if (index != currentValidatorSet.length-1) {
-      currentValidatorSet[index] = currentValidatorSet[currentValidatorSet.length-1];
-      currentValidatorSetMap[currentValidatorSet[index].consensusAddress] = index + 1;
+  }
+
+  /*********************** For Temporary Maintenance **************************/
+  function getCurrentValidatorIndex(address _validator) public view returns (uint256) {
+    uint256 index = currentValidatorSetMap[_validator];
+    require(index > 0, "only current validators");
+
+    // the actual index
+    return index - 1;
+  }
+
+  function canEnterMaintenance(uint256 index) public view returns (bool) {
+    if (index >= currentValidatorSet.length) {
+      return false;
     }
-    currentValidatorSet.pop();
-    uint256 averageDistribute = income/rest;
-    if (averageDistribute!=0) {
-      uint n = currentValidatorSet.length;
-      for (uint i=0;i<n;i++) {
-        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
-      }
+
+    if (
+      currentValidatorSet[index].consensusAddress == address(0)     // - 0. check if empty validator
+      || (maxNumOfMaintaining == 0 || maintainSlashScale == 0)      // - 1. check if not start
+      || numOfMaintaining >= maxNumOfMaintaining                    // - 2. check if reached upper limit
+      || !isWorkingValidator(index)                                 // - 3. check if not working(not jailed and not maintaining)
+      || validatorExtraSet[index].enterMaintenanceHeight > 0        // - 5. check if has Maintained during current 24-hour period
+                                                                    // current validators are selected every 24 hours(from 00:00:00 UTC to 23:59:59 UTC)
+                                                                    // for more details, refer to https://github.com/bnb-chain/docs-site/blob/master/docs/smart-chain/validator/Binance%20Smart%20Chain%20Validator%20FAQs%20-%20Updated.md
+      || getValidators().length <= 1                                // - 6. check num of remaining working validators
+    ) {
+      return false;
     }
-    // averageDistribute*rest may less than income, but it is ok, the dust income will go to system reward eventually.
+
+    return true;
+  }
+
+  function enterMaintenance() external initValidatorExtraSet {
+    // check maintain config
+    if (maxNumOfMaintaining == 0) {
+      maxNumOfMaintaining = INIT_MAX_NUM_OF_MAINTAINING;
+    }
+    if (maintainSlashScale == 0) {
+      maintainSlashScale = INIT_MAINTAIN_SLASH_SCALE;
+    }
+
+    uint256 index = getCurrentValidatorIndex(msg.sender);
+    require(canEnterMaintenance(index), "can not enter Temporary Maintenance");
+    _enterMaintenance(msg.sender, index);
+  }
+
+  function exitMaintenance() external {
+    uint256 index = getCurrentValidatorIndex(msg.sender);
+
+    // jailed validators are allowed to exit maintenance
+    require(validatorExtraSet[index].isMaintaining, "not in maintenance");
+    uint256 workingValidatorCount = getWorkingValidatorCount();
+    _exitMaintenance(msg.sender, index, workingValidatorCount);
   }
 
   /*********************** Param update ********************************/
@@ -413,6 +662,43 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
       require(newBurnRatio <= BURN_RATIO_SCALE, "the burnRatio must be no greater than 10000");
       burnRatio = newBurnRatio;
       burnRatioInitialized = true;
+    } else if (Memory.compareStrings(key, "maxNumOfMaintaining")) {
+      require(value.length == 32, "length of maxNumOfMaintaining mismatch");
+      uint256 newMaxNumOfMaintaining = BytesToTypes.bytesToUint256(32, value);
+      uint256 _numOfCabinets = numOfCabinets;
+      if (_numOfCabinets == 0) {
+        _numOfCabinets = INIT_NUM_OF_CABINETS;
+      }
+      require(newMaxNumOfMaintaining < _numOfCabinets, "the maxNumOfMaintaining must be less than numOfCabinets");
+      maxNumOfMaintaining = newMaxNumOfMaintaining;
+    } else if (Memory.compareStrings(key, "maintainSlashScale")) {
+      require(value.length == 32, "length of maintainSlashScale mismatch");
+      uint256 newMaintainSlashScale = BytesToTypes.bytesToUint256(32, value);
+      require(newMaintainSlashScale > 0, "the maintainSlashScale must be greater than 0");
+      maintainSlashScale = newMaintainSlashScale;
+    } else if (Memory.compareStrings(key, "maxNumOfWorkingCandidates")) {
+      require(value.length == 32, "length of maxNumOfWorkingCandidates mismatch");
+      uint256 newMaxNumOfWorkingCandidates = BytesToTypes.bytesToUint256(32, value);
+      require(newMaxNumOfWorkingCandidates <= maxNumOfCandidates, "the maxNumOfWorkingCandidates must be not greater than maxNumOfCandidates");
+      maxNumOfWorkingCandidates = newMaxNumOfWorkingCandidates;
+    } else if (Memory.compareStrings(key, "maxNumOfCandidates")) {
+      require(value.length == 32, "length of maxNumOfCandidates mismatch");
+      uint256 newMaxNumOfCandidates = BytesToTypes.bytesToUint256(32, value);
+      maxNumOfCandidates = newMaxNumOfCandidates;
+      if (maxNumOfWorkingCandidates > maxNumOfCandidates) {
+        maxNumOfWorkingCandidates = maxNumOfCandidates;
+      }
+    } else if (Memory.compareStrings(key, "numOfCabinets")) {
+      require(value.length == 32, "length of numOfCabinets mismatch");
+      uint256 newNumOfCabinets = BytesToTypes.bytesToUint256(32, value);
+      require(newNumOfCabinets > 0, "the numOfCabinets must be greater than 0");
+      require(newNumOfCabinets <= MAX_NUM_OF_VALIDATORS, "the numOfCabinets must be less than MAX_NUM_OF_VALIDATORS");
+      numOfCabinets = newNumOfCabinets;
+    } else if (Memory.compareStrings(key, "finalityRewardRatio")) {
+      require(value.length == 32, "length of finalityRewardRatio mismatch");
+      uint256 newFinalityRewardRatio = BytesToTypes.bytesToUint256(32, value);
+      require(newFinalityRewardRatio >= 1 && newFinalityRewardRatio < 100, "the finalityRewardRatio is out of range");
+      finalityRewardRatio = newFinalityRewardRatio;
     } else {
       require(false, "unknown param");
     }
@@ -420,67 +706,222 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
   }
 
   /*********************** Internal Functions **************************/
+  function doUpdateState(Validator[] memory validatorSet, bytes[] memory voteAddrs) private {
+    uint n = currentValidatorSet.length;
+    uint m = validatorSet.length;
 
-  function checkValidatorSet(Validator[] memory validatorSet) private pure returns(bool, string memory) {
-    if (validatorSet.length > MAX_NUM_OF_VALIDATORS){
-      return (false, "the number of validators exceed the limit");
+    for (uint i; i < n; ++i) {
+      Validator memory oldValidator = currentValidatorSet[i];
+      delete currentValidatorSetMap[oldValidator.consensusAddress];
     }
-    for (uint i = 0;i<validatorSet.length;i++) {
-      for (uint j = 0;j<i;j++) {
-        if (validatorSet[i].consensusAddress == validatorSet[j].consensusAddress) {
-          return (false, "duplicate consensus address of validatorSet");
-        }
+
+    if (n>m) {
+      for (uint i = m; i < n; ++i) {
+        currentValidatorSet.pop();
+        validatorExtraSet.pop();
+      }
+    }
+    uint k = n < m ? n:m;
+    for (uint i; i < k; ++i) {
+      currentValidatorSetMap[validatorSet[i].consensusAddress] = i+1;
+      currentValidatorSet[i] = validatorSet[i];
+      validatorExtraSet[i].voteAddress = voteAddrs[i];
+      validatorExtraSet[i].isMaintaining = false;
+      validatorExtraSet[i].enterMaintenanceHeight = 0;
+    }
+    if (m>n) {
+      ValidatorExtra memory _validatorExtra;
+      for (uint i = n; i < m; i++) {
+        _validatorExtra.voteAddress = voteAddrs[i];
+        currentValidatorSet.push(validatorSet[i]);
+        validatorExtraSet.push(_validatorExtra);
+        currentValidatorSetMap[validatorSet[i].consensusAddress] = i+1;
       }
     }
-    return (true,"");
+
+    // make sure all new validators are cleared maintainInfo
+    // should not happen, still protect
+    numOfMaintaining = 0;
+    n = currentValidatorSet.length;
+    for (uint i; i < n; ++i) {
+      validatorExtraSet[i].isMaintaining = false;
+      validatorExtraSet[i].enterMaintenanceHeight = 0;
+    }
   }
 
-  function doUpdateState(Validator[] memory validatorSet) private{
+  function getVoteAddresses(address[] memory validators) internal view returns(bytes[] memory) {
     uint n = currentValidatorSet.length;
-    uint m = validatorSet.length;
+    uint length = validators.length;
+    bytes[] memory voteAddrs = new bytes[](length);
 
-    for (uint i = 0;i<n;i++) {
-      bool stale = true;
-      Validator memory oldValidator = currentValidatorSet[i];
-      for (uint j = 0;j<m;j++) {
-        if (oldValidator.consensusAddress == validatorSet[j].consensusAddress) {
-          stale = false;
-          break;
-        }
+    // check if validatorExtraSet has been initialized
+    if (validatorExtraSet.length != n) {
+      return voteAddrs;
+    }
+
+    for (uint i; i<length; ++i) {
+      voteAddrs[i] = validatorExtraSet[currentValidatorSetMap[validators[i]]-1].voteAddress;
+    }
+    return voteAddrs;
+  }
+
+  function _misdemeanor(address validator) private returns (uint256) {
+    uint256 index = currentValidatorSetMap[validator];
+    if (index <= 0) {
+      return ~uint256(0);
+    }
+    // the actually index
+    index = index - 1;
+
+    uint256 income = currentValidatorSet[index].incoming;
+    currentValidatorSet[index].incoming = 0;
+    uint256 rest = currentValidatorSet.length - 1;
+    emit validatorMisdemeanor(validator, income);
+    if (rest == 0) {
+      // should not happen, but still protect
+      return index;
+    }
+    uint256 averageDistribute = income / rest;
+    if (averageDistribute != 0) {
+      for (uint i; i < index; ++i) {
+        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
       }
-      if (stale) {
-        delete currentValidatorSetMap[oldValidator.consensusAddress];
+      uint n = currentValidatorSet.length;
+      for (uint i = index + 1; i < n; ++i) {
+        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
       }
     }
+    // averageDistribute*rest may less than income, but it is ok, the dust income will go to system reward eventually.
 
-    if (n>m) {
-      for (uint i = m;i<n;i++) {
-        currentValidatorSet.pop();
+    return index;
+  }
+
+  function _felony(address validator, uint256 index) private returns (bool){
+    uint256 income = currentValidatorSet[index].incoming;
+    uint256 rest = currentValidatorSet.length - 1;
+    if (getValidators().length <= 1) {
+      // will not remove the validator if it is the only one validator.
+      currentValidatorSet[index].incoming = 0;
+      return false;
+    }
+    emit validatorFelony(validator, income);
+
+    // remove the validator from currentValidatorSet
+    delete currentValidatorSetMap[validator];
+    // remove felony validator
+    for (uint i = index;i < (currentValidatorSet.length-1);++i) {
+      currentValidatorSet[i] = currentValidatorSet[i+1];
+      validatorExtraSet[i] = validatorExtraSet[i+1];
+      currentValidatorSetMap[currentValidatorSet[i].consensusAddress] = i+1;
+    }
+    currentValidatorSet.pop();
+    validatorExtraSet.pop();
+
+    uint256 averageDistribute = income / rest;
+    if (averageDistribute != 0) {
+      uint n = currentValidatorSet.length;
+      for (uint i; i < n; ++i) {
+        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
       }
     }
-    uint k = n < m ? n:m;
-    for (uint i = 0;i<k;i++) {
-      if (!isSameValidator(validatorSet[i], currentValidatorSet[i])) {
-        currentValidatorSetMap[validatorSet[i].consensusAddress] = i+1;
-        currentValidatorSet[i] = validatorSet[i];
-      } else {
-        currentValidatorSet[i].incoming = 0;
+    // averageDistribute*rest may less than income, but it is ok, the dust income will go to system reward eventually.
+    return true;
+  }
+
+  function _forceMaintainingValidatorsExit(Validator[] memory _validatorSet, bytes[] memory _voteAddrs) private returns (Validator[] memory unjailedValidatorSet, bytes[] memory unjailedVoteAddrs){
+    uint256 numOfFelony = 0;
+    address validator;
+    bool isFelony;
+
+    // 1. validators exit maintenance
+    uint256 i;
+    // caution: it must calculate workingValidatorCount before _exitMaintenance loop
+    // because the workingValidatorCount will be changed in _exitMaintenance
+    uint256 workingValidatorCount = getWorkingValidatorCount();
+    // caution: it must loop from the endIndex to startIndex in currentValidatorSet
+    // because the validators order in currentValidatorSet may be changed by _felony(validator)
+    for (uint index = currentValidatorSet.length; index > 0; --index) {
+      i = index - 1;  // the actual index
+      if (!validatorExtraSet[i].isMaintaining) {
+        continue;
+      }
+
+      // only maintaining validators
+      validator = currentValidatorSet[i].consensusAddress;
+
+      // exit maintenance
+      isFelony = _exitMaintenance(validator, i, workingValidatorCount);
+      if (!isFelony || numOfFelony >= _validatorSet.length - 1) {
+        continue;
+      }
+
+      // record the jailed validator in validatorSet
+      for (uint k; k < _validatorSet.length; ++k) {
+        if (_validatorSet[k].consensusAddress == validator) {
+          _validatorSet[k].jailed = true;
+          numOfFelony++;
+          break;
+        }
       }
     }
-    if (m>n) {
-      for (uint i = n;i<m;i++) {
-        currentValidatorSet.push(validatorSet[i]);
-        currentValidatorSetMap[validatorSet[i].consensusAddress] = i+1;
+
+    // 2. get unjailed validators from validatorSet
+    unjailedValidatorSet = new Validator[](_validatorSet.length - numOfFelony);
+    unjailedVoteAddrs = new bytes[](_validatorSet.length - numOfFelony);
+    i = 0;
+    for (uint index; index < _validatorSet.length; ++index) {
+      if (!_validatorSet[index].jailed) {
+        unjailedValidatorSet[i] = _validatorSet[index];
+        unjailedVoteAddrs[i] = _voteAddrs[index];
+        i++;
       }
     }
+
+    return (unjailedValidatorSet, unjailedVoteAddrs);
   }
 
-  function isSameValidator(Validator memory v1, Validator memory v2) private pure returns(bool) {
-    return v1.consensusAddress == v2.consensusAddress && v1.feeAddress == v2.feeAddress && v1.BBCFeeAddress == v2.BBCFeeAddress && v1.votingPower == v2.votingPower;
+  function _enterMaintenance(address validator, uint256 index) private {
+    numOfMaintaining++;
+    validatorExtraSet[index].isMaintaining = true;
+    validatorExtraSet[index].enterMaintenanceHeight = block.number;
+    emit validatorEnterMaintenance(validator);
+  }
+
+  function _exitMaintenance(address validator, uint index, uint256 workingValidatorCount) private returns (bool isFelony){
+    if (maintainSlashScale == 0 || workingValidatorCount == 0 || numOfMaintaining == 0) {
+      // should not happen, still protect
+      return false;
+    }
+
+    // step 0: modify numOfMaintaining
+    numOfMaintaining--;
+
+    // step 1: calculate slashCount
+    uint256 slashCount =
+      block.number
+        .sub(validatorExtraSet[index].enterMaintenanceHeight)
+        .div(workingValidatorCount)
+        .div(maintainSlashScale);
+
+    // step 2: clear maintaining info of the validator
+    validatorExtraSet[index].isMaintaining = false;
+
+    // step3: slash the validator
+    (uint256 misdemeanorThreshold, uint256 felonyThreshold) = ISlashIndicator(SLASH_CONTRACT_ADDR).getSlashThresholds();
+    isFelony = false;
+    if (slashCount >= felonyThreshold) {
+      _felony(validator, index);
+      ISlashIndicator(SLASH_CONTRACT_ADDR).sendFelonyPackage(validator);
+      isFelony = true;
+    } else if (slashCount >= misdemeanorThreshold) {
+      _misdemeanor(validator);
+    }
+
+    emit validatorExitMaintenance(validator);
   }
 
   //rlp encode & decode function
-  function decodeValidatorSetSynPackage(bytes memory msgBytes) internal pure returns (IbcValidatorSetPackage memory, bool) {
+  function decodeValidatorSetSynPackage(bytes memory msgBytes) internal pure returns(IbcValidatorSetPackage memory, bool) {
     IbcValidatorSetPackage memory validatorSetPkg;
 
     RLPDecode.Iterator memory iter = msgBytes.toRLPItem().iterator();
@@ -491,13 +932,15 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
         validatorSetPkg.packageType = uint8(iter.next().toUint());
       } else if (idx == 1) {
         RLPDecode.RLPItem[] memory items = iter.next().toList();
-        validatorSetPkg.validatorSet =new Validator[](items.length);
-        for (uint j = 0;j<items.length;j++) {
-          (Validator memory val, bool ok) = decodeValidator(items[j]);
+        validatorSetPkg.validatorSet = new Validator[](items.length);
+        validatorSetPkg.voteAddrs = new bytes[](items.length);
+        for (uint j; j<items.length;++j) {
+          (Validator memory val, bytes memory voteAddr, bool ok) = decodeValidator(items[j]);
           if (!ok) {
             return (validatorSetPkg, false);
           }
           validatorSetPkg.validatorSet[j] = val;
+          validatorSetPkg.voteAddrs[j] = voteAddr;
         }
         success = true;
       } else {
@@ -508,8 +951,9 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     return (validatorSetPkg, success);
   }
 
-  function decodeValidator(RLPDecode.RLPItem memory itemValidator) internal pure returns(Validator memory, bool) {
+  function decodeValidator(RLPDecode.RLPItem memory itemValidator) internal pure returns (Validator memory, bytes memory, bool) {
     Validator memory validator;
+    bytes memory voteAddr;
     RLPDecode.Iterator memory iter = itemValidator.iterator();
     bool success = false;
     uint256 idx=0;
@@ -523,11 +967,16 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
       } else if (idx == 3) {
         validator.votingPower = uint64(iter.next().toUint());
         success = true;
+      } else if (idx == 4) {
+        voteAddr = iter.next().toBytes();
+        success = true;
       } else {
         break;
       }
       idx++;
     }
-    return (validator, success);
+    return (validator, voteAddr, success);
   }
+
+    
 }
diff --git a/contracts/BSCValidatorSet.template b/contracts/BSCValidatorSet.template
index 96b59791..ab2dca2f 100644
--- a/contracts/BSCValidatorSet.template
+++ b/contracts/BSCValidatorSet.template
@@ -1,4 +1,5 @@
 pragma solidity 0.6.4;
+pragma experimental ABIEncoderV2;
 
 import "./System.sol";
 import "./lib/BytesToTypes.sol";
@@ -39,6 +40,8 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
   uint32 public constant ERROR_LEN_OF_VAL_MISMATCH = 103;
   uint32 public constant ERROR_RELAYFEE_TOO_LARGE = 104;
 
+  uint256 public constant INIT_NUM_OF_CABINETS = 21;
+  uint256 public constant EPOCH = 200;
 
   /*********************** state of the contract **************************/
   Validator[] public currentValidatorSet;
@@ -56,7 +59,29 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
   uint256 public burnRatio;
   bool public burnRatioInitialized;
 
-  struct Validator{
+  // BEP-127 Temporary Maintenance
+  uint256 public constant INIT_MAX_NUM_OF_MAINTAINING = 3;
+  uint256 public constant INIT_MAINTAIN_SLASH_SCALE = 2;
+
+  uint256 public maxNumOfMaintaining;
+  uint256 public numOfMaintaining;
+  uint256 public maintainSlashScale;
+
+  // Corresponds strictly to currentValidatorSet
+  // validatorExtraSet[index] = the `ValidatorExtra` info of currentValidatorSet[index]
+  ValidatorExtra[] public validatorExtraSet;
+  // BEP-131 candidate validator
+  uint256 public numOfCabinets;
+  uint256 public maxNumOfCandidates;
+  uint256 public maxNumOfWorkingCandidates;
+
+  // BEP-126 Fast Finality
+  uint256 public constant INIT_FINALITY_REWARD_RATIO = 10;
+
+  uint256 public finalityRewardRatio;
+  uint256 public previousHeight;
+
+  struct Validator {
     address consensusAddress;
     address payable feeAddress;
     address BBCFeeAddress;
@@ -67,10 +92,23 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     uint256 incoming;
   }
 
+  struct ValidatorExtra {
+    // BEP-127 Temporary Maintenance
+    uint256 enterMaintenanceHeight;     // the height from where the validator enters Maintenance
+    bool isMaintaining;
+
+    // BEP-126 Fast Finality
+    bytes voteAddress;
+
+    // reserve for future use
+    uint256[19] slots;
+  }
+
   /*********************** cross chain package **************************/
   struct IbcValidatorSetPackage {
     uint8  packageType;
     Validator[] validatorSet;
+    bytes[] voteAddrs;
   }
 
   /*********************** modifiers **************************/
@@ -79,6 +117,25 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     _;
   }
 
+  modifier initValidatorExtraSet() {
+    if (validatorExtraSet.length == 0) {
+      ValidatorExtra memory validatorExtra;
+      // init validatorExtraSet
+      uint256 validatorsNum = currentValidatorSet.length;
+      for (uint i; i < validatorsNum; ++i) {
+        validatorExtraSet.push(validatorExtra);
+      }
+    }
+
+    _;
+  }
+
+  modifier oncePerBlock() {
+    require(block.number > previousHeight, "can not do this twice in one block");
+    _;
+    previousHeight = block.number;
+  }
+
   /*********************** events **************************/
   event validatorSetUpdated();
   event validatorJailed(address indexed validator);
@@ -97,12 +154,16 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
   event unexpectedPackage(uint8 channelId, bytes msgBytes);
   event paramChange(string key, bytes value);
   event feeBurned(uint256 amount);
+  event validatorEnterMaintenance(address indexed validator);
+  event validatorExitMaintenance(address indexed validator);
+  event finalityRewardDeposit(address indexed validator, uint256 amount);
+  event deprecatedFinalityRewardDeposit(address indexed validator, uint256 amount);
 
   /*********************** init **************************/
   function init() external onlyNotInit{
     (IbcValidatorSetPackage memory validatorSetPkg, bool valid)= decodeValidatorSetSynPackage(INIT_VALIDATORSET_BYTES);
     require(valid, "failed to parse init validatorSet");
-    for (uint i = 0;i<validatorSetPkg.validatorSet.length;i++) {
+    for (uint i;i<validatorSetPkg.validatorSet.length;++i) {
       currentValidatorSet.push(validatorSetPkg.validatorSet[i]);
       currentValidatorSetMap[validatorSetPkg.validatorSet[i].consensusAddress] = i+1;
     }
@@ -110,15 +171,17 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     alreadyInit = true;
   }
 
+  receive() external payable {}
+
   /*********************** Cross Chain App Implement **************************/
-  function handleSynPackage(uint8, bytes calldata msgBytes) onlyInit onlyCrossChainContract external override returns(bytes memory responsePayload) {
+  function handleSynPackage(uint8, bytes calldata msgBytes) onlyInit onlyCrossChainContract initValidatorExtraSet external override returns(bytes memory responsePayload) {
     (IbcValidatorSetPackage memory validatorSetPackage, bool ok) = decodeValidatorSetSynPackage(msgBytes);
     if (!ok) {
       return CmnPkg.encodeCommonAckPackage(ERROR_FAIL_DECODE);
     }
     uint32 resCode;
     if (validatorSetPackage.packageType == VALIDATORS_UPDATE_MESSAGE_TYPE) {
-      resCode = updateValidatorSet(validatorSetPackage.validatorSet);
+      resCode = updateValidatorSet(validatorSetPackage.validatorSet, validatorSetPackage.voteAddrs);
     } else if (validatorSetPackage.packageType == JAIL_MESSAGE_TYPE) {
       if (validatorSetPackage.validatorSet.length != 1) {
         emit failReasonWithStr("length of jail validators must be one");
@@ -200,96 +263,113 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     return CODE_OK;
   }
 
-  function updateValidatorSet(Validator[] memory validatorSet) internal returns (uint32) {
-    // do verify.
-    (bool valid, string memory errMsg) = checkValidatorSet(validatorSet);
-    if (!valid) {
-      emit failReasonWithStr(errMsg);
-      return ERROR_FAIL_CHECK_VALIDATORS;
-    }
-
-    //step 1: do calculate distribution, do not make it as an internal function for saving gas.
-    uint crossSize;
-    uint directSize;
-    for (uint i = 0;i<currentValidatorSet.length;i++) {
-      if (currentValidatorSet[i].incoming >= DUSTY_INCOMING) {
-        crossSize ++;
-      } else if (currentValidatorSet[i].incoming > 0) {
-        directSize ++;
-      }
-    }
-
-    //cross transfer
-    address[] memory crossAddrs = new address[](crossSize);
-    uint256[] memory crossAmounts = new uint256[](crossSize);
-    uint256[] memory crossIndexes = new uint256[](crossSize);
-    address[] memory crossRefundAddrs = new address[](crossSize);
-    uint256 crossTotal;
-    // direct transfer
-    address payable[] memory directAddrs = new address payable[](directSize);
-    uint256[] memory directAmounts = new uint256[](directSize);
-    crossSize = 0;
-    directSize = 0;
-    Validator[] memory validatorSetTemp = validatorSet; // fix error: stack too deep, try removing local variables
-    uint256 relayFee = ITokenHub(TOKEN_HUB_ADDR).getMiniRelayFee();
-    if (relayFee > DUSTY_INCOMING) {
-      emit failReasonWithStr("fee is larger than DUSTY_INCOMING");
-      return ERROR_RELAYFEE_TOO_LARGE;
-    }
-    for (uint i = 0;i<currentValidatorSet.length;i++) {
-      if (currentValidatorSet[i].incoming >= DUSTY_INCOMING) {
-        crossAddrs[crossSize] = currentValidatorSet[i].BBCFeeAddress;
-        uint256 value = currentValidatorSet[i].incoming - currentValidatorSet[i].incoming % PRECISION;
-        crossAmounts[crossSize] = value.sub(relayFee);
-        crossRefundAddrs[crossSize] = currentValidatorSet[i].BBCFeeAddress;
-        crossIndexes[crossSize] = i;
-        crossTotal = crossTotal.add(value);
-        crossSize ++;
-      } else if (currentValidatorSet[i].incoming > 0) {
-        directAddrs[directSize] = currentValidatorSet[i].feeAddress;
-        directAmounts[directSize] = currentValidatorSet[i].incoming;
-        directSize ++;
-      }
-    }
-
-    //step 2: do cross chain transfer
-    bool failCross = false;
-    if (crossTotal > 0) {
-      try ITokenHub(TOKEN_HUB_ADDR).batchTransferOutBNB{value:crossTotal}(crossAddrs, crossAmounts, crossRefundAddrs, uint64(block.timestamp + expireTimeSecondGap)) returns (bool success) {
-        if (success) {
-           emit batchTransfer(crossTotal);
-        } else {
-           emit batchTransferFailed(crossTotal, "batch transfer return false");
+  function updateValidatorSet(Validator[] memory validatorSet, bytes[] memory voteAddrs) internal returns (uint32) {
+    {
+      // do verify.
+      if (validatorSet.length > MAX_NUM_OF_VALIDATORS) {
+        emit failReasonWithStr("the number of validators exceed the limit");
+        return ERROR_FAIL_CHECK_VALIDATORS;
+      }
+      for (uint i; i < validatorSet.length; ++i) {
+        for (uint j; j < i; ++j) {
+          if (validatorSet[i].consensusAddress == validatorSet[j].consensusAddress) {
+            emit failReasonWithStr("duplicate consensus address of validatorSet");
+            return ERROR_FAIL_CHECK_VALIDATORS;
+          }
         }
-      }catch Error(string memory reason) {
-        failCross = true;
-        emit batchTransferFailed(crossTotal, reason);
-      }catch (bytes memory lowLevelData) {
-        failCross = true;
-        emit batchTransferLowerFailed(crossTotal, lowLevelData);
       }
     }
 
-    if (failCross) {
-      for (uint i = 0; i< crossIndexes.length;i++) {
-        uint idx = crossIndexes[i];
-        bool success = currentValidatorSet[idx].feeAddress.send(currentValidatorSet[idx].incoming);
-        if (success) {
-          emit directTransfer(currentValidatorSet[idx].feeAddress, currentValidatorSet[idx].incoming);
-        } else {
-          emit directTransferFail(currentValidatorSet[idx].feeAddress, currentValidatorSet[idx].incoming);
+    // step 0: force all maintaining validators to exit `Temporary Maintenance`
+    // - 1. validators exit maintenance
+    // - 2. clear all maintainInfo
+    // - 3. get unjailed validators from validatorSet
+    (Validator[] memory validatorSetTemp, bytes[] memory voteAddrsTemp) = _forceMaintainingValidatorsExit(validatorSet, voteAddrs);
+
+    {
+      //step 1: do calculate distribution, do not make it as an internal function for saving gas.
+      uint crossSize;
+      uint directSize;
+      uint validatorsNum = currentValidatorSet.length;
+      for (uint i; i < validatorsNum; ++i) {
+        if (currentValidatorSet[i].incoming >= DUSTY_INCOMING) {
+          crossSize ++;
+        } else if (currentValidatorSet[i].incoming > 0) {
+          directSize ++;
         }
       }
-    }
 
-    // step 3: direct transfer
-    if (directAddrs.length>0) {
-      for (uint i = 0;i<directAddrs.length;i++) {
-        bool success = directAddrs[i].send(directAmounts[i]);
-        if (success) {
-          emit directTransfer(directAddrs[i], directAmounts[i]);
-        } else {
-          emit directTransferFail(directAddrs[i], directAmounts[i]);
+      //cross transfer
+      address[] memory crossAddrs = new address[](crossSize);
+      uint256[] memory crossAmounts = new uint256[](crossSize);
+      uint256[] memory crossIndexes = new uint256[](crossSize);
+      address[] memory crossRefundAddrs = new address[](crossSize);
+      uint256 crossTotal;
+      // direct transfer
+      address payable[] memory directAddrs = new address payable[](directSize);
+      uint256[] memory directAmounts = new uint256[](directSize);
+      crossSize = 0;
+      directSize = 0;
+      uint256 relayFee = ITokenHub(TOKEN_HUB_ADDR).getMiniRelayFee();
+      if (relayFee > DUSTY_INCOMING) {
+        emit failReasonWithStr("fee is larger than DUSTY_INCOMING");
+        return ERROR_RELAYFEE_TOO_LARGE;
+      }
+      for (uint i; i < validatorsNum; ++i) {
+        if (currentValidatorSet[i].incoming >= DUSTY_INCOMING) {
+          crossAddrs[crossSize] = currentValidatorSet[i].BBCFeeAddress;
+          uint256 value = currentValidatorSet[i].incoming - currentValidatorSet[i].incoming % PRECISION;
+          crossAmounts[crossSize] = value.sub(relayFee);
+          crossRefundAddrs[crossSize] = currentValidatorSet[i].BBCFeeAddress;
+          crossIndexes[crossSize] = i;
+          crossTotal = crossTotal.add(value);
+          crossSize ++;
+        } else if (currentValidatorSet[i].incoming > 0) {
+          directAddrs[directSize] = currentValidatorSet[i].feeAddress;
+          directAmounts[directSize] = currentValidatorSet[i].incoming;
+          directSize ++;
+        }
+      }
+
+      //step 2: do cross chain transfer
+      bool failCross = false;
+      if (crossTotal > 0) {
+        try ITokenHub(TOKEN_HUB_ADDR).batchTransferOutBNB{value : crossTotal}(crossAddrs, crossAmounts, crossRefundAddrs, uint64(block.timestamp + expireTimeSecondGap)) returns (bool success) {
+          if (success) {
+            emit batchTransfer(crossTotal);
+          } else {
+            emit batchTransferFailed(crossTotal, "batch transfer return false");
+          }
+        }catch Error(string memory reason) {
+          failCross = true;
+          emit batchTransferFailed(crossTotal, reason);
+        }catch (bytes memory lowLevelData) {
+          failCross = true;
+          emit batchTransferLowerFailed(crossTotal, lowLevelData);
+        }
+      }
+
+      if (failCross) {
+        for (uint i; i< crossIndexes.length;++i) {
+          uint idx = crossIndexes[i];
+          bool success = currentValidatorSet[idx].feeAddress.send(currentValidatorSet[idx].incoming);
+          if (success) {
+            emit directTransfer(currentValidatorSet[idx].feeAddress, currentValidatorSet[idx].incoming);
+          } else {
+            emit directTransferFail(currentValidatorSet[idx].feeAddress, currentValidatorSet[idx].incoming);
+          }
+        }
+      }
+
+      // step 3: direct transfer
+      if (directAddrs.length>0) {
+        for (uint i;i<directAddrs.length;++i) {
+          bool success = directAddrs[i].send(directAmounts[i]);
+          if (success) {
+            emit directTransfer(directAddrs[i], directAmounts[i]);
+          } else {
+            emit directTransferFail(directAddrs[i], directAmounts[i]);
+          }
         }
       }
     }
@@ -303,7 +383,7 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     totalInComing = 0;
     numOfJailed = 0;
     if (validatorSetTemp.length>0) {
-      doUpdateState(validatorSetTemp);
+      doUpdateState(validatorSetTemp, voteAddrsTemp);
     }
 
     // step 6: clean slash contract
@@ -312,34 +392,114 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     return CODE_OK;
   }
 
-  function getValidators()external view returns(address[] memory) {
+  function shuffle(address[] memory validators, bytes[] memory voteAddrs, uint256 epochNumber, uint startIdx, uint offset, uint limit, uint modNumber) internal pure {
+    for (uint i; i<limit; ++i) {
+      uint random = uint(keccak256(abi.encodePacked(epochNumber, startIdx+i))) % modNumber;
+      if ( (startIdx+i) != (offset+random) ) {
+        address tmpAddr = validators[startIdx+i];
+        bytes memory tmpBLS = voteAddrs[startIdx+i];
+        validators[startIdx+i] = validators[offset+random];
+        validators[offset+random] = tmpAddr;
+        voteAddrs[startIdx+i] = voteAddrs[offset+random];
+        voteAddrs[offset+random] = tmpBLS;
+      }
+    }
+  }
+
+  function getLivingValidators() external view override returns (address[] memory, bytes[] memory) {
     uint n = currentValidatorSet.length;
-    uint valid = 0;
-    for (uint i = 0;i<n;i++) {
+    uint living = 0;
+    for (uint i = 0; i < n; i++) {
       if (!currentValidatorSet[i].jailed) {
+        living ++;
+      }
+    }
+    address[] memory consensusAddrs = new address[](living);
+    bytes[] memory voteAddrs = new bytes[](living);
+    living = 0;
+    if (validatorExtraSet.length == n) {
+      for (uint i = 0; i < n; i++) {
+        if (!currentValidatorSet[i].jailed) {
+          consensusAddrs[living] = currentValidatorSet[i].consensusAddress;
+          voteAddrs[living] = validatorExtraSet[i].voteAddress;
+          living ++;
+        }
+      }
+    } else {
+      for (uint i = 0; i < n; i++) {
+        if (!currentValidatorSet[i].jailed) {
+          consensusAddrs[living] = currentValidatorSet[i].consensusAddress;
+          living ++;
+        }
+      }
+    }
+    return (consensusAddrs, voteAddrs);
+  }
+
+  function getMiningValidators() external view override returns(address[] memory, bytes[] memory) {
+    uint256 _maxNumOfWorkingCandidates = maxNumOfWorkingCandidates;
+    uint256 _numOfCabinets = numOfCabinets;
+    if (_numOfCabinets == 0 ){
+      _numOfCabinets = INIT_NUM_OF_CABINETS;
+    }
+
+    address[] memory validators = getValidators();
+    bytes[] memory voteAddrs = getVoteAddresses(validators);
+
+    if (validators.length <= _numOfCabinets) {
+      return (validators, voteAddrs);
+    }
+
+    if ((validators.length - _numOfCabinets) < _maxNumOfWorkingCandidates){
+      _maxNumOfWorkingCandidates = validators.length - _numOfCabinets;
+    }
+    if (_maxNumOfWorkingCandidates > 0) {
+      uint256 epochNumber = block.number / EPOCH;
+      shuffle(validators, voteAddrs, epochNumber, _numOfCabinets-_maxNumOfWorkingCandidates, 0, _maxNumOfWorkingCandidates, _numOfCabinets);
+      shuffle(validators, voteAddrs, epochNumber, _numOfCabinets-_maxNumOfWorkingCandidates, _numOfCabinets-_maxNumOfWorkingCandidates,
+        _maxNumOfWorkingCandidates, validators.length - _numOfCabinets+_maxNumOfWorkingCandidates);
+    }
+    address[] memory miningValidators = new address[](_numOfCabinets);
+    bytes[] memory miningVoteAddrs = new bytes[](_numOfCabinets);
+    for (uint i; i<_numOfCabinets; ++i) {
+      miningValidators[i] = validators[i];
+      miningVoteAddrs[i] = voteAddrs[i];
+    }
+    return (miningValidators, miningVoteAddrs);
+  }
+
+  function getValidators() public view returns(address[] memory) {
+    uint n = currentValidatorSet.length;
+    uint valid = 0;
+    for (uint i; i<n; ++i) {
+      if (isWorkingValidator(i)) {
         valid ++;
       }
     }
     address[] memory consensusAddrs = new address[](valid);
     valid = 0;
-    for (uint i = 0;i<n;i++) {
-      if (!currentValidatorSet[i].jailed) {
+    for (uint i; i<n; ++i) {
+      if (isWorkingValidator(i)) {
         consensusAddrs[valid] = currentValidatorSet[i].consensusAddress;
         valid ++;
       }
     }
     return consensusAddrs;
   }
-  {% if mock %}
 
-  function isValidatorExist(address validator)external view returns(bool) {
-    uint256 index = currentValidatorSetMap[validator];
-    if (index<=0) {
+  function isWorkingValidator(uint index) public view returns (bool) {
+    if (index >= currentValidatorSet.length) {
       return false;
     }
-    return true;
+
+    // validatorExtraSet[index] should not be used before it has been init.
+    if (index >= validatorExtraSet.length) {
+      return !currentValidatorSet[index].jailed;
+    }
+
+    return !currentValidatorSet[index].jailed && !validatorExtraSet[index].isMaintaining;
   }
-  {% endif %}
+
   function getIncoming(address validator)external view returns(uint256) {
     uint256 index = currentValidatorSetMap[validator];
     if (index<=0) {
@@ -348,65 +508,145 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     return currentValidatorSet[index-1].incoming;
   }
 
-  /*********************** For slash **************************/
-  function misdemeanor(address validator)external onlySlash override{
+  function isCurrentValidator(address validator) external view override returns (bool) {
     uint256 index = currentValidatorSetMap[validator];
     if (index <= 0) {
-      return;
+      return false;
     }
-    // the actually index
+
+    // the actual index
     index = index - 1;
-    uint256 income = currentValidatorSet[index].incoming;
-    currentValidatorSet[index].incoming = 0;
-    uint256 rest = currentValidatorSet.length - 1;
-    emit validatorMisdemeanor(validator,income);
-    if (rest==0) {
-      // should not happen, but still protect
+    return isWorkingValidator(index);
+  }
+
+  function distributeFinalityReward(address[] calldata valAddrs, uint256[] calldata weights) external onlyCoinbase oncePerBlock onlyInit {
+    if (finalityRewardRatio == 0) {
+      finalityRewardRatio = INIT_FINALITY_REWARD_RATIO;
+    }
+
+    uint256 totalValue;
+    totalValue = (address(SYSTEM_REWARD_ADDR).balance * finalityRewardRatio) / 100;
+    totalValue = ISystemReward(SYSTEM_REWARD_ADDR).claimRewards(payable(address(this)), totalValue);
+    if (totalValue == 0) {
       return;
     }
-    uint256 averageDistribute = income/rest;
-    if (averageDistribute!=0) {
-      for (uint i=0;i<index;i++) {
-        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
-      }
-      uint n = currentValidatorSet.length;
-      for (uint i=index+1;i<n;i++) {
-        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
+
+    uint256 totalWeight;
+    for (uint256 i; i < weights.length; ++i) {
+      totalWeight += weights[i];
+    }
+    if (totalWeight == 0) {
+      return;
+    }
+
+    uint256 value;
+    address valAddr;
+    uint256 index;
+
+    for (uint256 i; i < valAddrs.length; ++i) {
+      value = (totalValue * weights[i]) / totalWeight;
+      valAddr = valAddrs[i];
+      index = currentValidatorSetMap[valAddr];
+      if (index > 0) {
+        Validator storage validator = currentValidatorSet[index - 1];
+        if (validator.jailed) {
+          emit deprecatedFinalityRewardDeposit(valAddr, value);
+        } else {
+          totalInComing = totalInComing.add(value);
+          validator.incoming = validator.incoming.add(value);
+          emit finalityRewardDeposit(valAddr, value);
+        }
+      } else {
+        // get incoming from deprecated validator;
+        emit deprecatedFinalityRewardDeposit(valAddr, value);
       }
     }
-    // averageDistribute*rest may less than income, but it is ok, the dust income will go to system reward eventually.
+
+  }
+
+  function getWorkingValidatorCount() public view returns(uint256 workingValidatorCount) {
+    workingValidatorCount = getValidators().length;
+    uint256 _numOfCabinets = numOfCabinets > 0 ? numOfCabinets : INIT_NUM_OF_CABINETS;
+    if (workingValidatorCount > _numOfCabinets) {
+      workingValidatorCount = _numOfCabinets;
+    }
+    if (workingValidatorCount == 0) {
+      workingValidatorCount = 1;
+    }
+  }
+  /*********************** For slash **************************/
+  function misdemeanor(address validator) external onlySlash initValidatorExtraSet override {
+    uint256 validatorIndex = _misdemeanor(validator);
+    if (canEnterMaintenance(validatorIndex)) {
+      _enterMaintenance(validator, validatorIndex);
+    }
   }
 
-  function felony(address validator)external onlySlash override{
+  function felony(address validator)external onlySlash initValidatorExtraSet override{
     uint256 index = currentValidatorSetMap[validator];
     if (index <= 0) {
       return;
     }
-    // the actually index
+    // the actual index
     index = index - 1;
-    uint256 income = currentValidatorSet[index].incoming;
-    uint256 rest = currentValidatorSet.length - 1;
-    if (rest==0) {
-      // will not remove the validator if it is the only one validator.
-      currentValidatorSet[index].incoming = 0;
-      return;
+
+    bool isMaintaining = validatorExtraSet[index].isMaintaining;
+    if (_felony(validator, index) && isMaintaining) {
+      numOfMaintaining--;
     }
-    emit validatorFelony(validator,income);
-    delete currentValidatorSetMap[validator];
-    // It is ok that the validatorSet is not in order.
-    if (index != currentValidatorSet.length-1) {
-      currentValidatorSet[index] = currentValidatorSet[currentValidatorSet.length-1];
-      currentValidatorSetMap[currentValidatorSet[index].consensusAddress] = index + 1;
+  }
+
+  /*********************** For Temporary Maintenance **************************/
+  function getCurrentValidatorIndex(address _validator) public view returns (uint256) {
+    uint256 index = currentValidatorSetMap[_validator];
+    require(index > 0, "only current validators");
+
+    // the actual index
+    return index - 1;
+  }
+
+  function canEnterMaintenance(uint256 index) public view returns (bool) {
+    if (index >= currentValidatorSet.length) {
+      return false;
     }
-    currentValidatorSet.pop();
-    uint256 averageDistribute = income/rest;
-    if (averageDistribute!=0) {
-      uint n = currentValidatorSet.length;
-      for (uint i=0;i<n;i++) {
-        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
-      }
+
+    if (
+      currentValidatorSet[index].consensusAddress == address(0)     // - 0. check if empty validator
+      || (maxNumOfMaintaining == 0 || maintainSlashScale == 0)      // - 1. check if not start
+      || numOfMaintaining >= maxNumOfMaintaining                    // - 2. check if reached upper limit
+      || !isWorkingValidator(index)                                 // - 3. check if not working(not jailed and not maintaining)
+      || validatorExtraSet[index].enterMaintenanceHeight > 0        // - 5. check if has Maintained during current 24-hour period
+                                                                    // current validators are selected every 24 hours(from 00:00:00 UTC to 23:59:59 UTC)
+                                                                    // for more details, refer to https://github.com/bnb-chain/docs-site/blob/master/docs/smart-chain/validator/Binance%20Smart%20Chain%20Validator%20FAQs%20-%20Updated.md
+      || getValidators().length <= 1                                // - 6. check num of remaining working validators
+    ) {
+      return false;
     }
-    // averageDistribute*rest may less than income, but it is ok, the dust income will go to system reward eventually.
+
+    return true;
+  }
+
+  function enterMaintenance() external initValidatorExtraSet {
+    // check maintain config
+    if (maxNumOfMaintaining == 0) {
+      maxNumOfMaintaining = INIT_MAX_NUM_OF_MAINTAINING;
+    }
+    if (maintainSlashScale == 0) {
+      maintainSlashScale = INIT_MAINTAIN_SLASH_SCALE;
+    }
+
+    uint256 index = getCurrentValidatorIndex(msg.sender);
+    require(canEnterMaintenance(index), "can not enter Temporary Maintenance");
+    _enterMaintenance(msg.sender, index);
+  }
+
+  function exitMaintenance() external {
+    uint256 index = getCurrentValidatorIndex(msg.sender);
+
+    // jailed validators are allowed to exit maintenance
+    require(validatorExtraSet[index].isMaintaining, "not in maintenance");
+    uint256 workingValidatorCount = getWorkingValidatorCount();
+    _exitMaintenance(msg.sender, index, workingValidatorCount);
   }
 
   /*********************** Param update ********************************/
@@ -422,6 +662,43 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
       require(newBurnRatio <= BURN_RATIO_SCALE, "the burnRatio must be no greater than 10000");
       burnRatio = newBurnRatio;
       burnRatioInitialized = true;
+    } else if (Memory.compareStrings(key, "maxNumOfMaintaining")) {
+      require(value.length == 32, "length of maxNumOfMaintaining mismatch");
+      uint256 newMaxNumOfMaintaining = BytesToTypes.bytesToUint256(32, value);
+      uint256 _numOfCabinets = numOfCabinets;
+      if (_numOfCabinets == 0) {
+        _numOfCabinets = INIT_NUM_OF_CABINETS;
+      }
+      require(newMaxNumOfMaintaining < _numOfCabinets, "the maxNumOfMaintaining must be less than numOfCabinets");
+      maxNumOfMaintaining = newMaxNumOfMaintaining;
+    } else if (Memory.compareStrings(key, "maintainSlashScale")) {
+      require(value.length == 32, "length of maintainSlashScale mismatch");
+      uint256 newMaintainSlashScale = BytesToTypes.bytesToUint256(32, value);
+      require(newMaintainSlashScale > 0, "the maintainSlashScale must be greater than 0");
+      maintainSlashScale = newMaintainSlashScale;
+    } else if (Memory.compareStrings(key, "maxNumOfWorkingCandidates")) {
+      require(value.length == 32, "length of maxNumOfWorkingCandidates mismatch");
+      uint256 newMaxNumOfWorkingCandidates = BytesToTypes.bytesToUint256(32, value);
+      require(newMaxNumOfWorkingCandidates <= maxNumOfCandidates, "the maxNumOfWorkingCandidates must be not greater than maxNumOfCandidates");
+      maxNumOfWorkingCandidates = newMaxNumOfWorkingCandidates;
+    } else if (Memory.compareStrings(key, "maxNumOfCandidates")) {
+      require(value.length == 32, "length of maxNumOfCandidates mismatch");
+      uint256 newMaxNumOfCandidates = BytesToTypes.bytesToUint256(32, value);
+      maxNumOfCandidates = newMaxNumOfCandidates;
+      if (maxNumOfWorkingCandidates > maxNumOfCandidates) {
+        maxNumOfWorkingCandidates = maxNumOfCandidates;
+      }
+    } else if (Memory.compareStrings(key, "numOfCabinets")) {
+      require(value.length == 32, "length of numOfCabinets mismatch");
+      uint256 newNumOfCabinets = BytesToTypes.bytesToUint256(32, value);
+      require(newNumOfCabinets > 0, "the numOfCabinets must be greater than 0");
+      require(newNumOfCabinets <= MAX_NUM_OF_VALIDATORS, "the numOfCabinets must be less than MAX_NUM_OF_VALIDATORS");
+      numOfCabinets = newNumOfCabinets;
+    } else if (Memory.compareStrings(key, "finalityRewardRatio")) {
+      require(value.length == 32, "length of finalityRewardRatio mismatch");
+      uint256 newFinalityRewardRatio = BytesToTypes.bytesToUint256(32, value);
+      require(newFinalityRewardRatio >= 1 && newFinalityRewardRatio < 100, "the finalityRewardRatio is out of range");
+      finalityRewardRatio = newFinalityRewardRatio;
     } else {
       require(false, "unknown param");
     }
@@ -429,67 +706,222 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
   }
 
   /*********************** Internal Functions **************************/
+  function doUpdateState(Validator[] memory validatorSet, bytes[] memory voteAddrs) private {
+    uint n = currentValidatorSet.length;
+    uint m = validatorSet.length;
 
-  function checkValidatorSet(Validator[] memory validatorSet) private pure returns(bool, string memory) {
-    if (validatorSet.length > MAX_NUM_OF_VALIDATORS){
-      return (false, "the number of validators exceed the limit");
+    for (uint i; i < n; ++i) {
+      Validator memory oldValidator = currentValidatorSet[i];
+      delete currentValidatorSetMap[oldValidator.consensusAddress];
     }
-    for (uint i = 0;i<validatorSet.length;i++) {
-      for (uint j = 0;j<i;j++) {
-        if (validatorSet[i].consensusAddress == validatorSet[j].consensusAddress) {
-          return (false, "duplicate consensus address of validatorSet");
-        }
+
+    if (n>m) {
+      for (uint i = m; i < n; ++i) {
+        currentValidatorSet.pop();
+        validatorExtraSet.pop();
       }
     }
-    return (true,"");
+    uint k = n < m ? n:m;
+    for (uint i; i < k; ++i) {
+      currentValidatorSetMap[validatorSet[i].consensusAddress] = i+1;
+      currentValidatorSet[i] = validatorSet[i];
+      validatorExtraSet[i].voteAddress = voteAddrs[i];
+      validatorExtraSet[i].isMaintaining = false;
+      validatorExtraSet[i].enterMaintenanceHeight = 0;
+    }
+    if (m>n) {
+      ValidatorExtra memory _validatorExtra;
+      for (uint i = n; i < m; i++) {
+        _validatorExtra.voteAddress = voteAddrs[i];
+        currentValidatorSet.push(validatorSet[i]);
+        validatorExtraSet.push(_validatorExtra);
+        currentValidatorSetMap[validatorSet[i].consensusAddress] = i+1;
+      }
+    }
+
+    // make sure all new validators are cleared maintainInfo
+    // should not happen, still protect
+    numOfMaintaining = 0;
+    n = currentValidatorSet.length;
+    for (uint i; i < n; ++i) {
+      validatorExtraSet[i].isMaintaining = false;
+      validatorExtraSet[i].enterMaintenanceHeight = 0;
+    }
   }
 
-  function doUpdateState(Validator[] memory validatorSet) private{
+  function getVoteAddresses(address[] memory validators) internal view returns(bytes[] memory) {
     uint n = currentValidatorSet.length;
-    uint m = validatorSet.length;
+    uint length = validators.length;
+    bytes[] memory voteAddrs = new bytes[](length);
 
-    for (uint i = 0;i<n;i++) {
-      bool stale = true;
-      Validator memory oldValidator = currentValidatorSet[i];
-      for (uint j = 0;j<m;j++) {
-        if (oldValidator.consensusAddress == validatorSet[j].consensusAddress) {
-          stale = false;
-          break;
-        }
+    // check if validatorExtraSet has been initialized
+    if (validatorExtraSet.length != n) {
+      return voteAddrs;
+    }
+
+    for (uint i; i<length; ++i) {
+      voteAddrs[i] = validatorExtraSet[currentValidatorSetMap[validators[i]]-1].voteAddress;
+    }
+    return voteAddrs;
+  }
+
+  function _misdemeanor(address validator) private returns (uint256) {
+    uint256 index = currentValidatorSetMap[validator];
+    if (index <= 0) {
+      return ~uint256(0);
+    }
+    // the actually index
+    index = index - 1;
+
+    uint256 income = currentValidatorSet[index].incoming;
+    currentValidatorSet[index].incoming = 0;
+    uint256 rest = currentValidatorSet.length - 1;
+    emit validatorMisdemeanor(validator, income);
+    if (rest == 0) {
+      // should not happen, but still protect
+      return index;
+    }
+    uint256 averageDistribute = income / rest;
+    if (averageDistribute != 0) {
+      for (uint i; i < index; ++i) {
+        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
       }
-      if (stale) {
-        delete currentValidatorSetMap[oldValidator.consensusAddress];
+      uint n = currentValidatorSet.length;
+      for (uint i = index + 1; i < n; ++i) {
+        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
       }
     }
+    // averageDistribute*rest may less than income, but it is ok, the dust income will go to system reward eventually.
 
-    if (n>m) {
-      for (uint i = m;i<n;i++) {
-        currentValidatorSet.pop();
+    return index;
+  }
+
+  function _felony(address validator, uint256 index) private returns (bool){
+    uint256 income = currentValidatorSet[index].incoming;
+    uint256 rest = currentValidatorSet.length - 1;
+    if (getValidators().length <= 1) {
+      // will not remove the validator if it is the only one validator.
+      currentValidatorSet[index].incoming = 0;
+      return false;
+    }
+    emit validatorFelony(validator, income);
+
+    // remove the validator from currentValidatorSet
+    delete currentValidatorSetMap[validator];
+    // remove felony validator
+    for (uint i = index;i < (currentValidatorSet.length-1);++i) {
+      currentValidatorSet[i] = currentValidatorSet[i+1];
+      validatorExtraSet[i] = validatorExtraSet[i+1];
+      currentValidatorSetMap[currentValidatorSet[i].consensusAddress] = i+1;
+    }
+    currentValidatorSet.pop();
+    validatorExtraSet.pop();
+
+    uint256 averageDistribute = income / rest;
+    if (averageDistribute != 0) {
+      uint n = currentValidatorSet.length;
+      for (uint i; i < n; ++i) {
+        currentValidatorSet[i].incoming = currentValidatorSet[i].incoming + averageDistribute;
       }
     }
-    uint k = n < m ? n:m;
-    for (uint i = 0;i<k;i++) {
-      if (!isSameValidator(validatorSet[i], currentValidatorSet[i])) {
-        currentValidatorSetMap[validatorSet[i].consensusAddress] = i+1;
-        currentValidatorSet[i] = validatorSet[i];
-      } else {
-        currentValidatorSet[i].incoming = 0;
+    // averageDistribute*rest may less than income, but it is ok, the dust income will go to system reward eventually.
+    return true;
+  }
+
+  function _forceMaintainingValidatorsExit(Validator[] memory _validatorSet, bytes[] memory _voteAddrs) private returns (Validator[] memory unjailedValidatorSet, bytes[] memory unjailedVoteAddrs){
+    uint256 numOfFelony = 0;
+    address validator;
+    bool isFelony;
+
+    // 1. validators exit maintenance
+    uint256 i;
+    // caution: it must calculate workingValidatorCount before _exitMaintenance loop
+    // because the workingValidatorCount will be changed in _exitMaintenance
+    uint256 workingValidatorCount = getWorkingValidatorCount();
+    // caution: it must loop from the endIndex to startIndex in currentValidatorSet
+    // because the validators order in currentValidatorSet may be changed by _felony(validator)
+    for (uint index = currentValidatorSet.length; index > 0; --index) {
+      i = index - 1;  // the actual index
+      if (!validatorExtraSet[i].isMaintaining) {
+        continue;
+      }
+
+      // only maintaining validators
+      validator = currentValidatorSet[i].consensusAddress;
+
+      // exit maintenance
+      isFelony = _exitMaintenance(validator, i, workingValidatorCount);
+      if (!isFelony || numOfFelony >= _validatorSet.length - 1) {
+        continue;
+      }
+
+      // record the jailed validator in validatorSet
+      for (uint k; k < _validatorSet.length; ++k) {
+        if (_validatorSet[k].consensusAddress == validator) {
+          _validatorSet[k].jailed = true;
+          numOfFelony++;
+          break;
+        }
       }
     }
-    if (m>n) {
-      for (uint i = n;i<m;i++) {
-        currentValidatorSet.push(validatorSet[i]);
-        currentValidatorSetMap[validatorSet[i].consensusAddress] = i+1;
+
+    // 2. get unjailed validators from validatorSet
+    unjailedValidatorSet = new Validator[](_validatorSet.length - numOfFelony);
+    unjailedVoteAddrs = new bytes[](_validatorSet.length - numOfFelony);
+    i = 0;
+    for (uint index; index < _validatorSet.length; ++index) {
+      if (!_validatorSet[index].jailed) {
+        unjailedValidatorSet[i] = _validatorSet[index];
+        unjailedVoteAddrs[i] = _voteAddrs[index];
+        i++;
       }
     }
+
+    return (unjailedValidatorSet, unjailedVoteAddrs);
+  }
+
+  function _enterMaintenance(address validator, uint256 index) private {
+    numOfMaintaining++;
+    validatorExtraSet[index].isMaintaining = true;
+    validatorExtraSet[index].enterMaintenanceHeight = block.number;
+    emit validatorEnterMaintenance(validator);
   }
 
-  function isSameValidator(Validator memory v1, Validator memory v2) private pure returns(bool) {
-    return v1.consensusAddress == v2.consensusAddress && v1.feeAddress == v2.feeAddress && v1.BBCFeeAddress == v2.BBCFeeAddress && v1.votingPower == v2.votingPower;
+  function _exitMaintenance(address validator, uint index, uint256 workingValidatorCount) private returns (bool isFelony){
+    if (maintainSlashScale == 0 || workingValidatorCount == 0 || numOfMaintaining == 0) {
+      // should not happen, still protect
+      return false;
+    }
+
+    // step 0: modify numOfMaintaining
+    numOfMaintaining--;
+
+    // step 1: calculate slashCount
+    uint256 slashCount =
+      block.number
+        .sub(validatorExtraSet[index].enterMaintenanceHeight)
+        .div(workingValidatorCount)
+        .div(maintainSlashScale);
+
+    // step 2: clear maintaining info of the validator
+    validatorExtraSet[index].isMaintaining = false;
+
+    // step3: slash the validator
+    (uint256 misdemeanorThreshold, uint256 felonyThreshold) = ISlashIndicator(SLASH_CONTRACT_ADDR).getSlashThresholds();
+    isFelony = false;
+    if (slashCount >= felonyThreshold) {
+      _felony(validator, index);
+      ISlashIndicator(SLASH_CONTRACT_ADDR).sendFelonyPackage(validator);
+      isFelony = true;
+    } else if (slashCount >= misdemeanorThreshold) {
+      _misdemeanor(validator);
+    }
+
+    emit validatorExitMaintenance(validator);
   }
 
   //rlp encode & decode function
-  function decodeValidatorSetSynPackage(bytes memory msgBytes) internal pure returns (IbcValidatorSetPackage memory, bool) {
+  function decodeValidatorSetSynPackage(bytes memory msgBytes) internal pure returns(IbcValidatorSetPackage memory, bool) {
     IbcValidatorSetPackage memory validatorSetPkg;
 
     RLPDecode.Iterator memory iter = msgBytes.toRLPItem().iterator();
@@ -500,13 +932,15 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
         validatorSetPkg.packageType = uint8(iter.next().toUint());
       } else if (idx == 1) {
         RLPDecode.RLPItem[] memory items = iter.next().toList();
-        validatorSetPkg.validatorSet =new Validator[](items.length);
-        for (uint j = 0;j<items.length;j++) {
-          (Validator memory val, bool ok) = decodeValidator(items[j]);
+        validatorSetPkg.validatorSet = new Validator[](items.length);
+        validatorSetPkg.voteAddrs = new bytes[](items.length);
+        for (uint j; j<items.length;++j) {
+          (Validator memory val, bytes memory voteAddr, bool ok) = decodeValidator(items[j]);
           if (!ok) {
             return (validatorSetPkg, false);
           }
           validatorSetPkg.validatorSet[j] = val;
+          validatorSetPkg.voteAddrs[j] = voteAddr;
         }
         success = true;
       } else {
@@ -517,8 +951,9 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
     return (validatorSetPkg, success);
   }
 
-  function decodeValidator(RLPDecode.RLPItem memory itemValidator) internal pure returns(Validator memory, bool) {
+  function decodeValidator(RLPDecode.RLPItem memory itemValidator) internal pure returns (Validator memory, bytes memory, bool) {
     Validator memory validator;
+    bytes memory voteAddr;
     RLPDecode.Iterator memory iter = itemValidator.iterator();
     bool success = false;
     uint256 idx=0;
@@ -532,11 +967,37 @@ contract BSCValidatorSet is IBSCValidatorSet, System, IParamSubscriber, IApplica
       } else if (idx == 3) {
         validator.votingPower = uint64(iter.next().toUint());
         success = true;
+      } else if (idx == 4) {
+        voteAddr = iter.next().toBytes();
+        success = true;
       } else {
         break;
       }
       idx++;
     }
-    return (validator, success);
+    return (validator, voteAddr, success);
   }
+
+    {% if mock %}
+
+  function isValidatorExist(address validator)external view returns(bool) {
+    uint256 index = currentValidatorSetMap[validator];
+    if (index<=0) {
+      return false;
+    }
+    return true;
+  }
+
+  function getMaintainingValidators() public view returns (address[] memory maintainingValidators) {
+    maintainingValidators = new address[](numOfMaintaining);
+    uint256 count = 0;
+    for (uint i = 0; i < currentValidatorSet.length; i++) {
+      if (validatorExtraSet[i].isMaintaining) {
+        maintainingValidators[count] = currentValidatorSet[i].consensusAddress;
+        count ++;
+      }
+    }
+  }
+
+    {% endif %}
 }
diff --git a/contracts/CrossChain.sol b/contracts/CrossChain.sol
index 53ede1eb..66aeaf90 100644
--- a/contracts/CrossChain.sol
+++ b/contracts/CrossChain.sol
@@ -11,7 +11,6 @@ import "./interface/IParamSubscriber.sol";
 import "./System.sol";
 import "./MerkleProof.sol";
 
-
 contract CrossChain is System, ICrossChain, IParamSubscriber{
 
   // constant variables
@@ -35,6 +34,9 @@ contract CrossChain is System, ICrossChain, IParamSubscriber{
   mapping(uint8 => uint64) public channelReceiveSequenceMap;
   mapping(uint8 => bool) public isRelayRewardFromSystemReward;
 
+  // to prevent the utilization of ancient block header
+  mapping(uint8 => uint64) public channelSyncedHeaderMap;
+
   // event
   event crossChainPackage(uint16 chainId, uint64 indexed oracleSequence, uint64 indexed packageSequence, uint8 indexed channelId, bytes payload);
   event receivedPackage(uint8 packageType, uint64 indexed packageSequence, uint8 indexed channelId);
@@ -68,6 +70,14 @@ contract CrossChain is System, ICrossChain, IParamSubscriber{
     _;
   }
 
+  modifier headerInOrder(uint64 height, uint8 channelId) {
+    require(height >= channelSyncedHeaderMap[channelId], "too old header");
+    if (height != channelSyncedHeaderMap[channelId]) {
+      channelSyncedHeaderMap[channelId] = height;
+    }
+    _;
+  }
+
   // | length   | prefix | sourceChainID| destinationChainID | channelID | sequence |
   // | 32 bytes | 1 byte | 2 bytes      | 2 bytes            |  1 bytes  | 8 bytes  |
   function generateKey(uint64 _sequence, uint8 _channelID) internal pure returns(bytes memory) {
@@ -127,7 +137,7 @@ contract CrossChain is System, ICrossChain, IParamSubscriber{
     alreadyInit=true;
   }
 
-function encodePayload(uint8 packageType, uint256 relayFee, bytes memory msgBytes) public pure returns(bytes memory) {
+  function encodePayload(uint8 packageType, uint256 relayFee, bytes memory msgBytes) public pure returns(bytes memory) {
     uint256 payloadLength = msgBytes.length + 33;
     bytes memory payload = new bytes(payloadLength);
     uint256 ptr;
@@ -189,21 +199,22 @@ function encodePayload(uint8 packageType, uint256 relayFee, bytes memory msgByte
     return (true, packageType, relayFee, msgBytes);
   }
 
-  function handlePackage(bytes calldata payload, bytes calldata proof, uint64 height, uint64 packageSequence, uint8 channelId) onlyInit onlyRelayer
-      sequenceInOrder(packageSequence, channelId) blockSynced(height) channelSupported(channelId) external {
+  function handlePackage(bytes calldata payload, bytes calldata proof, uint64 height, uint64 packageSequence, uint8 channelId) onlyInit onlyRelayer onlyWhitelabelRelayer
+      sequenceInOrder(packageSequence, channelId) blockSynced(height) channelSupported(channelId) headerInOrder(height, channelId) external {
     bytes memory payloadLocal = payload; // fix error: stack too deep, try removing local variables
     bytes memory proofLocal = proof; // fix error: stack too deep, try removing local variables
     require(MerkleProof.validateMerkleProof(ILightClient(LIGHT_CLIENT_ADDR).getAppHash(height), STORE_NAME, generateKey(packageSequence, channelId), payloadLocal, proofLocal), "invalid merkle proof");
 
     address payable headerRelayer = ILightClient(LIGHT_CLIENT_ADDR).getSubmitter(height);
 
+    uint64 sequenceLocal = packageSequence; // fix error: stack too deep, try removing local variables
     uint8 channelIdLocal = channelId; // fix error: stack too deep, try removing local variables
     (bool success, uint8 packageType, uint256 relayFee, bytes memory msgBytes) = decodePayloadHeader(payloadLocal);
     if (!success) {
-      emit unsupportedPackage(packageSequence, channelIdLocal, payloadLocal);
+      emit unsupportedPackage(sequenceLocal, channelIdLocal, payloadLocal);
       return;
     }
-    emit receivedPackage(packageType, packageSequence, channelIdLocal);
+    emit receivedPackage(packageType, sequenceLocal, channelIdLocal);
     if (packageType == SYN_PACKAGE) {
       address handlerContract = channelHandlerContractMap[channelIdLocal];
       try IApplication(handlerContract).handleSynPackage(channelIdLocal, msgBytes) returns (bytes memory responsePayload) {
@@ -315,4 +326,4 @@ function encodePayload(uint8 packageType, uint256 relayFee, bytes memory msgByte
     }
     emit paramChange(key, value);
   }
-}
\ No newline at end of file
+}
diff --git a/contracts/CrossChain.template b/contracts/CrossChain.template
index c363268a..0e9a6653 100644
--- a/contracts/CrossChain.template
+++ b/contracts/CrossChain.template
@@ -9,9 +9,7 @@ import "./lib/Memory.sol";
 import "./lib/BytesToTypes.sol";
 import "./interface/IParamSubscriber.sol";
 import "./System.sol";
-{% if mock %}import "./mock/MerkleProof.sol";
-{% else %}import "./MerkleProof.sol";
-{% endif %}
+import "./MerkleProof.sol";
 
 contract CrossChain is System, ICrossChain, IParamSubscriber{
 
@@ -36,6 +34,9 @@ contract CrossChain is System, ICrossChain, IParamSubscriber{
   mapping(uint8 => uint64) public channelReceiveSequenceMap;
   mapping(uint8 => bool) public isRelayRewardFromSystemReward;
 
+  // to prevent the utilization of ancient block header
+  mapping(uint8 => uint64) public channelSyncedHeaderMap;
+
   // event
   event crossChainPackage(uint16 chainId, uint64 indexed oracleSequence, uint64 indexed packageSequence, uint8 indexed channelId, bytes payload);
   event receivedPackage(uint8 packageType, uint64 indexed packageSequence, uint8 indexed channelId);
@@ -69,6 +70,14 @@ contract CrossChain is System, ICrossChain, IParamSubscriber{
     _;
   }
 
+  modifier headerInOrder(uint64 height, uint8 channelId) {
+    require(height >= channelSyncedHeaderMap[channelId], "too old header");
+    if (height != channelSyncedHeaderMap[channelId]) {
+      channelSyncedHeaderMap[channelId] = height;
+    }
+    _;
+  }
+
   // | length   | prefix | sourceChainID| destinationChainID | channelID | sequence |
   // | 32 bytes | 1 byte | 2 bytes      | 2 bytes            |  1 bytes  | 8 bytes  |
   function generateKey(uint64 _sequence, uint8 _channelID) internal pure returns(bytes memory) {
@@ -128,7 +137,7 @@ contract CrossChain is System, ICrossChain, IParamSubscriber{
     alreadyInit=true;
   }
 
-function encodePayload(uint8 packageType, uint256 relayFee, bytes memory msgBytes) public pure returns(bytes memory) {
+  function encodePayload(uint8 packageType, uint256 relayFee, bytes memory msgBytes) public pure returns(bytes memory) {
     uint256 payloadLength = msgBytes.length + 33;
     bytes memory payload = new bytes(payloadLength);
     uint256 ptr;
@@ -190,21 +199,22 @@ function encodePayload(uint8 packageType, uint256 relayFee, bytes memory msgByte
     return (true, packageType, relayFee, msgBytes);
   }
 
-  function handlePackage(bytes calldata payload, bytes calldata proof, uint64 height, uint64 packageSequence, uint8 channelId) onlyInit onlyRelayer
-      sequenceInOrder(packageSequence, channelId) blockSynced(height) channelSupported(channelId) external {
+  function handlePackage(bytes calldata payload, bytes calldata proof, uint64 height, uint64 packageSequence, uint8 channelId) onlyInit onlyRelayer onlyWhitelabelRelayer
+      sequenceInOrder(packageSequence, channelId) blockSynced(height) channelSupported(channelId) headerInOrder(height, channelId) external {
     bytes memory payloadLocal = payload; // fix error: stack too deep, try removing local variables
     bytes memory proofLocal = proof; // fix error: stack too deep, try removing local variables
     require(MerkleProof.validateMerkleProof(ILightClient(LIGHT_CLIENT_ADDR).getAppHash(height), STORE_NAME, generateKey(packageSequence, channelId), payloadLocal, proofLocal), "invalid merkle proof");
 
     address payable headerRelayer = ILightClient(LIGHT_CLIENT_ADDR).getSubmitter(height);
 
+    uint64 sequenceLocal = packageSequence; // fix error: stack too deep, try removing local variables
     uint8 channelIdLocal = channelId; // fix error: stack too deep, try removing local variables
     (bool success, uint8 packageType, uint256 relayFee, bytes memory msgBytes) = decodePayloadHeader(payloadLocal);
     if (!success) {
-      emit unsupportedPackage(packageSequence, channelIdLocal, payloadLocal);
+      emit unsupportedPackage(sequenceLocal, channelIdLocal, payloadLocal);
       return;
     }
-    emit receivedPackage(packageType, packageSequence, channelIdLocal);
+    emit receivedPackage(packageType, sequenceLocal, channelIdLocal);
     if (packageType == SYN_PACKAGE) {
       address handlerContract = channelHandlerContractMap[channelIdLocal];
       try IApplication(handlerContract).handleSynPackage(channelIdLocal, msgBytes) returns (bytes memory responsePayload) {
@@ -316,4 +326,4 @@ function encodePayload(uint8 packageType, uint256 relayFee, bytes memory msgByte
     }
     emit paramChange(key, value);
   }
-}
\ No newline at end of file
+}
diff --git a/contracts/Migrations.sol b/contracts/Migrations.sol
deleted file mode 100644
index ab55d35c..00000000
--- a/contracts/Migrations.sol
+++ /dev/null
@@ -1,18 +0,0 @@
-pragma solidity 0.6.4;
-
-contract Migrations {
-  address public owner;
-  uint public last_completed_migration;
-
-  constructor() public {
-    owner = msg.sender;
-  }
-
-  modifier restricted() {
-    if (msg.sender == owner) _;
-  }
-
-  function setCompleted(uint completed) public restricted {
-    last_completed_migration = completed;
-  }
-}
diff --git a/contracts/RelayerHub.sol b/contracts/RelayerHub.sol
index a2fe99c7..6a714943 100644
--- a/contracts/RelayerHub.sol
+++ b/contracts/RelayerHub.sol
@@ -57,10 +57,7 @@ contract RelayerHub is IRelayerHub, System, IParamSubscriber{
   }
 
   function register() external payable noExist onlyInit notContract noProxy{
-    require(msg.value == requiredDeposit, "deposit value is not exactly the same");
-    relayers[msg.sender] = relayer(requiredDeposit, dues);
-    relayersExistMap[msg.sender] = true;
-    emit relayerRegister(msg.sender);
+    revert("register suspended");
   }
 
   function  unregister() external exist onlyInit{
diff --git a/contracts/RelayerHub.template b/contracts/RelayerHub.template
new file mode 100644
index 00000000..6a714943
--- /dev/null
+++ b/contracts/RelayerHub.template
@@ -0,0 +1,94 @@
+pragma solidity 0.6.4;
+
+import "./lib/BytesToTypes.sol";
+import "./lib/Memory.sol";
+import "./interface/IRelayerHub.sol";
+import "./interface/IParamSubscriber.sol";
+import "./System.sol";
+import "./lib/SafeMath.sol";
+
+
+contract RelayerHub is IRelayerHub, System, IParamSubscriber{
+  using SafeMath for uint256;
+
+  uint256 public constant INIT_REQUIRED_DEPOSIT =  1e20;
+  uint256 public constant INIT_DUES =  1e17;
+
+  uint256 public requiredDeposit;
+  uint256 public dues;
+
+  mapping(address =>relayer) relayers;
+  mapping(address =>bool) relayersExistMap;
+
+  struct relayer{
+    uint256 deposit;
+    uint256  dues;
+  }
+
+  modifier notContract() {
+    require(!isContract(msg.sender), "contract is not allowed to be a relayer");
+    _;
+  }
+
+  modifier noProxy() {
+    require(msg.sender == tx.origin, "no proxy is allowed");
+    _;
+  }
+
+  modifier noExist() {
+    require(!relayersExistMap[msg.sender], "relayer already exist");
+    _;
+  }
+
+  modifier exist() {
+    require(relayersExistMap[msg.sender], "relayer do not exist");
+    _;
+  }
+
+  event relayerRegister(address _relayer);
+  event relayerUnRegister(address _relayer);
+  event paramChange(string key, bytes value);
+
+
+  function init() external onlyNotInit{
+    requiredDeposit = INIT_REQUIRED_DEPOSIT;
+    dues = INIT_DUES;
+    alreadyInit = true;
+  }
+
+  function register() external payable noExist onlyInit notContract noProxy{
+    revert("register suspended");
+  }
+
+  function  unregister() external exist onlyInit{
+    relayer memory r = relayers[msg.sender];
+    msg.sender.transfer(r.deposit.sub(r.dues));
+    address payable systemPayable = address(uint160(SYSTEM_REWARD_ADDR));
+    systemPayable.transfer(r.dues);
+    delete relayersExistMap[msg.sender];
+    delete relayers[msg.sender];
+    emit relayerUnRegister(msg.sender);
+  }
+
+  /*********************** Param update ********************************/
+  function updateParam(string calldata key, bytes calldata value) external override onlyInit onlyGov{
+    if (Memory.compareStrings(key,"requiredDeposit")) {
+      require(value.length == 32, "length of requiredDeposit mismatch");
+      uint256 newRequiredDeposit = BytesToTypes.bytesToUint256(32, value);
+      require(newRequiredDeposit > 1 && newRequiredDeposit <= 1e21 && newRequiredDeposit > dues, "the requiredDeposit out of range");
+      requiredDeposit = newRequiredDeposit;
+    } else if (Memory.compareStrings(key,"dues")) {
+      require(value.length == 32, "length of dues mismatch");
+      uint256 newDues = BytesToTypes.bytesToUint256(32, value);
+      require(newDues > 0 && newDues < requiredDeposit, "the dues out of range");
+      dues = newDues;
+    } else {
+      require(false, "unknown param");
+    }
+    emit paramChange(key, value);
+  }
+
+  function isRelayer(address sender) external override view returns (bool) {
+    return relayersExistMap[sender];
+  }
+}
diff --git a/contracts/RelayerIncentivize.sol b/contracts/RelayerIncentivize.sol
index 345df464..47ae46b2 100644
--- a/contracts/RelayerIncentivize.sol
+++ b/contracts/RelayerIncentivize.sol
@@ -56,9 +56,7 @@ contract RelayerIncentivize is IRelayerIncentivize, System, IParamSubscriber {
 
   receive() external payable{}
 
-  
   function addReward(address payable headerRelayerAddr, address payable packageRelayer, uint256 amount, bool fromSystemReward) onlyInit onlyCrossChainContract external override returns (bool) {
-  
     uint256 actualAmount;
     if (fromSystemReward) {
       actualAmount = ISystemReward(SYSTEM_REWARD_ADDR).claimRewards(address(uint160(INCENTIVIZE_ADDR)), amount.add(dynamicExtraIncentiveAmount));
diff --git a/contracts/RelayerIncentivize.template b/contracts/RelayerIncentivize.template
index 9e0b8465..9df2abab 100644
--- a/contracts/RelayerIncentivize.template
+++ b/contracts/RelayerIncentivize.template
@@ -56,11 +56,7 @@ contract RelayerIncentivize is IRelayerIncentivize, System, IParamSubscriber {
 
   receive() external payable{}
 
-  {% if mock %}
-  function addReward(address payable headerRelayerAddr, address payable packageRelayer, uint256 amount, bool fromSystemReward) external override returns (bool) {
-  {% else %}
   function addReward(address payable headerRelayerAddr, address payable packageRelayer, uint256 amount, bool fromSystemReward) onlyInit onlyCrossChainContract external override returns (bool) {
-  {% endif %}
     uint256 actualAmount;
     if (fromSystemReward) {
       actualAmount = ISystemReward(SYSTEM_REWARD_ADDR).claimRewards(address(uint160(INCENTIVIZE_ADDR)), amount.add(dynamicExtraIncentiveAmount));
diff --git a/contracts/SlashIndicator.sol b/contracts/SlashIndicator.sol
index f20269b6..7517983b 100644
--- a/contracts/SlashIndicator.sol
+++ b/contracts/SlashIndicator.sol
@@ -1,12 +1,17 @@
 pragma solidity 0.6.4;
+pragma experimental ABIEncoderV2;
+
 import "./System.sol";
 import "./lib/BytesToTypes.sol";
+import "./lib/TypesToBytes.sol";
+import "./lib/BytesLib.sol";
 import "./lib/Memory.sol";
 import "./interface/ISlashIndicator.sol";
 import "./interface/IApplication.sol";
 import "./interface/IBSCValidatorSet.sol";
 import "./interface/IParamSubscriber.sol";
 import "./interface/ICrossChain.sol";
+import "./interface/ISystemReward.sol";
 import "./lib/CmnPkg.sol";
 import "./lib/RLPEncode.sol";
 
@@ -22,9 +27,17 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
   address[] public validators;
   mapping(address => Indicator) public indicators;
   uint256 public previousHeight;
+
+  // The BSC validators assign proper values for `misdemeanorThreshold` and `felonyThreshold` through governance.
+  // The proper values depends on BSC network's tolerance for continuous missing blocks.
   uint256 public  misdemeanorThreshold;
   uint256 public  felonyThreshold;
 
+  // BEP-126 Fast Finality
+  uint256 public constant INIT_FINALITY_SLASH_REWARD_RATIO = 20;
+
+  uint256 public finalitySlashRewardRatio;
+
   event validatorSlashed(address indexed validator);
   event indicatorCleaned();
   event paramChange(string key, bytes value);
@@ -39,6 +52,21 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
     bool exist;
   }
 
+  // Proof that a validator misbehaved in fast finality
+  struct VoteData {
+    uint256 srcNum;
+    bytes32 srcHash;
+    uint256 tarNum;
+    bytes32 tarHash;
+    bytes sig;
+  }
+
+  struct FinalityEvidence {
+    VoteData voteA;
+    VoteData voteB;
+    bytes voteAddr;
+  }
+
   modifier oncePerBlock() {
     require(block.number > previousHeight, "can not slash twice in one block");
     _;
@@ -80,6 +108,9 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
 
   /*********************** External func ********************************/
   function slash(address validator) external onlyCoinbase onlyInit oncePerBlock onlyZeroGasPrice{
+    if (!IBSCValidatorSet(VALIDATOR_CONTRACT_ADDR).isCurrentValidator(validator)) {
+      return;
+    }
     Indicator memory indicator = indicators[validator];
     if (indicator.exist) {
       indicator.count++;
@@ -100,7 +131,6 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
     emit validatorSlashed(validator);
   }
 
-
   // To prevent validator misbehaving and leaving, do not clean slash record to zero, but decrease by felonyThreshold/DECREASE_RATE .
   // Clean is an effective implement to reorganize "validators" and "indicators".
   function clean() external override(ISlashIndicator) onlyValidatorContract onlyInit{
@@ -155,6 +185,88 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
     emit indicatorCleaned();
   }
 
+  function submitFinalityViolationEvidence(FinalityEvidence memory _evidence) public onlyInit onlyRelayer {
+    if (finalitySlashRewardRatio == 0) {
+      finalitySlashRewardRatio = INIT_FINALITY_SLASH_REWARD_RATIO;
+    }
+
+    // Basic check
+    require(_evidence.voteA.srcNum+256 > block.number &&
+      _evidence.voteB.srcNum+256 > block.number, "too old block involved");
+    require(!(_evidence.voteA.srcHash == _evidence.voteB.srcHash &&
+      _evidence.voteA.tarHash == _evidence.voteB.tarHash), "two identical votes");
+    require(_evidence.voteA.srcNum < _evidence.voteA.tarNum &&
+      _evidence.voteB.srcNum < _evidence.voteB.tarNum, "srcNum bigger than tarNum");
+
+    // Vote rules check
+    require((_evidence.voteA.srcNum<_evidence.voteB.srcNum && _evidence.voteB.tarNum<_evidence.voteA.tarNum) ||
+      (_evidence.voteB.srcNum<_evidence.voteA.srcNum && _evidence.voteA.tarNum<_evidence.voteB.tarNum) ||
+      _evidence.voteA.tarNum == _evidence.voteB.tarNum, "no violation of vote rules");
+
+    // BLS verification
+    (address[] memory vals, bytes[] memory voteAddrs) = IBSCValidatorSet(VALIDATOR_CONTRACT_ADDR).getLivingValidators();
+    address valAddr;
+    bytes memory voteAddr = _evidence.voteAddr;
+    for (uint i; i < voteAddrs.length; ++i) {
+      if (BytesLib.equal(voteAddrs[i],  voteAddr)) {
+        valAddr = vals[i];
+        break;
+      }
+    }
+    require(valAddr != address(0), "validator not exist");
+
+    require(verifyBLSSignature(_evidence.voteA, _evidence.voteAddr) &&
+      verifyBLSSignature(_evidence.voteB, _evidence.voteAddr), "verify signature failed");
+
+    uint256 amount = (address(SYSTEM_REWARD_ADDR).balance * finalitySlashRewardRatio) / 100;
+    ISystemReward(SYSTEM_REWARD_ADDR).claimRewards(msg.sender, amount);
+    IBSCValidatorSet(VALIDATOR_CONTRACT_ADDR).felony(valAddr);
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(SLASH_CHANNELID, encodeSlashPackage(valAddr), 0);
+    emit validatorSlashed(valAddr);
+  }
+
+  function sendFelonyPackage(address validator) external override(ISlashIndicator) onlyValidatorContract onlyInit {
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(SLASH_CHANNELID, encodeSlashPackage(validator), 0);
+  }
+
+  function verifyBLSSignature(VoteData memory vote, bytes memory voteAddr) internal view returns(bool) {
+    bytes[] memory elements = new bytes[](4);
+    bytes memory _bytes = new bytes(32);
+    elements[0] = vote.srcNum.encodeUint();
+    TypesToBytes.bytes32ToBytes(32, vote.srcHash, _bytes);
+    elements[1] = _bytes.encodeBytes();
+    elements[2] = vote.tarNum.encodeUint();
+    TypesToBytes.bytes32ToBytes(32, vote.tarHash, _bytes);
+    elements[3] = _bytes.encodeBytes();
+
+    TypesToBytes.bytes32ToBytes(32, keccak256(elements.encodeList()), _bytes);
+
+    // assemble input data
+    bytes memory input = new bytes(176);
+    bytesConcat(input, _bytes, 0, 32);
+    bytesConcat(input, vote.sig, 32, 96);
+    bytesConcat(input, voteAddr, 128, 48);
+
+    // call the precompiled contract to verify the BLS signature
+    // the precompiled contract's address is 0x66
+    bytes memory output = new bytes(1);
+    assembly {
+      let len := mload(input)
+      if iszero(staticcall(not(0), 0x66, add(input, 0x20), len, add(output, 0x20), 0x01)) {
+        revert(0, 0)
+      }
+    }
+    if (BytesLib.toUint8(output, 0) != uint8(1)) {
+      return false;
+    }
+    return true;
+  }
+
+  function bytesConcat(bytes memory data, bytes memory _bytes, uint256 index, uint256 len) internal pure {
+    for (uint i; i<len; ++i) {
+      data[index++] = _bytes[i];
+    }
+  }
 
   /*********************** Param update ********************************/
   function updateParam(string calldata key, bytes calldata value) external override onlyInit onlyGov{
@@ -168,6 +280,11 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
       uint256 newFelonyThreshold = BytesToTypes.bytesToUint256(32, value);
       require(newFelonyThreshold <= 1000 && newFelonyThreshold > misdemeanorThreshold, "the felonyThreshold out of range");
       felonyThreshold = newFelonyThreshold;
+    } else if (Memory.compareStrings(key, "finalitySlashRewardRatio")) {
+      require(value.length == 32, "length of finalitySlashRewardRatio mismatch");
+      uint256 newFinalitySlashRewardRatio = BytesToTypes.bytesToUint256(32, value);
+      require(newFinalitySlashRewardRatio >= 10 && newFinalitySlashRewardRatio < 100, "the finality slash reward ratio out of range");
+      finalitySlashRewardRatio = newFinalitySlashRewardRatio;
     } else {
       require(false, "unknown param");
     }
@@ -188,4 +305,8 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
     elements[3] = uint256(block.timestamp).encodeUint();
     return elements.encodeList();
   }
-}
\ No newline at end of file
+
+  function getSlashThresholds() override(ISlashIndicator) external view returns (uint256, uint256) {
+    return (misdemeanorThreshold, felonyThreshold);
+  }
+}
diff --git a/contracts/SlashIndicator.template b/contracts/SlashIndicator.template
index f1e9ad32..3f1f5613 100644
--- a/contracts/SlashIndicator.template
+++ b/contracts/SlashIndicator.template
@@ -1,12 +1,17 @@
 pragma solidity 0.6.4;
+pragma experimental ABIEncoderV2;
+
 import "./System.sol";
 import "./lib/BytesToTypes.sol";
+import "./lib/TypesToBytes.sol";
+import "./lib/BytesLib.sol";
 import "./lib/Memory.sol";
 import "./interface/ISlashIndicator.sol";
 import "./interface/IApplication.sol";
 import "./interface/IBSCValidatorSet.sol";
 import "./interface/IParamSubscriber.sol";
 import "./interface/ICrossChain.sol";
+import "./interface/ISystemReward.sol";
 import "./lib/CmnPkg.sol";
 import "./lib/RLPEncode.sol";
 
@@ -22,9 +27,17 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
   address[] public validators;
   mapping(address => Indicator) public indicators;
   uint256 public previousHeight;
+
+  // The BSC validators assign proper values for `misdemeanorThreshold` and `felonyThreshold` through governance.
+  // The proper values depends on BSC network's tolerance for continuous missing blocks.
   uint256 public  misdemeanorThreshold;
   uint256 public  felonyThreshold;
 
+  // BEP-126 Fast Finality
+  uint256 public constant INIT_FINALITY_SLASH_REWARD_RATIO = 20;
+
+  uint256 public finalitySlashRewardRatio;
+
   event validatorSlashed(address indexed validator);
   event indicatorCleaned();
   event paramChange(string key, bytes value);
@@ -39,6 +52,21 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
     bool exist;
   }
 
+  // Proof that a validator misbehaved in fast finality
+  struct VoteData {
+    uint256 srcNum;
+    bytes32 srcHash;
+    uint256 tarNum;
+    bytes32 tarHash;
+    bytes sig;
+  }
+
+  struct FinalityEvidence {
+    VoteData voteA;
+    VoteData voteB;
+    bytes voteAddr;
+  }
+
   modifier oncePerBlock() {
     require(block.number > previousHeight, "can not slash twice in one block");
     _;
@@ -85,6 +113,9 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
 
   /*********************** External func ********************************/
   function slash(address validator) external onlyCoinbase onlyInit oncePerBlock onlyZeroGasPrice{
+    if (!IBSCValidatorSet(VALIDATOR_CONTRACT_ADDR).isCurrentValidator(validator)) {
+      return;
+    }
     Indicator memory indicator = indicators[validator];
     if (indicator.exist) {
       indicator.count++;
@@ -105,7 +136,6 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
     emit validatorSlashed(validator);
   }
 
-
   // To prevent validator misbehaving and leaving, do not clean slash record to zero, but decrease by felonyThreshold/DECREASE_RATE .
   // Clean is an effective implement to reorganize "validators" and "indicators".
   function clean() external override(ISlashIndicator) onlyValidatorContract onlyInit{
@@ -160,6 +190,88 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
     emit indicatorCleaned();
   }
 
+  function submitFinalityViolationEvidence(FinalityEvidence memory _evidence) public onlyInit onlyRelayer {
+    if (finalitySlashRewardRatio == 0) {
+      finalitySlashRewardRatio = INIT_FINALITY_SLASH_REWARD_RATIO;
+    }
+
+    // Basic check
+    require(_evidence.voteA.srcNum+256 > block.number &&
+      _evidence.voteB.srcNum+256 > block.number, "too old block involved");
+    require(!(_evidence.voteA.srcHash == _evidence.voteB.srcHash &&
+      _evidence.voteA.tarHash == _evidence.voteB.tarHash), "two identical votes");
+    require(_evidence.voteA.srcNum < _evidence.voteA.tarNum &&
+      _evidence.voteB.srcNum < _evidence.voteB.tarNum, "srcNum bigger than tarNum");
+
+    // Vote rules check
+    require((_evidence.voteA.srcNum<_evidence.voteB.srcNum && _evidence.voteB.tarNum<_evidence.voteA.tarNum) ||
+      (_evidence.voteB.srcNum<_evidence.voteA.srcNum && _evidence.voteA.tarNum<_evidence.voteB.tarNum) ||
+      _evidence.voteA.tarNum == _evidence.voteB.tarNum, "no violation of vote rules");
+
+    // BLS verification
+    (address[] memory vals, bytes[] memory voteAddrs) = IBSCValidatorSet(VALIDATOR_CONTRACT_ADDR).getLivingValidators();
+    address valAddr;
+    bytes memory voteAddr = _evidence.voteAddr;
+    for (uint i; i < voteAddrs.length; ++i) {
+      if (BytesLib.equal(voteAddrs[i],  voteAddr)) {
+        valAddr = vals[i];
+        break;
+      }
+    }
+    require(valAddr != address(0), "validator not exist");
+{% if mock %}{% else %}
+    require(verifyBLSSignature(_evidence.voteA, _evidence.voteAddr) &&
+      verifyBLSSignature(_evidence.voteB, _evidence.voteAddr), "verify signature failed");
+{% endif %}
+    uint256 amount = (address(SYSTEM_REWARD_ADDR).balance * finalitySlashRewardRatio) / 100;
+    ISystemReward(SYSTEM_REWARD_ADDR).claimRewards(msg.sender, amount);
+    IBSCValidatorSet(VALIDATOR_CONTRACT_ADDR).felony(valAddr);
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(SLASH_CHANNELID, encodeSlashPackage(valAddr), 0);
+    emit validatorSlashed(valAddr);
+  }
+
+  function sendFelonyPackage(address validator) external override(ISlashIndicator) onlyValidatorContract onlyInit {
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(SLASH_CHANNELID, encodeSlashPackage(validator), 0);
+  }
+
+  function verifyBLSSignature(VoteData memory vote, bytes memory voteAddr) internal view returns(bool) {
+    bytes[] memory elements = new bytes[](4);
+    bytes memory _bytes = new bytes(32);
+    elements[0] = vote.srcNum.encodeUint();
+    TypesToBytes.bytes32ToBytes(32, vote.srcHash, _bytes);
+    elements[1] = _bytes.encodeBytes();
+    elements[2] = vote.tarNum.encodeUint();
+    TypesToBytes.bytes32ToBytes(32, vote.tarHash, _bytes);
+    elements[3] = _bytes.encodeBytes();
+
+    TypesToBytes.bytes32ToBytes(32, keccak256(elements.encodeList()), _bytes);
+
+    // assemble input data
+    bytes memory input = new bytes(176);
+    bytesConcat(input, _bytes, 0, 32);
+    bytesConcat(input, vote.sig, 32, 96);
+    bytesConcat(input, voteAddr, 128, 48);
+
+    // call the precompiled contract to verify the BLS signature
+    // the precompiled contract's address is 0x66
+    bytes memory output = new bytes(1);
+    assembly {
+      let len := mload(input)
+      if iszero(staticcall(not(0), 0x66, add(input, 0x20), len, add(output, 0x20), 0x01)) {
+        revert(0, 0)
+      }
+    }
+    if (BytesLib.toUint8(output, 0) != uint8(1)) {
+      return false;
+    }
+    return true;
+  }
+
+  function bytesConcat(bytes memory data, bytes memory _bytes, uint256 index, uint256 len) internal pure {
+    for (uint i; i<len; ++i) {
+      data[index++] = _bytes[i];
+    }
+  }
 
   /*********************** Param update ********************************/
   function updateParam(string calldata key, bytes calldata value) external override onlyInit onlyGov{
@@ -173,6 +285,11 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
       uint256 newFelonyThreshold = BytesToTypes.bytesToUint256(32, value);
       require(newFelonyThreshold <= 1000 && newFelonyThreshold > misdemeanorThreshold, "the felonyThreshold out of range");
       felonyThreshold = newFelonyThreshold;
+    } else if (Memory.compareStrings(key, "finalitySlashRewardRatio")) {
+      require(value.length == 32, "length of finalitySlashRewardRatio mismatch");
+      uint256 newFinalitySlashRewardRatio = BytesToTypes.bytesToUint256(32, value);
+      require(newFinalitySlashRewardRatio >= 10 && newFinalitySlashRewardRatio < 100, "the finality slash reward ratio out of range");
+      finalitySlashRewardRatio = newFinalitySlashRewardRatio;
     } else {
       require(false, "unknown param");
     }
@@ -193,4 +310,8 @@ contract SlashIndicator is ISlashIndicator,System,IParamSubscriber, IApplication
     elements[3] = uint256(block.timestamp).encodeUint();
     return elements.encodeList();
   }
-}
\ No newline at end of file
+
+  function getSlashThresholds() override(ISlashIndicator) external view returns (uint256, uint256) {
+    return (misdemeanorThreshold, felonyThreshold);
+  }
+}
diff --git a/contracts/Staking.sol b/contracts/Staking.sol
new file mode 100644
index 00000000..23366221
--- /dev/null
+++ b/contracts/Staking.sol
@@ -0,0 +1,682 @@
+pragma solidity 0.6.4;
+
+import "./System.sol";
+import "./interface/IApplication.sol";
+import "./interface/ICrossChain.sol";
+import "./interface/IParamSubscriber.sol";
+import "./interface/IStaking.sol";
+import "./interface/ITokenHub.sol";
+import "./lib/BytesToTypes.sol";
+import "./lib/BytesLib.sol";
+import "./lib/CmnPkg.sol";
+import "./lib/Memory.sol";
+import "./lib/RLPEncode.sol";
+import "./lib/RLPDecode.sol";
+import "./lib/SafeMath.sol";
+
+
+contract Staking is IStaking, System, IParamSubscriber, IApplication {
+  using SafeMath for uint256;
+  using RLPEncode for *;
+  using RLPDecode for *;
+
+  // Cross Stake Event type
+  uint8 public constant EVENT_DELEGATE = 0x01;
+  uint8 public constant EVENT_UNDELEGATE = 0x02;
+  uint8 public constant EVENT_REDELEGATE = 0x03;
+  uint8 public constant EVENT_DISTRIBUTE_REWARD = 0x04;
+  uint8 public constant EVENT_DISTRIBUTE_UNDELEGATED = 0x05;
+
+  // ack package status code
+  uint8 public constant CODE_FAILED = 0;
+  uint8 public constant CODE_SUCCESS = 1;
+
+  // Error code
+  uint32 public constant ERROR_WITHDRAW_BNB = 101;
+
+  uint256 public constant TEN_DECIMALS = 1e10;
+  uint256 public constant LOCK_TIME = 8 days; // 8*24*3600 second
+
+  uint256 public constant INIT_RELAYER_FEE = 16 * 1e15;
+  uint256 public constant INIT_BSC_RELAYER_FEE = 1 * 1e16;
+  uint256 public constant INIT_MIN_DELEGATION = 100 * 1e18;
+  uint256 public constant INIT_TRANSFER_GAS = 2300;
+
+  uint256 public relayerFee;
+  uint256 public bSCRelayerFee;
+  uint256 public minDelegation;
+
+  mapping(address => uint256) delegated; // delegator => totalAmount
+  mapping(address => mapping(address => uint256)) delegatedOfValidator; // delegator => validator => amount
+  mapping(address => uint256) distributedReward; // delegator => reward
+  mapping(address => mapping(address => uint256)) pendingUndelegateTime; // delegator => validator => minTime
+  mapping(address => uint256) undelegated; // delegator => totalUndelegated
+  mapping(address => mapping(address => mapping(address => uint256))) pendingRedelegateTime; // delegator => srcValidator => dstValidator => minTime
+
+  mapping(uint256 => bytes32) packageQueue; // index => package's hash
+  mapping(address => uint256) delegateInFly; // delegator => delegate request in fly
+  mapping(address => uint256) undelegateInFly; // delegator => undelegate request in fly
+  mapping(address => uint256) redelegateInFly; // delegator => redelegate request in fly
+
+  uint256 internal leftIndex;
+  uint256 internal rightIndex;
+  uint8 internal locked;
+
+  uint256 public transferGas; // this param is newly added after the hardfork on testnet. It need to be initialed by governed
+
+  modifier noReentrant() {
+    require(locked != 2, "No re-entrancy");
+    locked = 2;
+    _;
+    locked = 1;
+  }
+
+  modifier tenDecimalPrecision(uint256 amount) {
+    require(msg.value%TEN_DECIMALS==0 && amount%TEN_DECIMALS==0, "precision loss in conversion");
+    _;
+  }
+
+  modifier initParams() {
+    if (!alreadyInit) {
+      relayerFee = INIT_RELAYER_FEE;
+      bSCRelayerFee = INIT_BSC_RELAYER_FEE;
+      minDelegation = INIT_MIN_DELEGATION;
+      transferGas = INIT_TRANSFER_GAS;
+      alreadyInit = true;
+    }
+    _;
+  }
+
+  /*********************************** Events **********************************/
+  event delegateSubmitted(address indexed delegator, address indexed validator, uint256 amount, uint256 relayerFee);
+  event undelegateSubmitted(address indexed delegator, address indexed validator, uint256 amount, uint256 relayerFee);
+  event redelegateSubmitted(address indexed delegator, address indexed validatorSrc, address indexed validatorDst, uint256 amount, uint256 relayerFee);
+  event rewardReceived(address indexed delegator, uint256 amount);
+  event rewardClaimed(address indexed delegator, uint256 amount);
+  event undelegatedReceived(address indexed delegator, address indexed validator, uint256 amount);
+  event undelegatedClaimed(address indexed delegator, uint256 amount);
+  event delegateSuccess(address indexed delegator, address indexed validator, uint256 amount);
+  event undelegateSuccess(address indexed delegator, address indexed validator, uint256 amount);
+  event redelegateSuccess(address indexed delegator, address indexed valSrc, address indexed valDst, uint256 amount);
+  event delegateFailed(address indexed delegator, address indexed validator, uint256 amount, uint8 errCode);
+  event undelegateFailed(address indexed delegator, address indexed validator, uint256 amount, uint8 errCode);
+  event redelegateFailed(address indexed delegator, address indexed valSrc, address indexed valDst, uint256 amount, uint8 errCode);
+  event paramChange(string key, bytes value);
+  event failedSynPackage(uint8 indexed eventType, uint256 errCode);
+  event crashResponse(uint8 indexed eventType);
+
+  receive() external payable {}
+
+  /************************* Implement cross chain app *************************/
+  function handleSynPackage(uint8, bytes calldata msgBytes) external onlyCrossChainContract initParams override returns(bytes memory) {
+    RLPDecode.Iterator memory iter = msgBytes.toRLPItem().iterator();
+    uint8 eventType = uint8(iter.next().toUint());
+    uint32 resCode;
+    bytes memory ackPackage;
+    if (eventType == EVENT_DISTRIBUTE_REWARD) {
+      (resCode, ackPackage) = _handleDistributeRewardSynPackage(iter);
+    } else if (eventType == EVENT_DISTRIBUTE_UNDELEGATED) {
+      (resCode, ackPackage) = _handleDistributeUndelegatedSynPackage(iter);
+    } else {
+      revert("unknown event type");
+    }
+
+    if (resCode != CODE_OK) {
+      emit failedSynPackage(eventType, resCode);
+    }
+    return ackPackage;
+  }
+
+  function handleAckPackage(uint8, bytes calldata msgBytes) external onlyCrossChainContract initParams override {
+    RLPDecode.Iterator memory iter = msgBytes.toRLPItem().iterator();
+
+    uint8 status;
+    uint8 errCode;
+    bytes memory packBytes;
+    bool success;
+    uint256 idx;
+    while (iter.hasNext()) {
+      if (idx == 0) {
+        status = uint8(iter.next().toUint());
+      } else if (idx == 1) {
+        errCode = uint8(iter.next().toUint());
+      } else if (idx == 2) {
+        packBytes = iter.next().toBytes();
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    require(_checkPackHash(packBytes), "wrong pack hash");
+    iter = packBytes.toRLPItem().iterator();
+    uint8 eventType = uint8(iter.next().toUint());
+    RLPDecode.Iterator memory paramIter;
+    if (iter.hasNext()) {
+      paramIter = iter.next().toBytes().toRLPItem().iterator();
+    } else {
+      revert("empty ack package");
+    }
+    if (eventType == EVENT_DELEGATE) {
+      _handleDelegateAckPackage(paramIter, status, errCode);
+    } else if (eventType == EVENT_UNDELEGATE) {
+      _handleUndelegateAckPackage(paramIter, status, errCode);
+    } else if (eventType == EVENT_REDELEGATE) {
+      _handleRedelegateAckPackage(paramIter, status, errCode);
+    } else {
+      revert("unknown event type");
+    }
+  }
+
+  function handleFailAckPackage(uint8, bytes calldata msgBytes) external onlyCrossChainContract initParams override {
+    require(_checkPackHash(msgBytes), "wrong pack hash");
+    RLPDecode.Iterator memory iter = msgBytes.toRLPItem().iterator();
+    uint8 eventType = uint8(iter.next().toUint());
+    RLPDecode.Iterator memory paramIter;
+    if (iter.hasNext()) {
+      paramIter = iter.next().toBytes().toRLPItem().iterator();
+    } else {
+      revert("empty fail ack package");
+    }
+    if (eventType == EVENT_DELEGATE) {
+      _handleDelegateFailAckPackage(paramIter);
+    } else if (eventType == EVENT_UNDELEGATE) {
+      _handleUndelegateFailAckPackage(paramIter);
+    } else if (eventType == EVENT_REDELEGATE) {
+      _handleRedelegateFailAckPackage(paramIter);
+    } else {
+      revert("unknown event type");
+    }
+    return;
+  }
+
+  /***************************** External functions *****************************/
+  function delegate(address validator, uint256 amount) override external payable noReentrant tenDecimalPrecision(amount) initParams {
+    require(amount >= minDelegation, "invalid delegate amount");
+    require(msg.value >= amount.add(relayerFee), "not enough msg value");
+    (bool success,) = msg.sender.call{gas: transferGas}("");
+    require(success, "invalid delegator"); // the msg sender must be payable
+
+    uint256 convertedAmount = amount.div(TEN_DECIMALS); // native bnb decimals is 8 on BBC, while the native bnb decimals on BSC is 18
+    uint256 _relayerFee = (msg.value).sub(amount);
+    uint256 oracleRelayerFee = _relayerFee.sub(bSCRelayerFee);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = msg.sender.encodeAddress();
+    elements[1] = validator.encodeAddress();
+    elements[2] = convertedAmount.encodeUint();
+    bytes memory msgBytes = _RLPEncode(EVENT_DELEGATE, elements.encodeList());
+    packageQueue[rightIndex] = keccak256(msgBytes);
+    ++rightIndex;
+    delegateInFly[msg.sender] += 1;
+
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(CROSS_STAKE_CHANNELID, msgBytes, oracleRelayerFee.div(TEN_DECIMALS));
+    payable(TOKEN_HUB_ADDR).transfer(amount.add(oracleRelayerFee));
+    payable(SYSTEM_REWARD_ADDR).transfer(bSCRelayerFee);
+
+    emit delegateSubmitted(msg.sender, validator, amount, oracleRelayerFee);
+  }
+
+  function undelegate(address validator, uint256 amount) override external payable noReentrant tenDecimalPrecision(amount) initParams {
+    require(msg.value >= relayerFee, "not enough relay fee");
+    if (amount < minDelegation) {
+      require(amount == delegatedOfValidator[msg.sender][validator], "invalid amount");
+      require(amount > bSCRelayerFee, "not enough funds");
+    }
+    require(block.timestamp >= pendingUndelegateTime[msg.sender][validator], "pending undelegation exist");
+    uint256 remainBalance = delegatedOfValidator[msg.sender][validator].sub(amount, "not enough funds");
+    if (remainBalance != 0) {
+      require(remainBalance > bSCRelayerFee, "insufficient balance after undelegate");
+    }
+
+    uint256 convertedAmount = amount.div(TEN_DECIMALS); // native bnb decimals is 8 on BBC, while the native bnb decimals on BSC is 18
+    uint256 _relayerFee = msg.value;
+    uint256 oracleRelayerFee = _relayerFee.sub(bSCRelayerFee);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = msg.sender.encodeAddress();
+    elements[1] = validator.encodeAddress();
+    elements[2] = convertedAmount.encodeUint();
+    bytes memory msgBytes = _RLPEncode(EVENT_UNDELEGATE, elements.encodeList());
+    packageQueue[rightIndex] = keccak256(msgBytes);
+    ++rightIndex;
+    undelegateInFly[msg.sender] += 1;
+
+    pendingUndelegateTime[msg.sender][validator] = block.timestamp.add(LOCK_TIME);
+
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(CROSS_STAKE_CHANNELID, msgBytes, oracleRelayerFee.div(TEN_DECIMALS));
+    payable(TOKEN_HUB_ADDR).transfer(oracleRelayerFee);
+    payable(SYSTEM_REWARD_ADDR).transfer(bSCRelayerFee);
+
+    emit undelegateSubmitted(msg.sender, validator, amount, oracleRelayerFee);
+  }
+
+  function redelegate(address validatorSrc, address validatorDst, uint256 amount) override external noReentrant payable tenDecimalPrecision(amount) initParams {
+    require(validatorSrc != validatorDst, "invalid redelegation");
+    require(msg.value >= relayerFee, "not enough relay fee");
+    require(amount >= minDelegation, "invalid amount");
+    require(block.timestamp >= pendingRedelegateTime[msg.sender][validatorSrc][validatorDst] &&
+      block.timestamp >= pendingRedelegateTime[msg.sender][validatorDst][validatorSrc], "pending redelegation exist");
+    uint256 remainBalance = delegatedOfValidator[msg.sender][validatorSrc].sub(amount, "not enough funds");
+    if (remainBalance != 0) {
+      require(remainBalance > bSCRelayerFee, "insufficient balance after redelegate");
+    }
+
+    uint256 convertedAmount = amount.div(TEN_DECIMALS);// native bnb decimals is 8 on BBC, while the native bnb decimals on BSC is 18
+    uint256 _relayerFee = msg.value;
+    uint256 oracleRelayerFee = _relayerFee.sub(bSCRelayerFee);
+
+    bytes[] memory elements = new bytes[](4);
+    elements[0] = msg.sender.encodeAddress();
+    elements[1] = validatorSrc.encodeAddress();
+    elements[2] = validatorDst.encodeAddress();
+    elements[3] = convertedAmount.encodeUint();
+    bytes memory msgBytes = _RLPEncode(EVENT_REDELEGATE, elements.encodeList());
+    packageQueue[rightIndex] = keccak256(msgBytes);
+    ++rightIndex;
+    redelegateInFly[msg.sender] += 1;
+
+    pendingRedelegateTime[msg.sender][validatorDst][validatorSrc] = block.timestamp.add(LOCK_TIME);
+    pendingRedelegateTime[msg.sender][validatorSrc][validatorDst] = block.timestamp.add(LOCK_TIME);
+
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(CROSS_STAKE_CHANNELID, msgBytes, oracleRelayerFee.div(TEN_DECIMALS));
+    payable(TOKEN_HUB_ADDR).transfer(oracleRelayerFee);
+    payable(SYSTEM_REWARD_ADDR).transfer(bSCRelayerFee);
+
+    emit redelegateSubmitted(msg.sender, validatorSrc, validatorDst, amount, oracleRelayerFee);
+  }
+
+  function claimReward() override external noReentrant returns(uint256 amount) {
+    amount = distributedReward[msg.sender];
+    require(amount > 0, "no pending reward");
+
+    distributedReward[msg.sender] = 0;
+    (bool success,) = msg.sender.call{gas: transferGas, value: amount}("");
+    require(success, "transfer failed");
+    emit rewardClaimed(msg.sender, amount);
+  }
+
+  function claimUndelegated() override external noReentrant returns(uint256 amount) {
+    amount = undelegated[msg.sender];
+    require(amount > 0, "no undelegated funds");
+
+    undelegated[msg.sender] = 0;
+    (bool success,) = msg.sender.call{gas: transferGas, value: amount}("");
+    require(success, "transfer failed");
+    emit undelegatedClaimed(msg.sender, amount);
+  }
+
+  function getDelegated(address delegator, address validator) override external view returns(uint256) {
+    return delegatedOfValidator[delegator][validator];
+  }
+
+  function getTotalDelegated(address delegator) override external view returns(uint256) {
+    return delegated[delegator];
+  }
+
+  function getDistributedReward(address delegator) override external view returns(uint256) {
+    return distributedReward[delegator];
+  }
+
+  function getPendingRedelegateTime(address delegator, address valSrc, address valDst) override external view returns(uint256) {
+    return pendingRedelegateTime[delegator][valSrc][valDst];
+  }
+
+  function getUndelegated(address delegator) override external view returns(uint256) {
+    return undelegated[delegator];
+  }
+
+  function getPendingUndelegateTime(address delegator, address validator) override external view returns(uint256) {
+    return pendingUndelegateTime[delegator][validator];
+  }
+
+  function getRelayerFee() override external view returns(uint256) {
+    return relayerFee;
+  }
+
+  function getMinDelegation() override external view returns(uint256) {
+    return minDelegation;
+  }
+
+  function getRequestInFly(address delegator) override external view returns(uint256[3] memory) {
+    uint256[3] memory request;
+    request[0] = delegateInFly[delegator];
+    request[1] = undelegateInFly[delegator];
+    request[2] = redelegateInFly[delegator];
+    return request;
+  }
+
+  /***************************** Internal functions *****************************/
+  function _RLPEncode(uint8 eventType, bytes memory msgBytes) internal pure returns(bytes memory output) {
+    bytes[] memory elements = new bytes[](2);
+    elements[0] = eventType.encodeUint();
+    elements[1] = msgBytes.encodeBytes();
+    output = elements.encodeList();
+  }
+
+  function _encodeRefundPackage(uint8 eventType, address recipient, uint256 amount, uint32 errorCode) internal pure returns(uint32, bytes memory) {
+    amount = amount.div(TEN_DECIMALS);
+    bytes[] memory elements = new bytes[](4);
+    elements[0] = eventType.encodeUint();
+    elements[1] = recipient.encodeAddress();
+    elements[2] = amount.encodeUint();
+    elements[3] = errorCode.encodeUint();
+    bytes memory packageBytes = elements.encodeList();
+    return (errorCode, packageBytes);
+  }
+
+  function _checkPackHash(bytes memory packBytes) internal returns(bool){
+    bytes32 revHash = keccak256(packBytes);
+    bytes32 expHash = packageQueue[leftIndex];
+    if (revHash != expHash) {
+      return false;
+    }
+    delete packageQueue[leftIndex];
+    ++leftIndex;
+    return true;
+  }
+
+  /******************************** Param update ********************************/
+  function updateParam(string calldata key, bytes calldata value) override external onlyInit onlyGov {
+    if (Memory.compareStrings(key, "relayerFee")) {
+      require(value.length == 32, "length of relayerFee mismatch");
+      uint256 newRelayerFee = BytesToTypes.bytesToUint256(32, value);
+      require(newRelayerFee < minDelegation, "the relayerFee must be less than minDelegation");
+      require(newRelayerFee > bSCRelayerFee, "the relayerFee must be more than BSCRelayerFee");
+      require(newRelayerFee%TEN_DECIMALS==0, "the relayerFee mod ten decimals must be zero");
+      relayerFee = newRelayerFee;
+    } else if (Memory.compareStrings(key, "bSCRelayerFee")) {
+      require(value.length == 32, "length of bSCRelayerFee mismatch");
+      uint256 newBSCRelayerFee = BytesToTypes.bytesToUint256(32, value);
+      require(newBSCRelayerFee != 0, "the BSCRelayerFee must not be zero");
+      require(newBSCRelayerFee < relayerFee, "the BSCRelayerFee must be less than relayerFee");
+      require(newBSCRelayerFee%TEN_DECIMALS==0, "the BSCRelayerFee mod ten decimals must be zero");
+      bSCRelayerFee = newBSCRelayerFee;
+    } else if (Memory.compareStrings(key, "minDelegation")) {
+      require(value.length == 32, "length of minDelegation mismatch");
+      uint256 newMinDelegation = BytesToTypes.bytesToUint256(32, value);
+      require(newMinDelegation > relayerFee, "the minDelegation must be greater than relayerFee");
+      minDelegation = newMinDelegation;
+    } else if (Memory.compareStrings(key, "transferGas")) {
+      require(value.length == 32, "length of transferGas mismatch");
+      uint256 newTransferGas = BytesToTypes.bytesToUint256(32, value);
+      require(newTransferGas > 0, "the transferGas cannot be zero");
+      transferGas = newTransferGas;
+    } else {
+      revert("unknown param");
+    }
+    emit paramChange(key, value);
+  }
+
+  /************************* Handle cross-chain package *************************/
+  function _handleDelegateAckPackage(RLPDecode.Iterator memory paramIter, uint8 status, uint8 errCode) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address validator;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    uint256 amount = bcAmount.mul(TEN_DECIMALS);
+    delegateInFly[delegator] -= 1;
+    if (status == CODE_SUCCESS) {
+      require(errCode == 0, "wrong status");
+      delegated[delegator] = delegated[delegator].add(amount);
+      delegatedOfValidator[delegator][validator] = delegatedOfValidator[delegator][validator].add(amount);
+
+      emit delegateSuccess(delegator, validator, amount);
+    } else if (status == CODE_FAILED) {
+      undelegated[delegator] = undelegated[delegator].add(amount);
+      require(ITokenHub(TOKEN_HUB_ADDR).withdrawStakingBNB(amount), "withdraw bnb failed");
+
+      emit delegateFailed(delegator, validator, amount, errCode);
+    } else {
+      revert("wrong status");
+    }
+  }
+
+  function _handleDelegateFailAckPackage(RLPDecode.Iterator memory paramIter) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address validator;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    uint256 amount = bcAmount.mul(TEN_DECIMALS);
+    delegateInFly[delegator] -= 1;
+    undelegated[delegator] = undelegated[delegator].add(amount);
+    require(ITokenHub(TOKEN_HUB_ADDR).withdrawStakingBNB(amount), "withdraw bnb failed");
+
+    emit crashResponse(EVENT_DELEGATE);
+  }
+
+  function _handleUndelegateAckPackage(RLPDecode.Iterator memory paramIter, uint8 status, uint8 errCode) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address validator;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    uint256 amount = bcAmount.mul(TEN_DECIMALS);
+    undelegateInFly[delegator] -= 1;
+    if (status == CODE_SUCCESS) {
+      require(errCode == 0, "wrong status");
+      delegated[delegator] = delegated[delegator].sub(amount);
+      delegatedOfValidator[delegator][validator] = delegatedOfValidator[delegator][validator].sub(amount);
+      pendingUndelegateTime[delegator][validator] = block.timestamp.add(LOCK_TIME);
+
+      emit undelegateSuccess(delegator, validator, amount);
+    } else if (status == CODE_FAILED) {
+      pendingUndelegateTime[delegator][validator] = 0;
+      emit undelegateFailed(delegator, validator, amount, errCode);
+    } else {
+      revert("wrong status");
+    }
+  }
+
+  function _handleUndelegateFailAckPackage(RLPDecode.Iterator memory paramIter) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address validator;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    undelegateInFly[delegator] -= 1;
+    pendingUndelegateTime[delegator][validator] = 0;
+
+    emit crashResponse(EVENT_UNDELEGATE);
+  }
+
+  function _handleRedelegateAckPackage(RLPDecode.Iterator memory paramIter, uint8 status, uint8 errCode) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address valSrc;
+    address valDst;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        valSrc = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        valDst = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 3) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    uint256 amount = bcAmount.mul(TEN_DECIMALS);
+    redelegateInFly[delegator] -= 1;
+    if (status == CODE_SUCCESS) {
+      require(errCode == 0, "wrong status");
+      delegatedOfValidator[delegator][valSrc] = delegatedOfValidator[delegator][valSrc].sub(amount);
+      delegatedOfValidator[delegator][valDst] = delegatedOfValidator[delegator][valDst].add(amount);
+      pendingRedelegateTime[delegator][valSrc][valDst] = block.timestamp.add(LOCK_TIME);
+      pendingRedelegateTime[delegator][valDst][valSrc] = block.timestamp.add(LOCK_TIME);
+
+      emit redelegateSuccess(delegator, valSrc, valDst, amount);
+    } else if (status == CODE_FAILED) {
+      pendingRedelegateTime[delegator][valSrc][valDst] = 0;
+      pendingRedelegateTime[delegator][valDst][valSrc] = 0;
+      emit redelegateFailed(delegator, valSrc, valDst, amount, errCode);
+    } else {
+      revert("wrong status");
+    }
+  }
+
+  function _handleRedelegateFailAckPackage(RLPDecode.Iterator memory paramIter) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address valSrc;
+    address valDst;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        valSrc = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        valDst = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 3) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    redelegateInFly[delegator] -= 1;
+    pendingRedelegateTime[delegator][valSrc][valDst] = 0;
+    pendingRedelegateTime[delegator][valDst][valSrc] = 0;
+
+    emit crashResponse(EVENT_REDELEGATE);
+  }
+
+  function _handleDistributeRewardSynPackage(RLPDecode.Iterator memory iter) internal returns(uint32, bytes memory) {
+    bool success;
+    uint256 idx;
+    address recipient;
+    uint256 amount;
+    while (iter.hasNext()) {
+      if (idx == 0) {
+        recipient = address(uint160(iter.next().toAddress()));
+      } else if (idx == 1) {
+        amount = uint256(iter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    bool ok = ITokenHub(TOKEN_HUB_ADDR).withdrawStakingBNB(amount);
+    if (!ok) {
+      return _encodeRefundPackage(EVENT_DISTRIBUTE_REWARD, recipient, amount, ERROR_WITHDRAW_BNB);
+    }
+
+    distributedReward[recipient] = distributedReward[recipient].add(amount);
+
+    emit rewardReceived(recipient, amount);
+    return (CODE_OK, new bytes(0));
+  }
+
+  function _handleDistributeUndelegatedSynPackage(RLPDecode.Iterator memory iter) internal returns(uint32, bytes memory) {
+    bool success;
+    uint256 idx;
+    address recipient;
+    address validator;
+    uint256 amount;
+    while (iter.hasNext()) {
+      if (idx == 0) {
+        recipient = address(uint160(iter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(iter.next().toAddress()));
+      } else if (idx == 2) {
+        amount = uint256(iter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    bool ok = ITokenHub(TOKEN_HUB_ADDR).withdrawStakingBNB(amount);
+    if (!ok) {
+      return _encodeRefundPackage(EVENT_DISTRIBUTE_UNDELEGATED, recipient, amount, ERROR_WITHDRAW_BNB);
+    }
+
+    pendingUndelegateTime[recipient][validator] = 0;
+    undelegated[recipient] = undelegated[recipient].add(amount);
+
+    emit undelegatedReceived(recipient, validator, amount);
+    return (CODE_OK, new bytes(0));
+  }
+}
diff --git a/contracts/Staking.template b/contracts/Staking.template
new file mode 100644
index 00000000..23366221
--- /dev/null
+++ b/contracts/Staking.template
@@ -0,0 +1,682 @@
+pragma solidity 0.6.4;
+
+import "./System.sol";
+import "./interface/IApplication.sol";
+import "./interface/ICrossChain.sol";
+import "./interface/IParamSubscriber.sol";
+import "./interface/IStaking.sol";
+import "./interface/ITokenHub.sol";
+import "./lib/BytesToTypes.sol";
+import "./lib/BytesLib.sol";
+import "./lib/CmnPkg.sol";
+import "./lib/Memory.sol";
+import "./lib/RLPEncode.sol";
+import "./lib/RLPDecode.sol";
+import "./lib/SafeMath.sol";
+
+
+contract Staking is IStaking, System, IParamSubscriber, IApplication {
+  using SafeMath for uint256;
+  using RLPEncode for *;
+  using RLPDecode for *;
+
+  // Cross Stake Event type
+  uint8 public constant EVENT_DELEGATE = 0x01;
+  uint8 public constant EVENT_UNDELEGATE = 0x02;
+  uint8 public constant EVENT_REDELEGATE = 0x03;
+  uint8 public constant EVENT_DISTRIBUTE_REWARD = 0x04;
+  uint8 public constant EVENT_DISTRIBUTE_UNDELEGATED = 0x05;
+
+  // ack package status code
+  uint8 public constant CODE_FAILED = 0;
+  uint8 public constant CODE_SUCCESS = 1;
+
+  // Error code
+  uint32 public constant ERROR_WITHDRAW_BNB = 101;
+
+  uint256 public constant TEN_DECIMALS = 1e10;
+  uint256 public constant LOCK_TIME = 8 days; // 8*24*3600 second
+
+  uint256 public constant INIT_RELAYER_FEE = 16 * 1e15;
+  uint256 public constant INIT_BSC_RELAYER_FEE = 1 * 1e16;
+  uint256 public constant INIT_MIN_DELEGATION = 100 * 1e18;
+  uint256 public constant INIT_TRANSFER_GAS = 2300;
+
+  uint256 public relayerFee;
+  uint256 public bSCRelayerFee;
+  uint256 public minDelegation;
+
+  mapping(address => uint256) delegated; // delegator => totalAmount
+  mapping(address => mapping(address => uint256)) delegatedOfValidator; // delegator => validator => amount
+  mapping(address => uint256) distributedReward; // delegator => reward
+  mapping(address => mapping(address => uint256)) pendingUndelegateTime; // delegator => validator => minTime
+  mapping(address => uint256) undelegated; // delegator => totalUndelegated
+  mapping(address => mapping(address => mapping(address => uint256))) pendingRedelegateTime; // delegator => srcValidator => dstValidator => minTime
+
+  mapping(uint256 => bytes32) packageQueue; // index => package's hash
+  mapping(address => uint256) delegateInFly; // delegator => delegate request in fly
+  mapping(address => uint256) undelegateInFly; // delegator => undelegate request in fly
+  mapping(address => uint256) redelegateInFly; // delegator => redelegate request in fly
+
+  uint256 internal leftIndex;
+  uint256 internal rightIndex;
+  uint8 internal locked;
+
+  uint256 public transferGas; // this param is newly added after the hardfork on testnet. It need to be initialed by governed
+
+  modifier noReentrant() {
+    require(locked != 2, "No re-entrancy");
+    locked = 2;
+    _;
+    locked = 1;
+  }
+
+  modifier tenDecimalPrecision(uint256 amount) {
+    require(msg.value%TEN_DECIMALS==0 && amount%TEN_DECIMALS==0, "precision loss in conversion");
+    _;
+  }
+
+  modifier initParams() {
+    if (!alreadyInit) {
+      relayerFee = INIT_RELAYER_FEE;
+      bSCRelayerFee = INIT_BSC_RELAYER_FEE;
+      minDelegation = INIT_MIN_DELEGATION;
+      transferGas = INIT_TRANSFER_GAS;
+      alreadyInit = true;
+    }
+    _;
+  }
+
+  /*********************************** Events **********************************/
+  event delegateSubmitted(address indexed delegator, address indexed validator, uint256 amount, uint256 relayerFee);
+  event undelegateSubmitted(address indexed delegator, address indexed validator, uint256 amount, uint256 relayerFee);
+  event redelegateSubmitted(address indexed delegator, address indexed validatorSrc, address indexed validatorDst, uint256 amount, uint256 relayerFee);
+  event rewardReceived(address indexed delegator, uint256 amount);
+  event rewardClaimed(address indexed delegator, uint256 amount);
+  event undelegatedReceived(address indexed delegator, address indexed validator, uint256 amount);
+  event undelegatedClaimed(address indexed delegator, uint256 amount);
+  event delegateSuccess(address indexed delegator, address indexed validator, uint256 amount);
+  event undelegateSuccess(address indexed delegator, address indexed validator, uint256 amount);
+  event redelegateSuccess(address indexed delegator, address indexed valSrc, address indexed valDst, uint256 amount);
+  event delegateFailed(address indexed delegator, address indexed validator, uint256 amount, uint8 errCode);
+  event undelegateFailed(address indexed delegator, address indexed validator, uint256 amount, uint8 errCode);
+  event redelegateFailed(address indexed delegator, address indexed valSrc, address indexed valDst, uint256 amount, uint8 errCode);
+  event paramChange(string key, bytes value);
+  event failedSynPackage(uint8 indexed eventType, uint256 errCode);
+  event crashResponse(uint8 indexed eventType);
+
+  receive() external payable {}
+
+  /************************* Implement cross chain app *************************/
+  function handleSynPackage(uint8, bytes calldata msgBytes) external onlyCrossChainContract initParams override returns(bytes memory) {
+    RLPDecode.Iterator memory iter = msgBytes.toRLPItem().iterator();
+    uint8 eventType = uint8(iter.next().toUint());
+    uint32 resCode;
+    bytes memory ackPackage;
+    if (eventType == EVENT_DISTRIBUTE_REWARD) {
+      (resCode, ackPackage) = _handleDistributeRewardSynPackage(iter);
+    } else if (eventType == EVENT_DISTRIBUTE_UNDELEGATED) {
+      (resCode, ackPackage) = _handleDistributeUndelegatedSynPackage(iter);
+    } else {
+      revert("unknown event type");
+    }
+
+    if (resCode != CODE_OK) {
+      emit failedSynPackage(eventType, resCode);
+    }
+    return ackPackage;
+  }
+
+  function handleAckPackage(uint8, bytes calldata msgBytes) external onlyCrossChainContract initParams override {
+    RLPDecode.Iterator memory iter = msgBytes.toRLPItem().iterator();
+
+    uint8 status;
+    uint8 errCode;
+    bytes memory packBytes;
+    bool success;
+    uint256 idx;
+    while (iter.hasNext()) {
+      if (idx == 0) {
+        status = uint8(iter.next().toUint());
+      } else if (idx == 1) {
+        errCode = uint8(iter.next().toUint());
+      } else if (idx == 2) {
+        packBytes = iter.next().toBytes();
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    require(_checkPackHash(packBytes), "wrong pack hash");
+    iter = packBytes.toRLPItem().iterator();
+    uint8 eventType = uint8(iter.next().toUint());
+    RLPDecode.Iterator memory paramIter;
+    if (iter.hasNext()) {
+      paramIter = iter.next().toBytes().toRLPItem().iterator();
+    } else {
+      revert("empty ack package");
+    }
+    if (eventType == EVENT_DELEGATE) {
+      _handleDelegateAckPackage(paramIter, status, errCode);
+    } else if (eventType == EVENT_UNDELEGATE) {
+      _handleUndelegateAckPackage(paramIter, status, errCode);
+    } else if (eventType == EVENT_REDELEGATE) {
+      _handleRedelegateAckPackage(paramIter, status, errCode);
+    } else {
+      revert("unknown event type");
+    }
+  }
+
+  function handleFailAckPackage(uint8, bytes calldata msgBytes) external onlyCrossChainContract initParams override {
+    require(_checkPackHash(msgBytes), "wrong pack hash");
+    RLPDecode.Iterator memory iter = msgBytes.toRLPItem().iterator();
+    uint8 eventType = uint8(iter.next().toUint());
+    RLPDecode.Iterator memory paramIter;
+    if (iter.hasNext()) {
+      paramIter = iter.next().toBytes().toRLPItem().iterator();
+    } else {
+      revert("empty fail ack package");
+    }
+    if (eventType == EVENT_DELEGATE) {
+      _handleDelegateFailAckPackage(paramIter);
+    } else if (eventType == EVENT_UNDELEGATE) {
+      _handleUndelegateFailAckPackage(paramIter);
+    } else if (eventType == EVENT_REDELEGATE) {
+      _handleRedelegateFailAckPackage(paramIter);
+    } else {
+      revert("unknown event type");
+    }
+    return;
+  }
+
+  /***************************** External functions *****************************/
+  function delegate(address validator, uint256 amount) override external payable noReentrant tenDecimalPrecision(amount) initParams {
+    require(amount >= minDelegation, "invalid delegate amount");
+    require(msg.value >= amount.add(relayerFee), "not enough msg value");
+    (bool success,) = msg.sender.call{gas: transferGas}("");
+    require(success, "invalid delegator"); // the msg sender must be payable
+
+    uint256 convertedAmount = amount.div(TEN_DECIMALS); // native bnb decimals is 8 on BBC, while the native bnb decimals on BSC is 18
+    uint256 _relayerFee = (msg.value).sub(amount);
+    uint256 oracleRelayerFee = _relayerFee.sub(bSCRelayerFee);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = msg.sender.encodeAddress();
+    elements[1] = validator.encodeAddress();
+    elements[2] = convertedAmount.encodeUint();
+    bytes memory msgBytes = _RLPEncode(EVENT_DELEGATE, elements.encodeList());
+    packageQueue[rightIndex] = keccak256(msgBytes);
+    ++rightIndex;
+    delegateInFly[msg.sender] += 1;
+
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(CROSS_STAKE_CHANNELID, msgBytes, oracleRelayerFee.div(TEN_DECIMALS));
+    payable(TOKEN_HUB_ADDR).transfer(amount.add(oracleRelayerFee));
+    payable(SYSTEM_REWARD_ADDR).transfer(bSCRelayerFee);
+
+    emit delegateSubmitted(msg.sender, validator, amount, oracleRelayerFee);
+  }
+
+  function undelegate(address validator, uint256 amount) override external payable noReentrant tenDecimalPrecision(amount) initParams {
+    require(msg.value >= relayerFee, "not enough relay fee");
+    if (amount < minDelegation) {
+      require(amount == delegatedOfValidator[msg.sender][validator], "invalid amount");
+      require(amount > bSCRelayerFee, "not enough funds");
+    }
+    require(block.timestamp >= pendingUndelegateTime[msg.sender][validator], "pending undelegation exist");
+    uint256 remainBalance = delegatedOfValidator[msg.sender][validator].sub(amount, "not enough funds");
+    if (remainBalance != 0) {
+      require(remainBalance > bSCRelayerFee, "insufficient balance after undelegate");
+    }
+
+    uint256 convertedAmount = amount.div(TEN_DECIMALS); // native bnb decimals is 8 on BBC, while the native bnb decimals on BSC is 18
+    uint256 _relayerFee = msg.value;
+    uint256 oracleRelayerFee = _relayerFee.sub(bSCRelayerFee);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = msg.sender.encodeAddress();
+    elements[1] = validator.encodeAddress();
+    elements[2] = convertedAmount.encodeUint();
+    bytes memory msgBytes = _RLPEncode(EVENT_UNDELEGATE, elements.encodeList());
+    packageQueue[rightIndex] = keccak256(msgBytes);
+    ++rightIndex;
+    undelegateInFly[msg.sender] += 1;
+
+    pendingUndelegateTime[msg.sender][validator] = block.timestamp.add(LOCK_TIME);
+
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(CROSS_STAKE_CHANNELID, msgBytes, oracleRelayerFee.div(TEN_DECIMALS));
+    payable(TOKEN_HUB_ADDR).transfer(oracleRelayerFee);
+    payable(SYSTEM_REWARD_ADDR).transfer(bSCRelayerFee);
+
+    emit undelegateSubmitted(msg.sender, validator, amount, oracleRelayerFee);
+  }
+
+  function redelegate(address validatorSrc, address validatorDst, uint256 amount) override external noReentrant payable tenDecimalPrecision(amount) initParams {
+    require(validatorSrc != validatorDst, "invalid redelegation");
+    require(msg.value >= relayerFee, "not enough relay fee");
+    require(amount >= minDelegation, "invalid amount");
+    require(block.timestamp >= pendingRedelegateTime[msg.sender][validatorSrc][validatorDst] &&
+      block.timestamp >= pendingRedelegateTime[msg.sender][validatorDst][validatorSrc], "pending redelegation exist");
+    uint256 remainBalance = delegatedOfValidator[msg.sender][validatorSrc].sub(amount, "not enough funds");
+    if (remainBalance != 0) {
+      require(remainBalance > bSCRelayerFee, "insufficient balance after redelegate");
+    }
+
+    uint256 convertedAmount = amount.div(TEN_DECIMALS);// native bnb decimals is 8 on BBC, while the native bnb decimals on BSC is 18
+    uint256 _relayerFee = msg.value;
+    uint256 oracleRelayerFee = _relayerFee.sub(bSCRelayerFee);
+
+    bytes[] memory elements = new bytes[](4);
+    elements[0] = msg.sender.encodeAddress();
+    elements[1] = validatorSrc.encodeAddress();
+    elements[2] = validatorDst.encodeAddress();
+    elements[3] = convertedAmount.encodeUint();
+    bytes memory msgBytes = _RLPEncode(EVENT_REDELEGATE, elements.encodeList());
+    packageQueue[rightIndex] = keccak256(msgBytes);
+    ++rightIndex;
+    redelegateInFly[msg.sender] += 1;
+
+    pendingRedelegateTime[msg.sender][validatorDst][validatorSrc] = block.timestamp.add(LOCK_TIME);
+    pendingRedelegateTime[msg.sender][validatorSrc][validatorDst] = block.timestamp.add(LOCK_TIME);
+
+    ICrossChain(CROSS_CHAIN_CONTRACT_ADDR).sendSynPackage(CROSS_STAKE_CHANNELID, msgBytes, oracleRelayerFee.div(TEN_DECIMALS));
+    payable(TOKEN_HUB_ADDR).transfer(oracleRelayerFee);
+    payable(SYSTEM_REWARD_ADDR).transfer(bSCRelayerFee);
+
+    emit redelegateSubmitted(msg.sender, validatorSrc, validatorDst, amount, oracleRelayerFee);
+  }
+
+  function claimReward() override external noReentrant returns(uint256 amount) {
+    amount = distributedReward[msg.sender];
+    require(amount > 0, "no pending reward");
+
+    distributedReward[msg.sender] = 0;
+    (bool success,) = msg.sender.call{gas: transferGas, value: amount}("");
+    require(success, "transfer failed");
+    emit rewardClaimed(msg.sender, amount);
+  }
+
+  function claimUndelegated() override external noReentrant returns(uint256 amount) {
+    amount = undelegated[msg.sender];
+    require(amount > 0, "no undelegated funds");
+
+    undelegated[msg.sender] = 0;
+    (bool success,) = msg.sender.call{gas: transferGas, value: amount}("");
+    require(success, "transfer failed");
+    emit undelegatedClaimed(msg.sender, amount);
+  }
+
+  function getDelegated(address delegator, address validator) override external view returns(uint256) {
+    return delegatedOfValidator[delegator][validator];
+  }
+
+  function getTotalDelegated(address delegator) override external view returns(uint256) {
+    return delegated[delegator];
+  }
+
+  function getDistributedReward(address delegator) override external view returns(uint256) {
+    return distributedReward[delegator];
+  }
+
+  function getPendingRedelegateTime(address delegator, address valSrc, address valDst) override external view returns(uint256) {
+    return pendingRedelegateTime[delegator][valSrc][valDst];
+  }
+
+  function getUndelegated(address delegator) override external view returns(uint256) {
+    return undelegated[delegator];
+  }
+
+  function getPendingUndelegateTime(address delegator, address validator) override external view returns(uint256) {
+    return pendingUndelegateTime[delegator][validator];
+  }
+
+  function getRelayerFee() override external view returns(uint256) {
+    return relayerFee;
+  }
+
+  function getMinDelegation() override external view returns(uint256) {
+    return minDelegation;
+  }
+
+  function getRequestInFly(address delegator) override external view returns(uint256[3] memory) {
+    uint256[3] memory request;
+    request[0] = delegateInFly[delegator];
+    request[1] = undelegateInFly[delegator];
+    request[2] = redelegateInFly[delegator];
+    return request;
+  }
+
+  /***************************** Internal functions *****************************/
+  function _RLPEncode(uint8 eventType, bytes memory msgBytes) internal pure returns(bytes memory output) {
+    bytes[] memory elements = new bytes[](2);
+    elements[0] = eventType.encodeUint();
+    elements[1] = msgBytes.encodeBytes();
+    output = elements.encodeList();
+  }
+
+  function _encodeRefundPackage(uint8 eventType, address recipient, uint256 amount, uint32 errorCode) internal pure returns(uint32, bytes memory) {
+    amount = amount.div(TEN_DECIMALS);
+    bytes[] memory elements = new bytes[](4);
+    elements[0] = eventType.encodeUint();
+    elements[1] = recipient.encodeAddress();
+    elements[2] = amount.encodeUint();
+    elements[3] = errorCode.encodeUint();
+    bytes memory packageBytes = elements.encodeList();
+    return (errorCode, packageBytes);
+  }
+
+  function _checkPackHash(bytes memory packBytes) internal returns(bool){
+    bytes32 revHash = keccak256(packBytes);
+    bytes32 expHash = packageQueue[leftIndex];
+    if (revHash != expHash) {
+      return false;
+    }
+    delete packageQueue[leftIndex];
+    ++leftIndex;
+    return true;
+  }
+
+  /******************************** Param update ********************************/
+  function updateParam(string calldata key, bytes calldata value) override external onlyInit onlyGov {
+    if (Memory.compareStrings(key, "relayerFee")) {
+      require(value.length == 32, "length of relayerFee mismatch");
+      uint256 newRelayerFee = BytesToTypes.bytesToUint256(32, value);
+      require(newRelayerFee < minDelegation, "the relayerFee must be less than minDelegation");
+      require(newRelayerFee > bSCRelayerFee, "the relayerFee must be more than BSCRelayerFee");
+      require(newRelayerFee%TEN_DECIMALS==0, "the relayerFee mod ten decimals must be zero");
+      relayerFee = newRelayerFee;
+    } else if (Memory.compareStrings(key, "bSCRelayerFee")) {
+      require(value.length == 32, "length of bSCRelayerFee mismatch");
+      uint256 newBSCRelayerFee = BytesToTypes.bytesToUint256(32, value);
+      require(newBSCRelayerFee != 0, "the BSCRelayerFee must not be zero");
+      require(newBSCRelayerFee < relayerFee, "the BSCRelayerFee must be less than relayerFee");
+      require(newBSCRelayerFee%TEN_DECIMALS==0, "the BSCRelayerFee mod ten decimals must be zero");
+      bSCRelayerFee = newBSCRelayerFee;
+    } else if (Memory.compareStrings(key, "minDelegation")) {
+      require(value.length == 32, "length of minDelegation mismatch");
+      uint256 newMinDelegation = BytesToTypes.bytesToUint256(32, value);
+      require(newMinDelegation > relayerFee, "the minDelegation must be greater than relayerFee");
+      minDelegation = newMinDelegation;
+    } else if (Memory.compareStrings(key, "transferGas")) {
+      require(value.length == 32, "length of transferGas mismatch");
+      uint256 newTransferGas = BytesToTypes.bytesToUint256(32, value);
+      require(newTransferGas > 0, "the transferGas cannot be zero");
+      transferGas = newTransferGas;
+    } else {
+      revert("unknown param");
+    }
+    emit paramChange(key, value);
+  }
+
+  /************************* Handle cross-chain package *************************/
+  function _handleDelegateAckPackage(RLPDecode.Iterator memory paramIter, uint8 status, uint8 errCode) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address validator;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    uint256 amount = bcAmount.mul(TEN_DECIMALS);
+    delegateInFly[delegator] -= 1;
+    if (status == CODE_SUCCESS) {
+      require(errCode == 0, "wrong status");
+      delegated[delegator] = delegated[delegator].add(amount);
+      delegatedOfValidator[delegator][validator] = delegatedOfValidator[delegator][validator].add(amount);
+
+      emit delegateSuccess(delegator, validator, amount);
+    } else if (status == CODE_FAILED) {
+      undelegated[delegator] = undelegated[delegator].add(amount);
+      require(ITokenHub(TOKEN_HUB_ADDR).withdrawStakingBNB(amount), "withdraw bnb failed");
+
+      emit delegateFailed(delegator, validator, amount, errCode);
+    } else {
+      revert("wrong status");
+    }
+  }
+
+  function _handleDelegateFailAckPackage(RLPDecode.Iterator memory paramIter) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address validator;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    uint256 amount = bcAmount.mul(TEN_DECIMALS);
+    delegateInFly[delegator] -= 1;
+    undelegated[delegator] = undelegated[delegator].add(amount);
+    require(ITokenHub(TOKEN_HUB_ADDR).withdrawStakingBNB(amount), "withdraw bnb failed");
+
+    emit crashResponse(EVENT_DELEGATE);
+  }
+
+  function _handleUndelegateAckPackage(RLPDecode.Iterator memory paramIter, uint8 status, uint8 errCode) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address validator;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    uint256 amount = bcAmount.mul(TEN_DECIMALS);
+    undelegateInFly[delegator] -= 1;
+    if (status == CODE_SUCCESS) {
+      require(errCode == 0, "wrong status");
+      delegated[delegator] = delegated[delegator].sub(amount);
+      delegatedOfValidator[delegator][validator] = delegatedOfValidator[delegator][validator].sub(amount);
+      pendingUndelegateTime[delegator][validator] = block.timestamp.add(LOCK_TIME);
+
+      emit undelegateSuccess(delegator, validator, amount);
+    } else if (status == CODE_FAILED) {
+      pendingUndelegateTime[delegator][validator] = 0;
+      emit undelegateFailed(delegator, validator, amount, errCode);
+    } else {
+      revert("wrong status");
+    }
+  }
+
+  function _handleUndelegateFailAckPackage(RLPDecode.Iterator memory paramIter) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address validator;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    undelegateInFly[delegator] -= 1;
+    pendingUndelegateTime[delegator][validator] = 0;
+
+    emit crashResponse(EVENT_UNDELEGATE);
+  }
+
+  function _handleRedelegateAckPackage(RLPDecode.Iterator memory paramIter, uint8 status, uint8 errCode) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address valSrc;
+    address valDst;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        valSrc = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        valDst = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 3) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    uint256 amount = bcAmount.mul(TEN_DECIMALS);
+    redelegateInFly[delegator] -= 1;
+    if (status == CODE_SUCCESS) {
+      require(errCode == 0, "wrong status");
+      delegatedOfValidator[delegator][valSrc] = delegatedOfValidator[delegator][valSrc].sub(amount);
+      delegatedOfValidator[delegator][valDst] = delegatedOfValidator[delegator][valDst].add(amount);
+      pendingRedelegateTime[delegator][valSrc][valDst] = block.timestamp.add(LOCK_TIME);
+      pendingRedelegateTime[delegator][valDst][valSrc] = block.timestamp.add(LOCK_TIME);
+
+      emit redelegateSuccess(delegator, valSrc, valDst, amount);
+    } else if (status == CODE_FAILED) {
+      pendingRedelegateTime[delegator][valSrc][valDst] = 0;
+      pendingRedelegateTime[delegator][valDst][valSrc] = 0;
+      emit redelegateFailed(delegator, valSrc, valDst, amount, errCode);
+    } else {
+      revert("wrong status");
+    }
+  }
+
+  function _handleRedelegateFailAckPackage(RLPDecode.Iterator memory paramIter) internal {
+    bool success;
+    uint256 idx;
+    address delegator;
+    address valSrc;
+    address valDst;
+    uint256 bcAmount;
+    while (paramIter.hasNext()) {
+      if (idx == 0) {
+        delegator = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 1) {
+        valSrc = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 2) {
+        valDst = address(uint160(paramIter.next().toAddress()));
+      } else if (idx == 3) {
+        bcAmount = uint256(paramIter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    redelegateInFly[delegator] -= 1;
+    pendingRedelegateTime[delegator][valSrc][valDst] = 0;
+    pendingRedelegateTime[delegator][valDst][valSrc] = 0;
+
+    emit crashResponse(EVENT_REDELEGATE);
+  }
+
+  function _handleDistributeRewardSynPackage(RLPDecode.Iterator memory iter) internal returns(uint32, bytes memory) {
+    bool success;
+    uint256 idx;
+    address recipient;
+    uint256 amount;
+    while (iter.hasNext()) {
+      if (idx == 0) {
+        recipient = address(uint160(iter.next().toAddress()));
+      } else if (idx == 1) {
+        amount = uint256(iter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    bool ok = ITokenHub(TOKEN_HUB_ADDR).withdrawStakingBNB(amount);
+    if (!ok) {
+      return _encodeRefundPackage(EVENT_DISTRIBUTE_REWARD, recipient, amount, ERROR_WITHDRAW_BNB);
+    }
+
+    distributedReward[recipient] = distributedReward[recipient].add(amount);
+
+    emit rewardReceived(recipient, amount);
+    return (CODE_OK, new bytes(0));
+  }
+
+  function _handleDistributeUndelegatedSynPackage(RLPDecode.Iterator memory iter) internal returns(uint32, bytes memory) {
+    bool success;
+    uint256 idx;
+    address recipient;
+    address validator;
+    uint256 amount;
+    while (iter.hasNext()) {
+      if (idx == 0) {
+        recipient = address(uint160(iter.next().toAddress()));
+      } else if (idx == 1) {
+        validator = address(uint160(iter.next().toAddress()));
+      } else if (idx == 2) {
+        amount = uint256(iter.next().toUint());
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode failed");
+
+    bool ok = ITokenHub(TOKEN_HUB_ADDR).withdrawStakingBNB(amount);
+    if (!ok) {
+      return _encodeRefundPackage(EVENT_DISTRIBUTE_UNDELEGATED, recipient, amount, ERROR_WITHDRAW_BNB);
+    }
+
+    pendingUndelegateTime[recipient][validator] = 0;
+    undelegated[recipient] = undelegated[recipient].add(amount);
+
+    emit undelegatedReceived(recipient, validator, amount);
+    return (CODE_OK, new bytes(0));
+  }
+}
diff --git a/contracts/System.sol b/contracts/System.sol
index 7d64ddc2..b86d845c 100644
--- a/contracts/System.sol
+++ b/contracts/System.sol
@@ -17,6 +17,7 @@ contract System {
   uint8 constant public STAKING_CHANNELID = 0x08;
   uint8 constant public GOV_CHANNELID = 0x09;
   uint8 constant public SLASH_CHANNELID = 0x0b;
+  uint8 constant public CROSS_STAKE_CHANNELID = 0x10;
   uint16 constant public bscChainID = 0x0060;
 
   address public constant VALIDATOR_CONTRACT_ADDR = 0x0000000000000000000000000000000000001000;
@@ -29,7 +30,7 @@ contract System {
   address public constant GOV_HUB_ADDR = 0x0000000000000000000000000000000000001007;
   address public constant TOKEN_MANAGER_ADDR = 0x0000000000000000000000000000000000001008;
   address public constant CROSS_CHAIN_CONTRACT_ADDR = 0x0000000000000000000000000000000000002000;
-
+  address public constant STAKING_CONTRACT_ADDR = 0x0000000000000000000000000000000000002001;
 
   modifier onlyCoinbase() {
     require(msg.sender == block.coinbase, "the message sender must be the block producer");
@@ -81,6 +82,13 @@ contract System {
     _;
   }
 
+  
+  modifier onlyWhitelabelRelayer() {
+      require(msg.sender == 0xb005741528b86F5952469d80A8614591E3c5B632 || msg.sender == 0x446AA6E0DC65690403dF3F127750da1322941F3e, "the msg sender is not a whitelabel relayer");
+      _;
+  }
+  
+
   modifier onlyTokenManager() {
     require(msg.sender == TOKEN_MANAGER_ADDR, "the msg sender must be tokenManager");
     _;
diff --git a/contracts/System.template b/contracts/System.template
index 4ceba2da..359d8246 100644
--- a/contracts/System.template
+++ b/contracts/System.template
@@ -17,32 +17,9 @@ contract System {
   uint8 constant public STAKING_CHANNELID = 0x08;
   uint8 constant public GOV_CHANNELID = 0x09;
   uint8 constant public SLASH_CHANNELID = 0x0b;
+  uint8 constant public CROSS_STAKE_CHANNELID = 0x10;
   uint16 constant public bscChainID = 0x{{bscChainId}};
-{% if mock %}
-  address public  VALIDATOR_CONTRACT_ADDR;
-  address public  SLASH_CONTRACT_ADDR;
-  address public  SYSTEM_REWARD_ADDR;
-  address public  LIGHT_CLIENT_ADDR;
-  address public  TOKEN_HUB_ADDR;
-  address public INCENTIVIZE_ADDR;
-  address public RELAYERHUB_CONTRACT_ADDR;
-  address public GOV_HUB_ADDR;
-  address public TOKEN_MANAGER_ADDR;
-  address public CROSS_CHAIN_CONTRACT_ADDR;
-
-  function updateContractAddr(address valAddr, address slashAddr, address rewardAddr, address lightAddr, address tokenHubAddr,
-  address incentivizeAddr, address relayerHubAddr, address govHub, address tokenManagerAddr, address crossChain) external {
-    VALIDATOR_CONTRACT_ADDR = valAddr;
-    SLASH_CONTRACT_ADDR = slashAddr;
-    SYSTEM_REWARD_ADDR = rewardAddr;
-    LIGHT_CLIENT_ADDR = lightAddr;
-    TOKEN_HUB_ADDR = tokenHubAddr;
-    INCENTIVIZE_ADDR = incentivizeAddr;
-    RELAYERHUB_CONTRACT_ADDR = relayerHubAddr;
-    GOV_HUB_ADDR = govHub;
-    TOKEN_MANAGER_ADDR = tokenManagerAddr;
-    CROSS_CHAIN_CONTRACT_ADDR = crossChain;
-  }{% else %}
+
   address public constant VALIDATOR_CONTRACT_ADDR = 0x0000000000000000000000000000000000001000;
   address public constant SLASH_CONTRACT_ADDR = 0x0000000000000000000000000000000000001001;
   address public constant SYSTEM_REWARD_ADDR = 0x0000000000000000000000000000000000001002;
@@ -53,20 +30,13 @@ contract System {
   address public constant GOV_HUB_ADDR = 0x0000000000000000000000000000000000001007;
   address public constant TOKEN_MANAGER_ADDR = 0x0000000000000000000000000000000000001008;
   address public constant CROSS_CHAIN_CONTRACT_ADDR = 0x0000000000000000000000000000000000002000;
-{% endif %}
-{% if mock %}
-  address public constant SYSTEM_ADDRESS = 0x9fB29AAc15b9A4B7F17c3385939b007540f4d791;
+  address public constant STAKING_CONTRACT_ADDR = 0x0000000000000000000000000000000000002001;
 
-  modifier onlyCoinbase() {
-    require(msg.sender == SYSTEM_ADDRESS, "the message sender must be the block producer");
-    _;
-  }
-{% else %}
   modifier onlyCoinbase() {
     require(msg.sender == block.coinbase, "the message sender must be the block producer");
     _;
   }
-{% endif %}
+
   modifier onlyNotInit() {
     require(!alreadyInit, "the contract already init");
     _;
@@ -112,6 +82,28 @@ contract System {
     _;
   }
 
+  {% if network == 'local' %}
+  modifier onlyWhitelabelRelayer() {
+      require(msg.sender == 0xA904540818AC9c47f2321F97F1069B9d8746c6DB || msg.sender == 0x316b2Fa7C8a2ab7E21110a4B3f58771C01A71344, "the msg sender is not a whitelabel relayer");
+      _;
+  }
+  {% elif network == 'QA' %}
+  modifier onlyWhitelabelRelayer() {
+      require(msg.sender == 0x88cb4D8F77742c24d647BEf8049D3f3C56067cDD || msg.sender == 0x42D596440775C90db8d9187b47650986E1063493, "the msg sender is not a whitelabel relayer");
+      _;
+  }
+  {% elif network == 'testnet' %}
+  modifier onlyWhitelabelRelayer() {
+      require(msg.sender == 0x9fB29AAc15b9A4B7F17c3385939b007540f4d791 || msg.sender == 0x37B8516a0F88E65D677229b402ec6C1e0E333004, "the msg sender is not a whitelabel relayer");
+      _;
+  }
+  {% else %}
+  modifier onlyWhitelabelRelayer() {
+      require(msg.sender == 0xb005741528b86F5952469d80A8614591E3c5B632 || msg.sender == 0x446AA6E0DC65690403dF3F127750da1322941F3e, "the msg sender is not a whitelabel relayer");
+      _;
+  }
+  {% endif %}
+
   modifier onlyTokenManager() {
     require(msg.sender == TOKEN_MANAGER_ADDR, "the msg sender must be tokenManager");
     _;
diff --git a/contracts/SystemReward.sol b/contracts/SystemReward.sol
index ffaa2a60..34c1f406 100644
--- a/contracts/SystemReward.sol
+++ b/contracts/SystemReward.sol
@@ -1,14 +1,16 @@
 pragma solidity 0.6.4;
+
 import "./System.sol";
+import "./lib/Memory.sol";
+import "./interface/IParamSubscriber.sol";
 import "./interface/ISystemReward.sol";
 
-contract SystemReward is System, ISystemReward{
+contract SystemReward is System, IParamSubscriber, ISystemReward {
   uint256 public constant MAX_REWARDS = 1e18;
 
   uint public numOperator;
   mapping(address => bool) operators;
 
-
   modifier doInit() {
     if (!alreadyInit) {
       operators[LIGHT_CLIENT_ADDR] = true;
@@ -19,16 +21,16 @@ contract SystemReward is System, ISystemReward{
     _;
   }
 
-
   modifier onlyOperator() {
     require(operators[msg.sender],"only operator is allowed to call the method");
     _;
   }
-  
+
   event rewardTo(address indexed to, uint256 amount);
   event rewardEmpty();
   event receiveDeposit(address indexed from, uint256 amount);
-
+  event updateOperator(address indexed operator);
+  event paramChange(string key, bytes value);
 
   receive() external payable{
     if (msg.value>0) {
@@ -36,13 +38,12 @@ contract SystemReward is System, ISystemReward{
     }
   }
 
-  
   function claimRewards(address payable to, uint256 amount) external override(ISystemReward) doInit onlyOperator returns(uint256) {
     uint256 actualAmount = amount < address(this).balance ? amount : address(this).balance;
     if (actualAmount > MAX_REWARDS) {
       actualAmount = MAX_REWARDS;
     }
-    if (actualAmount>0) {
+    if (actualAmount != 0) {
       to.transfer(actualAmount);
       emit rewardTo(to, actualAmount);
     } else {
@@ -54,4 +55,20 @@ contract SystemReward is System, ISystemReward{
   function isOperator(address addr) external view returns (bool) {
     return operators[addr];
   }
-}
\ No newline at end of file
+
+  function updateParam(string calldata key, bytes calldata value) onlyGov external override {
+    if (Memory.compareStrings(key, "updateOperator")) {
+      bytes memory valueLocal = value;
+      require(valueLocal.length == 20, "length of value for updateOperator should be 20");
+      address operatorAddr;
+      assembly {
+        operatorAddr := mload(add(valueLocal, 20))
+      }
+      operators[operatorAddr] = true;
+      emit updateOperator(operatorAddr);
+    } else {
+      require(false, "unknown param");
+    }
+    emit paramChange(key, value);
+  }
+}
diff --git a/contracts/SystemReward.template b/contracts/SystemReward.template
index 8784188e..34c1f406 100644
--- a/contracts/SystemReward.template
+++ b/contracts/SystemReward.template
@@ -1,14 +1,16 @@
 pragma solidity 0.6.4;
+
 import "./System.sol";
+import "./lib/Memory.sol";
+import "./interface/IParamSubscriber.sol";
 import "./interface/ISystemReward.sol";
 
-contract SystemReward is System, ISystemReward{
+contract SystemReward is System, IParamSubscriber, ISystemReward {
   uint256 public constant MAX_REWARDS = 1e18;
 
   uint public numOperator;
   mapping(address => bool) operators;
 
-
   modifier doInit() {
     if (!alreadyInit) {
       operators[LIGHT_CLIENT_ADDR] = true;
@@ -19,19 +21,16 @@ contract SystemReward is System, ISystemReward{
     _;
   }
 
-
   modifier onlyOperator() {
     require(operators[msg.sender],"only operator is allowed to call the method");
     _;
   }
-  {% if mock %}
-  event newOperator(address indexed operator);
-  event deleteOperator(address indexed operator);
-  {% endif %}
+
   event rewardTo(address indexed to, uint256 amount);
   event rewardEmpty();
   event receiveDeposit(address indexed from, uint256 amount);
-
+  event updateOperator(address indexed operator);
+  event paramChange(string key, bytes value);
 
   receive() external payable{
     if (msg.value>0) {
@@ -39,35 +38,12 @@ contract SystemReward is System, ISystemReward{
     }
   }
 
-  {% if mock %}
-  modifier onlyOperatorExist(address _operator) {
-    require(operators[_operator], "the operator do not exist");
-    _;
-  }
-
-  modifier onlyOperatorNotExist(address _operator) {
-    require(!operators[_operator],"the operator already exist");
-    _;
-  }
-
-  function addOperator(address operator) external doInit onlyOperatorNotExist(operator) {
-    operators[operator] = true;
-    numOperator ++;
-    emit newOperator(operator);
-  }
-
-  function removeOperator(address operator) external doInit onlyOperatorExist(operator) {
-    delete operators[operator];
-    numOperator --;
-    emit deleteOperator(operator);
-  }
-  {% endif %}
   function claimRewards(address payable to, uint256 amount) external override(ISystemReward) doInit onlyOperator returns(uint256) {
     uint256 actualAmount = amount < address(this).balance ? amount : address(this).balance;
     if (actualAmount > MAX_REWARDS) {
       actualAmount = MAX_REWARDS;
     }
-    if (actualAmount>0) {
+    if (actualAmount != 0) {
       to.transfer(actualAmount);
       emit rewardTo(to, actualAmount);
     } else {
@@ -79,4 +55,20 @@ contract SystemReward is System, ISystemReward{
   function isOperator(address addr) external view returns (bool) {
     return operators[addr];
   }
-}
\ No newline at end of file
+
+  function updateParam(string calldata key, bytes calldata value) onlyGov external override {
+    if (Memory.compareStrings(key, "updateOperator")) {
+      bytes memory valueLocal = value;
+      require(valueLocal.length == 20, "length of value for updateOperator should be 20");
+      address operatorAddr;
+      assembly {
+        operatorAddr := mload(add(valueLocal, 20))
+      }
+      operators[operatorAddr] = true;
+      emit updateOperator(operatorAddr);
+    } else {
+      require(false, "unknown param");
+    }
+    emit paramChange(key, value);
+  }
+}
diff --git a/contracts/TendermintLightClient.sol b/contracts/TendermintLightClient.sol
index 418dbe32..d8db849c 100644
--- a/contracts/TendermintLightClient.sol
+++ b/contracts/TendermintLightClient.sol
@@ -57,7 +57,7 @@ contract TendermintLightClient is ILightClient, System, IParamSubscriber{
     emit initConsensusState(initialHeight, cs.appHash);
   }
 
-  function syncTendermintHeader(bytes calldata header, uint64 height) external onlyRelayer returns (bool) {
+  function syncTendermintHeader(bytes calldata header, uint64 height) external onlyRelayer onlyWhitelabelRelayer returns (bool) {
     require(submitters[height] == address(0x0), "can't sync duplicated header");
     require(height > initialHeight, "can't sync header before initialHeight");
 
diff --git a/contracts/TendermintLightClient.template b/contracts/TendermintLightClient.template
index 13511ed7..efdba652 100644
--- a/contracts/TendermintLightClient.template
+++ b/contracts/TendermintLightClient.template
@@ -57,7 +57,7 @@ contract TendermintLightClient is ILightClient, System, IParamSubscriber{
     emit initConsensusState(initialHeight, cs.appHash);
   }
 
-  function syncTendermintHeader(bytes calldata header, uint64 height) external onlyRelayer returns (bool) {
+  function syncTendermintHeader(bytes calldata header, uint64 height) external onlyRelayer onlyWhitelabelRelayer returns (bool) {
     require(submitters[height] == address(0x0), "can't sync duplicated header");
     require(height > initialHeight, "can't sync header before initialHeight");
 
diff --git a/contracts/TokenHub.sol b/contracts/TokenHub.sol
index 72a93e76..17a29e59 100644
--- a/contracts/TokenHub.sol
+++ b/contracts/TokenHub.sol
@@ -561,4 +561,12 @@ contract TokenHub is ITokenHub, System, IParamSubscriber, IApplication, ISystemR
     }
     return string(bep2Symbol);
   }
+
+  function withdrawStakingBNB(uint256 amount) external override returns(bool) {
+    require(msg.sender == STAKING_CONTRACT_ADDR, "only staking system contract can call this function");
+    if (amount != 0) {
+      payable(STAKING_CONTRACT_ADDR).transfer(amount);
+    }
+    return true;
+  }
 }
diff --git a/contracts/TokenHub.template b/contracts/TokenHub.template
index a2979006..7f4b4f8b 100644
--- a/contracts/TokenHub.template
+++ b/contracts/TokenHub.template
@@ -561,4 +561,12 @@ contract TokenHub is ITokenHub, System, IParamSubscriber, IApplication, ISystemR
     }
     return string(bep2Symbol);
   }
+
+  function withdrawStakingBNB(uint256 amount) external override returns(bool) {
+    require(msg.sender == STAKING_CONTRACT_ADDR, "only staking system contract can call this function");
+    if (amount != 0) {
+      payable(STAKING_CONTRACT_ADDR).transfer(amount);
+    }
+    return true;
+  }
 }
diff --git a/contracts/interface/IBSCValidatorSet.sol b/contracts/interface/IBSCValidatorSet.sol
index 9f7f0c0d..3a6f2407 100644
--- a/contracts/interface/IBSCValidatorSet.sol
+++ b/contracts/interface/IBSCValidatorSet.sol
@@ -1,6 +1,10 @@
 pragma solidity 0.6.4;
+pragma experimental ABIEncoderV2;
 
 interface IBSCValidatorSet {
   function misdemeanor(address validator) external;
   function felony(address validator)external;
-}
\ No newline at end of file
+  function isCurrentValidator(address validator) external view returns (bool);
+  function getLivingValidators() external view returns(address[] memory, bytes[] memory);
+  function getMiningValidators() external view returns(address[] memory, bytes[] memory);
+}
diff --git a/contracts/interface/ICrossChain.sol b/contracts/interface/ICrossChain.sol
index 893c09f8..ad887f15 100644
--- a/contracts/interface/ICrossChain.sol
+++ b/contracts/interface/ICrossChain.sol
@@ -5,4 +5,4 @@ interface ICrossChain {
      * @dev Send package to Binance Chain
      */
     function sendSynPackage(uint8 channelId, bytes calldata msgBytes, uint256 relayFee) external;
-}
\ No newline at end of file
+}
diff --git a/contracts/interface/ISlashIndicator.sol b/contracts/interface/ISlashIndicator.sol
index eb0f6f02..04f12b7d 100644
--- a/contracts/interface/ISlashIndicator.sol
+++ b/contracts/interface/ISlashIndicator.sol
@@ -2,4 +2,6 @@ pragma solidity 0.6.4;
 
 interface ISlashIndicator {
   function clean() external;
-}
\ No newline at end of file
+  function sendFelonyPackage(address validator) external;
+  function getSlashThresholds() external view returns (uint256, uint256);
+}
diff --git a/contracts/interface/IStaking.sol b/contracts/interface/IStaking.sol
new file mode 100644
index 00000000..d3358fba
--- /dev/null
+++ b/contracts/interface/IStaking.sol
@@ -0,0 +1,32 @@
+pragma solidity 0.6.4;
+
+interface IStaking {
+
+  function delegate(address validator, uint256 amount) external payable;
+
+  function undelegate(address validator, uint256 amount) external payable;
+
+  function redelegate(address validatorSrc, address validatorDst, uint256 amount) external payable;
+
+  function claimReward() external returns(uint256);
+
+  function claimUndelegated() external returns(uint256);
+
+  function getDelegated(address delegator, address validator) external view returns(uint256);
+
+  function getTotalDelegated(address delegator) external view returns(uint256);
+
+  function getDistributedReward(address delegator) external view returns(uint256);
+
+  function getPendingRedelegateTime(address delegator, address valSrc, address valDst)  external view returns(uint256);
+
+  function getUndelegated(address delegator) external view returns(uint256);
+
+  function getPendingUndelegateTime(address delegator, address validator) external view returns(uint256);
+
+  function getRelayerFee() external view returns(uint256);
+
+  function getMinDelegation() external view returns(uint256);
+
+  function getRequestInFly(address delegator) external view returns(uint256[3] memory);
+}
diff --git a/contracts/interface/ITokenHub.sol b/contracts/interface/ITokenHub.sol
index 429001af..ac935c74 100644
--- a/contracts/interface/ITokenHub.sol
+++ b/contracts/interface/ITokenHub.sol
@@ -19,6 +19,5 @@ interface ITokenHub {
   function batchTransferOutBNB(address[] calldata recipientAddrs, uint256[] calldata amounts, address[] calldata refundAddrs,
     uint64 expireTime) external payable returns (bool);
 
+  function withdrawStakingBNB(uint256 amount) external returns(bool);
 }
-
-
diff --git a/contracts/mock/MerkleProof.sol b/contracts/mock/MerkleProof.sol
deleted file mode 100644
index b021ce34..00000000
--- a/contracts/mock/MerkleProof.sol
+++ /dev/null
@@ -1,7 +0,0 @@
-pragma solidity 0.6.4;
-
-library MerkleProof {
-  function validateMerkleProof(bytes32 , string memory , bytes memory, bytes memory , bytes memory) internal pure returns (bool) {
-    return true;
-  }
-}
\ No newline at end of file
diff --git a/contracts/mock/MockLightClient.sol b/contracts/mock/MockLightClient.sol
deleted file mode 100644
index 4629c5c4..00000000
--- a/contracts/mock/MockLightClient.sol
+++ /dev/null
@@ -1,30 +0,0 @@
-pragma solidity 0.6.4;
-
-import "../interface/ILightClient.sol";
-
-contract MockLightClient is ILightClient{
-  bool blockNotSynced;
-  bool stateNotVerified;
-
-  function isHeaderSynced(uint64) external override(ILightClient) view returns (bool) {
-    return !blockNotSynced;
-  }
-
-  function getAppHash(uint64) external override(ILightClient) view returns (bytes32) {
-    return bytes32(0x0);
-  }
-
-  function init() public {}
-
-  function getSubmitter(uint64) external override(ILightClient) view returns (address payable) {
-    return address(0x0);
-  }
-
-  function setBlockNotSynced(bool notSynced) external{
-    blockNotSynced = notSynced;
-  }
-
-  function setStateNotVerified(bool notVerified) external{
-    stateNotVerified = notVerified;
-  }
-}
\ No newline at end of file
diff --git a/contracts/mock/MockRelayerHub.sol b/contracts/mock/MockRelayerHub.sol
deleted file mode 100644
index ec1520f6..00000000
--- a/contracts/mock/MockRelayerHub.sol
+++ /dev/null
@@ -1,10 +0,0 @@
-pragma solidity 0.6.4;
-
-import "../interface/IRelayerHub.sol";
-
-contract MockRelayerHub is IRelayerHub {
-
-  function isRelayer(address) external override view returns (bool) {
-    return true;
-  }
-}
diff --git a/contracts/mock/MockSystemReward.sol b/contracts/mock/MockSystemReward.sol
deleted file mode 100644
index 8069d758..00000000
--- a/contracts/mock/MockSystemReward.sol
+++ /dev/null
@@ -1,21 +0,0 @@
-pragma solidity 0.6.4;
-
-contract MockSystemReward {
-
-  event RewardTo(address indexed to, uint256 indexed amount);
-  event RewardEmpty();
-
-  constructor() public payable {
-
-  }
-
-  function claimRewards(address payable to, uint256 amount) public payable {
-    uint256 actualAmount = amount < address(this).balance ? amount : address(this).balance;
-    if (actualAmount>0) {
-      to.transfer(actualAmount);
-      emit RewardTo(to, actualAmount);
-    } else {
-      emit RewardEmpty();
-    }
-  }
-}
\ No newline at end of file
diff --git a/contracts/mock/MockTokenHub.sol b/contracts/mock/MockTokenHub.sol
index 5d569fcb..da7b83c7 100644
--- a/contracts/mock/MockTokenHub.sol
+++ b/contracts/mock/MockTokenHub.sol
@@ -37,6 +37,13 @@ contract MockTokenHub is ITokenHub {
   function setPanicBatchTransferOut(bool doPanic)external{
     panicBatchTransferOut = doPanic;
   }
-}
-
 
+  function withdrawStakingBNB(uint256 amount) external override returns(bool) {
+    address STAKING_CONTRACT_ADDR = address(0x0000000000000000000000000000000000002001);
+    require(msg.sender == STAKING_CONTRACT_ADDR, "only staking system contract can call this function");
+    if (amount != 0) {
+      payable(STAKING_CONTRACT_ADDR).transfer(amount);
+    }
+    return true;
+  }
+}
diff --git a/foundry.toml b/foundry.toml
new file mode 100644
index 00000000..10bde931
--- /dev/null
+++ b/foundry.toml
@@ -0,0 +1,41 @@
+[profile.default]
+src = 'contracts'
+test = 'test'
+script = 'script'
+out = 'out'
+fs_permissions = [{ access = "read-write", path = "./" }]
+libs = ['lib', 'node_modules']
+remappings = [
+    'ds-test/=lib/forge-std/lib/ds-test/src/',
+    'forge-std/=lib/forge-std/src/',
+    'openzeppelin-solidity/=node_modules/openzeppelin-solidity/',
+]
+cache = true
+cache_path = 'cache'
+auto_detect_solc = true
+optimizer = true
+optimizer_runs = 200
+verbosity = 3
+ignored_error_codes = [1878, 5574, 5667]
+ffi = true
+initial_balance = '0xffffffffffffffffffffffff'
+
+[profile.default.rpc_storage_caching]
+chains = 'all'
+endpoints = 'all'
+
+[fuzz]
+runs = 1024
+
+[fmt]
+line_length = 240
+tab_width = 2
+bracket_spacing = false
+int_types = 'long'
+func_attrs_with_params_multiline = true
+quote_style = 'double'
+number_underscore = 'preserve'
+
+[rpc_endpoints]
+bsc = "${RPC_BSC}" # set by .env
+local = "http://127.0.0.1:8545"
diff --git a/generate-genesis.js b/generate-genesis.js
index 1c4cacbc..2e25c487 100644
--- a/generate-genesis.js
+++ b/generate-genesis.js
@@ -19,6 +19,10 @@ program.option(
     ""
 )
 
+program.option("--network <network>",
+    "network",
+    "mainnet");
+
 program.option(
     "--initBurnRatio <initBurnRatio>",
     "initBurnRatio",
@@ -38,6 +42,8 @@ require("./generate-tendermintlightclient");
 require("./generate-relayerincentivizecontract");
 require("./generate-crosschain");
 require("./generate-slash");
+require("./generate-relayerhub");
+require("./generate-staking");
 
 program.version("0.0.1")
 program.option(
@@ -139,6 +145,11 @@ Promise.all([
       "crossChain",
       "contracts/CrossChain.sol",
       "CrossChain"
+  ),
+  compileContract(
+    "staking",
+    "contracts/Staking.sol",
+    "Staking"
   )
 ]).then(result => {
 
diff --git a/generate-relayerhub.js b/generate-relayerhub.js
new file mode 100644
index 00000000..7a62f56c
--- /dev/null
+++ b/generate-relayerhub.js
@@ -0,0 +1,31 @@
+const program = require("commander");
+const fs = require("fs");
+const nunjucks = require("nunjucks");
+
+program.version("0.0.1");
+program.option(
+    "-t, --template <template>",
+    "RelayerHub template file",
+    "./contracts/RelayerHub.template"
+);
+
+program.option(
+    "-o, --output <output-file>",
+    "RelayerHub.sol",
+    "./contracts/RelayerHub.sol"
+)
+program.option("--mock <mock>",
+    "if use mock",
+    false);
+
+
+program.parse(process.argv);
+
+const data = {
+  mock: program.mock,
+};
+
+const templateString = fs.readFileSync(program.template).toString();
+const resultString = nunjucks.renderString(templateString, data);
+fs.writeFileSync(program.output, resultString);
+console.log("RelayerHub file updated.");
diff --git a/generate-staking.js b/generate-staking.js
new file mode 100644
index 00000000..6ba2540c
--- /dev/null
+++ b/generate-staking.js
@@ -0,0 +1,31 @@
+const program = require("commander");
+const fs = require("fs");
+const nunjucks = require("nunjucks");
+
+program.version("0.0.1");
+program.option(
+	"-t, --template <template>",
+	"staking template file",
+	"./contracts/Staking.template"
+);
+
+program.option(
+	"-o, --output <output-file>",
+	"Staking.sol",
+	"./contracts/Staking.sol"
+)
+
+program.option("--mock <mock>",
+	"if use mock",
+	false);
+
+program.parse(process.argv);
+
+const data = {
+	mock: program.mock,
+};
+
+const templateString = fs.readFileSync(program.template).toString();
+const resultString = nunjucks.renderString(templateString, data);
+fs.writeFileSync(program.output, resultString);
+console.log("Staking file updated.");
diff --git a/generate-system.js b/generate-system.js
index 955614f3..a42c90cb 100644
--- a/generate-system.js
+++ b/generate-system.js
@@ -14,6 +14,10 @@ program.option(
     "System.sol",
     "./contracts/System.sol"
 )
+program.option("--network <network>",
+    "network",
+    "mainnet");
+
 program.option("--mock <mock>",
     "if use mock",
     false);
@@ -28,6 +32,7 @@ const data = {
   fromChainId: program.fromChainId,
   bscChainId: program.bscChainId,
   mock: program.mock,
+  network: program.network,
 };
 const templateString = fs.readFileSync(program.template).toString();
 const resultString = nunjucks.renderString(templateString, data);
diff --git a/generate-validator.js b/generate-validator.js
index b23556fb..7246b684 100644
--- a/generate-validator.js
+++ b/generate-validator.js
@@ -1,10 +1,11 @@
 const fs = require("fs");
 const readline = require('readline');
 const nunjucks = require("nunjucks");
-
+const BLSKeys = require("./BLSkeystore.json");
 
 async function processValidatorConf() {
-  const fileStream = fs.createReadStream(__dirname + '/validators.conf');
+  const fileStream = fs.createReadStream(__dirname + "/validators.conf");
+  const publicKey = BLSKeys.public_key;
 
   const rl = readline.createInterface({
     input: fileStream,
@@ -19,14 +20,16 @@ async function processValidatorConf() {
       feeAddr: vs[1],
       bscFeeAddr: vs[2],
       votingPower: vs[3],
-    })
+      bLSPublicKey: "0x" + publicKey.pop()
+    });
   }
   return validators
 }
 
-processValidatorConf().then(function (validators) {
+processValidatorConf().then(function (validators, bLSPublicKeys) {
   const data = {
-    validators: validators
+    validators: validators,
+    bLSPublicKeys: bLSPublicKeys,
   };
   const templateString = fs.readFileSync(__dirname + '/validators.template').toString();
   const resultString = nunjucks.renderString(templateString, data);
diff --git a/genesis-template.json b/genesis-template.json
index ad3fd015..50190ae9 100644
--- a/genesis-template.json
+++ b/genesis-template.json
@@ -13,6 +13,11 @@
     "muirGlacierBlock": 0,
     "ramanujanBlock": 0,
     "nielsBlock": 0,
+    "mirrorSyncBlock":1,
+    "brunoBlock": 1,
+    "eulerBlock": 2,
+    "bonehBlock": 3,
+    "lynnBlock": 4,
     "parlia": {
       "period": 3,
       "epoch": 200
@@ -68,6 +73,16 @@
     "0x0000000000000000000000000000000000002000": {
       "balance": "0x0",
       "code": "0x{{crossChain}}"
+    },
+    "0x0000000000000000000000000000000000002001": {
+      "balance": "0x0",
+      "code": "0x{{staking}}"
+    },
+    "0x88cb4D8F77742c24d647BEf8049D3f3C56067cDD": {
+      "balance": "0x100000000000000000000"
+    },
+    "0x42D596440775C90db8d9187b47650986E1063493": {
+      "balance": "0x1000000000000000000000"
     }{% for v in initHolders %},
     "{{ v.address.replace('0x', '') }}": {
       "balance": "0x{{ v.balance }}"
diff --git a/genesis.json b/genesis.json
index 897fbd00..1ead3a93 100644
--- a/genesis.json
+++ b/genesis.json
@@ -13,6 +13,11 @@
     "muirGlacierBlock": 0,
     "ramanujanBlock": 0,
     "nielsBlock": 0,
+    "mirrorSyncBlock":1,
+    "brunoBlock": 1,
+    "eulerBlock": 2,
+    "bonehBlock": 3,
+    "lynnBlock": 4,
     "parlia": {
       "period": 3,
       "epoch": 200
@@ -20,7 +25,7 @@
   },
   "nonce": "0x0",
   "timestamp": "0x5e9da7ce",
-  "extraData": "0x00000000000000000000000000000000000000000000000000000000000000009fb29aac15b9a4b7f17c3385939b007540f4d7910000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+  "extraData": "0x00000000000000000000000000000000000000000000000000000000000000009fb29aac15b9a4b7f17c3385939b007540f4d79185e6972fc98cd3c81d64d40e325acfed44365b97a7567a27939c14dbc7512ddcf54cb1284eb637cfa308ae4e00cb55880000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
   "gasLimit": "0x2625a00",
   "difficulty": "0x1",
   "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
@@ -31,46 +36,56 @@
     },
     "0x0000000000000000000000000000000000001000": {
       "balance": "0x0",
-      "code": "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+    },
+    "0x88cb4D8F77742c24d647BEf8049D3f3C56067cDD": {
+      "balance": "0x100000000000000000000"
+    },
+    "0x42D596440775C90db8d9187b47650986E1063493": {
+      "balance": "0x1000000000000000000000"
     },
     "9fB29AAc15b9A4B7F17c3385939b007540f4d791": {
-      "balance": "0x21e19e0c9bab2400000"
+      "balance": "0x84595161401484a000000"
     }
   },
   "number": "0x0",
diff --git a/init_holders.js b/init_holders.js
index 8f4351bd..d2674baa 100644
--- a/init_holders.js
+++ b/init_holders.js
@@ -3,7 +3,7 @@ const init_holders = [
   {
     // private key is 0x9b28f36fbd67381120752d6172ecdcf10e06ab2d9a1367aac00cdcd6ac7855d3, only use in dev
     address: "0x9fB29AAc15b9A4B7F17c3385939b007540f4d791",
-    balance: web3.utils.toBN("10000000000000000000000").toString("hex")
+    balance: web3.utils.toBN("10000000000000000000000000").toString("hex")
   }
   // {
   //   address: "0x6c468CF8c9879006E22EC4029696E005C2319C9D",
diff --git a/lib/Deployer.sol b/lib/Deployer.sol
new file mode 100644
index 00000000..9d3e567c
--- /dev/null
+++ b/lib/Deployer.sol
@@ -0,0 +1,161 @@
+pragma solidity 0.8.16;
+
+import "forge-std/Test.sol";
+import "./interface/IBSCValidatorSet.sol";
+import "./interface/ICrossChain.sol";
+import "./interface/IGovHub.sol";
+import "./interface/IRelayerHub.sol";
+import "./interface/IRelayerIncentivize.sol";
+import "./interface/ISlashIndicator.sol";
+import "./interface/IStaking.sol";
+import "./interface/ISystemReward.sol";
+import "./interface/ITokenHub.sol";
+import "./interface/ITokenManager.sol";
+import "./interface/ITendermintLightClient.sol";
+import "../lib/RLPEncode.sol";
+import "../lib/RLPDecode.sol";
+
+contract Deployer is Test {
+  using RLPEncode for *;
+
+  // system contract address
+  address public constant VALIDATOR_CONTRACT_ADDR = 0x0000000000000000000000000000000000001000;
+  address public constant SLASH_CONTRACT_ADDR = 0x0000000000000000000000000000000000001001;
+  address public constant SYSTEM_REWARD_ADDR = 0x0000000000000000000000000000000000001002;
+  address public constant LIGHT_CLIENT_ADDR = 0x0000000000000000000000000000000000001003;
+  address public constant TOKEN_HUB_ADDR = 0x0000000000000000000000000000000000001004;
+  address public constant INCENTIVIZE_ADDR = 0x0000000000000000000000000000000000001005;
+  address public constant RELAYERHUB_CONTRACT_ADDR = 0x0000000000000000000000000000000000001006;
+  address public constant GOV_HUB_ADDR = 0x0000000000000000000000000000000000001007;
+  address public constant TOKEN_MANAGER_ADDR = 0x0000000000000000000000000000000000001008;
+  address public constant CROSS_CHAIN_CONTRACT_ADDR = 0x0000000000000000000000000000000000002000;
+  address public constant STAKING_CONTRACT_ADDR = 0x0000000000000000000000000000000000002001;
+
+  uint8 public constant BIND_CHANNELID = 0x01;
+  uint8 public constant TRANSFER_IN_CHANNELID = 0x02;
+  uint8 public constant TRANSFER_OUT_CHANNELID = 0x03;
+  uint8 public constant MIRROR_CHANNELID = 0x04;
+  uint8 public constant SYNC_CHANNELID = 0x05;
+  uint8 public constant STAKING_CHANNELID = 0x08;
+  uint8 public constant GOV_CHANNELID = 0x09;
+  uint8 public constant SLASH_CHANNELID = 0x0b;
+  uint8 public constant CROSS_STAKE_CHANNELID = 0x10;
+
+  BSCValidatorSet public validator;
+  SlashIndicator public slash;
+  SystemReward public systemReward;
+  TendermintLightClient public lightClient;
+  TokenHub public tokenHub;
+  RelayerIncentivize public incentivize;
+  RelayerHub public relayerHub;
+  GovHub public govHub;
+  TokenManager public tokenManager;
+  CrossChain public crossChain;
+  Staking public staking;
+
+  address payable public relayer;
+  address payable[] public addrSet;
+  uint256 public addrIdx;
+
+  bytes32 internal nextUser = keccak256(abi.encodePacked("user address"));
+
+  constructor() {
+    // create fork
+    // you should modify this for your own test, which generally should be the bsc mainnet latest number
+    vm.createSelectFork("bsc", 23839447);
+
+    validator = BSCValidatorSet(VALIDATOR_CONTRACT_ADDR);
+    vm.label(address(validator), "Validator");
+    slash = SlashIndicator(SLASH_CONTRACT_ADDR);
+    vm.label(address(slash), "SlashIndicator");
+    systemReward = SystemReward(SYSTEM_REWARD_ADDR);
+    vm.label(address(systemReward), "SystemReward");
+    lightClient = TendermintLightClient(LIGHT_CLIENT_ADDR);
+    vm.label(address(lightClient), "LightClient");
+    tokenHub = TokenHub(TOKEN_HUB_ADDR);
+    vm.label(address(tokenHub), "TokenHub");
+    incentivize = RelayerIncentivize(INCENTIVIZE_ADDR);
+    vm.label(address(incentivize), "RelayerIncentivize");
+    relayerHub = RelayerHub(RELAYERHUB_CONTRACT_ADDR);
+    vm.label(address(relayerHub), "RelayerHub");
+    govHub = GovHub(GOV_HUB_ADDR);
+    vm.label(address(govHub), "GovHub");
+    tokenManager = TokenManager(TOKEN_MANAGER_ADDR);
+    vm.label(address(tokenManager), "TokenManager");
+    crossChain = CrossChain(CROSS_CHAIN_CONTRACT_ADDR);
+    vm.label(address(crossChain), "CrossChain");
+    staking = Staking(STAKING_CONTRACT_ADDR);
+    vm.label(address(staking), "Staking");
+
+    addrSet = createUsers(100);
+
+    relayer = payable(0xb005741528b86F5952469d80A8614591E3c5B632); // whitelabel relayer
+    vm.label(relayer, "relayer");
+  }
+
+  // create users with 1,000,000 ether balance
+  function createUsers(uint256 userNum) public returns (address payable[] memory) {
+    address payable[] memory users = new address payable[](userNum);
+    for (uint256 i = 0; i < userNum; i++) {
+      address payable user = _getNextUserAddress();
+      vm.deal(user, 1_000_000 ether);
+      users[i] = user;
+    }
+    return users;
+  }
+
+  function _getNextUserAddress() internal returns (address payable) {
+    //bytes32 to address conversion
+    address payable user = payable(address(uint160(uint256(nextUser))));
+    nextUser = keccak256(abi.encodePacked(nextUser));
+    return user;
+  }
+
+  function updateParamByGovHub(bytes memory key, bytes memory value, address addr) public {
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = key.encodeBytes();
+    elements[1] = value.encodeBytes();
+    elements[2] = addr.encodeAddress();
+
+    vm.startPrank(address(crossChain));
+    govHub.handleSynPackage(GOV_CHANNELID, elements.encodeList());
+    vm.stopPrank();
+  }
+
+  function encodeOldValidatorSetUpdatePack(uint8 code, address[] memory valSet) internal pure returns (bytes memory) {
+    bytes[] memory elements = new bytes[](2);
+    elements[0] = code.encodeUint();
+
+    bytes[] memory vals = new bytes[](valSet.length);
+    for (uint256 i; i < valSet.length; ++i) {
+      bytes[] memory tmp = new bytes[](4);
+      tmp[0] = valSet[i].encodeAddress();
+      tmp[1] = valSet[i].encodeAddress();
+      tmp[2] = valSet[i].encodeAddress();
+      tmp[3] = uint8(0x64).encodeUint();
+      vals[i] = tmp.encodeList();
+    }
+
+    elements[1] = vals.encodeList();
+    return elements.encodeList();
+  }
+
+  function encodeNewValidatorSetUpdatePack(uint8 code, address[] memory valSet, bytes[] memory voteAddrs) internal pure returns (bytes memory) {
+    bytes[] memory elements = new bytes[](2);
+    elements[0] = code.encodeUint();
+
+    bytes[] memory vals = new bytes[](valSet.length);
+    for (uint256 i; i < valSet.length; ++i) {
+      bytes[] memory tmp = new bytes[](5);
+      tmp[0] = valSet[i].encodeAddress();
+      tmp[1] = valSet[i].encodeAddress();
+      tmp[2] = valSet[i].encodeAddress();
+      tmp[3] = uint8(0x64).encodeUint();
+      tmp[4] = voteAddrs[i].encodeBytes();
+      vals[i] = tmp.encodeList();
+    }
+
+    elements[1] = vals.encodeList();
+    return elements.encodeList();
+  }
+}
diff --git a/lib/RLPDecode.sol b/lib/RLPDecode.sol
new file mode 100644
index 00000000..271c6029
--- /dev/null
+++ b/lib/RLPDecode.sol
@@ -0,0 +1,275 @@
+pragma solidity ^0.8.10;
+
+library RLPDecode {
+    uint8 constant STRING_SHORT_START = 0x80;
+    uint8 constant STRING_LONG_START  = 0xb8;
+    uint8 constant LIST_SHORT_START   = 0xc0;
+    uint8 constant LIST_LONG_START    = 0xf8;
+
+    uint8 constant WORD_SIZE = 32;
+
+    struct RLPItem {
+        uint len;
+        uint memPtr;
+    }
+
+    struct Iterator {
+        RLPItem item;   // Item that's being iterated over.
+        uint nextPtr;   // Position of the next item in the list.
+    }
+
+    function next(Iterator memory self) internal pure returns (RLPItem memory) {
+        require(hasNext(self));
+
+        uint ptr = self.nextPtr;
+        uint itemLength = _itemLength(ptr);
+        self.nextPtr = ptr + itemLength;
+
+        return RLPItem(itemLength, ptr);
+    }
+
+    function hasNext(Iterator memory self) internal pure returns (bool) {
+        RLPItem memory item = self.item;
+        return self.nextPtr < item.memPtr + item.len;
+    }
+
+    function toRLPItem(bytes memory self) internal pure returns (RLPItem memory) {
+        uint memPtr;
+        assembly {
+            memPtr := add(self, 0x20)
+        }
+
+        return RLPItem(self.length, memPtr);
+    }
+
+    function iterator(RLPItem memory self) internal pure returns (Iterator memory) {
+        require(isList(self));
+
+        uint ptr = self.memPtr + _payloadOffset(self.memPtr);
+        return Iterator(self, ptr);
+    }
+
+    function rlpLen(RLPItem memory item) internal pure returns (uint) {
+        return item.len;
+    }
+
+    function payloadLen(RLPItem memory item) internal pure returns (uint) {
+        return item.len - _payloadOffset(item.memPtr);
+    }
+
+    function toList(RLPItem memory item) internal pure returns (RLPItem[] memory) {
+        require(isList(item));
+
+        uint items = numItems(item);
+        RLPItem[] memory result = new RLPItem[](items);
+
+        uint memPtr = item.memPtr + _payloadOffset(item.memPtr);
+        uint dataLen;
+        for (uint i = 0; i < items; i++) {
+            dataLen = _itemLength(memPtr);
+            result[i] = RLPItem(dataLen, memPtr);
+            memPtr = memPtr + dataLen;
+        }
+
+        return result;
+    }
+
+    function isList(RLPItem memory item) internal pure returns (bool) {
+        if (item.len == 0) return false;
+
+        uint8 byte0;
+        uint memPtr = item.memPtr;
+        assembly {
+            byte0 := byte(0, mload(memPtr))
+        }
+
+        if (byte0 < LIST_SHORT_START)
+            return false;
+        return true;
+    }
+
+    function toRlpBytes(RLPItem memory item) internal pure returns (bytes memory) {
+        bytes memory result = new bytes(item.len);
+        if (result.length == 0) return result;
+
+        uint ptr;
+        assembly {
+            ptr := add(0x20, result)
+        }
+
+        copy(item.memPtr, ptr, item.len);
+        return result;
+    }
+
+    function toBoolean(RLPItem memory item) internal pure returns (bool) {
+        require(item.len == 1);
+        uint result;
+        uint memPtr = item.memPtr;
+        assembly {
+            result := byte(0, mload(memPtr))
+        }
+
+        return result == 0 ? false : true;
+    }
+
+    function toAddress(RLPItem memory item) internal pure returns (address) {
+        // 1 byte for the length prefix
+        require(item.len == 21);
+
+        return address(uint160(toUint(item)));
+    }
+
+    function toUint(RLPItem memory item) internal pure returns (uint) {
+        require(item.len > 0 && item.len <= 33);
+
+        uint offset = _payloadOffset(item.memPtr);
+        require(item.len >= offset, "length is less than offset");
+        uint len = item.len - offset;
+
+        uint result;
+        uint memPtr = item.memPtr + offset;
+        assembly {
+            result := mload(memPtr)
+
+        // shfit to the correct location if neccesary
+            if lt(len, 32) {
+                result := div(result, exp(256, sub(32, len)))
+            }
+        }
+
+        return result;
+    }
+
+    // enforces 32 byte length
+    function toUintStrict(RLPItem memory item) internal pure returns (uint) {
+        // one byte prefix
+        require(item.len == 33);
+
+        uint result;
+        uint memPtr = item.memPtr + 1;
+        assembly {
+            result := mload(memPtr)
+        }
+
+        return result;
+    }
+
+    function toBytes(RLPItem memory item) internal pure returns (bytes memory) {
+        require(item.len > 0);
+
+        uint offset = _payloadOffset(item.memPtr);
+        uint len = item.len - offset; // data length
+        bytes memory result = new bytes(len);
+
+        uint destPtr;
+        assembly {
+            destPtr := add(0x20, result)
+        }
+
+        copy(item.memPtr + offset, destPtr, len);
+        return result;
+    }
+
+    function numItems(RLPItem memory item) private pure returns (uint) {
+        if (item.len == 0) return 0;
+
+        uint count = 0;
+        uint currPtr = item.memPtr + _payloadOffset(item.memPtr);
+        uint endPtr = item.memPtr + item.len;
+        while (currPtr < endPtr) {
+            currPtr = currPtr + _itemLength(currPtr); // skip over an item
+            count++;
+        }
+
+        return count;
+    }
+
+    function _itemLength(uint memPtr) private pure returns (uint) {
+        uint itemLen;
+        uint byte0;
+        assembly {
+            byte0 := byte(0, mload(memPtr))
+        }
+
+        if (byte0 < STRING_SHORT_START)
+            itemLen = 1;
+
+        else if (byte0 < STRING_LONG_START)
+            itemLen = byte0 - STRING_SHORT_START + 1;
+
+        else if (byte0 < LIST_SHORT_START) {
+            uint dataLen;
+            assembly {
+                let byteLen := sub(byte0, 0xb7) // # of bytes the actual length is
+                memPtr := add(memPtr, 1) // skip over the first byte
+
+                /* 32 byte word size */
+                dataLen := div(mload(memPtr), exp(256, sub(32, byteLen))) // right shifting to get the len
+                itemLen := add(dataLen, add(byteLen, 1))
+            }
+            require(itemLen >= dataLen, "addition overflow");
+        }
+
+        else if (byte0 < LIST_LONG_START) {
+            itemLen = byte0 - LIST_SHORT_START + 1;
+        }
+
+        else {
+            uint dataLen;
+            assembly {
+                let byteLen := sub(byte0, 0xf7)
+                memPtr := add(memPtr, 1)
+
+                dataLen := div(mload(memPtr), exp(256, sub(32, byteLen))) // right shifting to the correct length
+                itemLen := add(dataLen, add(byteLen, 1))
+            }
+            require(itemLen >= dataLen, "addition overflow");
+        }
+
+        return itemLen;
+    }
+
+    // @return number of bytes until the data
+    function _payloadOffset(uint memPtr) private pure returns (uint) {
+        uint byte0;
+        assembly {
+            byte0 := byte(0, mload(memPtr))
+        }
+
+        if (byte0 < STRING_SHORT_START)
+            return 0;
+        else if (byte0 < STRING_LONG_START || (byte0 >= LIST_SHORT_START && byte0 < LIST_LONG_START))
+            return 1;
+        else if (byte0 < LIST_SHORT_START)  // being explicit
+            return byte0 - (STRING_LONG_START - 1) + 1;
+        else
+            return byte0 - (LIST_LONG_START - 1) + 1;
+    }
+
+    /*
+    * @param src Pointer to source
+    * @param dest Pointer to destination
+    * @param len Amount of memory to copy from the source
+    */
+    function copy(uint src, uint dest, uint len) private pure {
+        if (len == 0) return;
+
+        // copy as many word sizes as possible
+        for (; len >= WORD_SIZE; len -= WORD_SIZE) {
+            assembly {
+                mstore(dest, mload(src))
+            }
+
+            src += WORD_SIZE;
+            dest += WORD_SIZE;
+        }
+
+        // left over bytes. Mask is used to remove unwanted bytes from the word
+        uint mask = 256 ** (WORD_SIZE - len) - 1;
+        assembly {
+            let srcpart := and(mload(src), not(mask)) // zero out src
+            let destpart := and(mload(dest), mask) // retrieve the bytes
+            mstore(dest, or(destpart, srcpart))
+        }
+    }
+}
\ No newline at end of file
diff --git a/lib/RLPEncode.sol b/lib/RLPEncode.sol
new file mode 100644
index 00000000..6d33a098
--- /dev/null
+++ b/lib/RLPEncode.sol
@@ -0,0 +1,216 @@
+pragma solidity ^0.8.10;
+
+library RLPEncode {
+
+    uint8 constant STRING_OFFSET = 0x80;
+    uint8 constant LIST_OFFSET = 0xc0;
+
+    /**
+     * @notice Encode string item
+     * @param self The string (ie. byte array) item to encode
+     * @return The RLP encoded string in bytes
+     */
+    function encodeBytes(bytes memory self) internal pure returns (bytes memory) {
+        if (self.length == 1 && self[0] <= 0x7f) {
+            return self;
+        }
+        return mergeBytes(encodeLength(self.length, STRING_OFFSET), self);
+    }
+
+    /**
+     * @notice Encode address
+     * @param self The address to encode
+     * @return The RLP encoded address in bytes
+     */
+    function encodeAddress(address self) internal pure returns (bytes memory) {
+        bytes memory b;
+        assembly {
+            b := mload(0x40)
+            mstore(b, 0x20)
+            mstore(add(b, 20), xor(0x140000000000000000000000000000000000000000, self))
+            mstore(0x40, add(b, 0x40))
+        }
+        return encodeBytes(b);
+    }
+
+    /**
+     * @notice Encode uint
+     * @param self The uint to encode
+     * @return The RLP encoded uint in bytes
+     */
+    function encodeUint(uint self) internal pure returns (bytes memory) {
+        return encodeBytes(toBinary(self));
+    }
+
+    /**
+     * @notice Encode int
+     * @param self The int to encode
+     * @return The RLP encoded int in bytes
+     */
+    function encodeInt(int self) internal pure returns (bytes memory) {
+        return encodeUint(uint(self));
+    }
+
+    /**
+     * @notice Encode bool
+     * @param self The bool to encode
+     * @return The RLP encoded bool in bytes
+     */
+    function encodeBool(bool self) internal pure returns (bytes memory) {
+        bytes memory rs = new bytes(1);
+        if (self) {
+            rs[0] = bytes1(uint8(1));
+        }
+        return rs;
+    }
+
+    /**
+     * @notice Encode list of items
+     * @param self The list of items to encode, each item in list must be already encoded
+     * @return The RLP encoded list of items in bytes
+     */
+    function encodeList(bytes[] memory self) internal pure returns (bytes memory) {
+        if (self.length == 0) {
+            return new bytes(0);
+        }
+        bytes memory payload = self[0];
+        for (uint i = 1; i < self.length; i++) {
+            payload = mergeBytes(payload, self[i]);
+        }
+        return mergeBytes(encodeLength(payload.length, LIST_OFFSET), payload);
+    }
+
+    /**
+     * @notice Concat two bytes arrays
+     * @param _preBytes The first bytes array
+     * @param _postBytes The second bytes array
+     * @return The merged bytes array
+     */
+    function mergeBytes(
+        bytes memory _preBytes,
+        bytes memory _postBytes
+    )
+    internal
+    pure
+    returns (bytes memory)
+    {
+        bytes memory tempBytes;
+
+        assembly {
+        // Get a location of some free memory and store it in tempBytes as
+        // Solidity does for memory variables.
+            tempBytes := mload(0x40)
+
+        // Store the length of the first bytes array at the beginning of
+        // the memory for tempBytes.
+            let length := mload(_preBytes)
+            mstore(tempBytes, length)
+
+        // Maintain a memory counter for the current write location in the
+        // temp bytes array by adding the 32 bytes for the array length to
+        // the starting location.
+            let mc := add(tempBytes, 0x20)
+        // Stop copying when the memory counter reaches the length of the
+        // first bytes array.
+            let end := add(mc, length)
+
+            for {
+            // Initialize a copy counter to the start of the _preBytes data,
+            // 32 bytes into its memory.
+                let cc := add(_preBytes, 0x20)
+            } lt(mc, end) {
+            // Increase both counters by 32 bytes each iteration.
+                mc := add(mc, 0x20)
+                cc := add(cc, 0x20)
+            } {
+            // Write the _preBytes data into the tempBytes memory 32 bytes
+            // at a time.
+                mstore(mc, mload(cc))
+            }
+
+        // Add the length of _postBytes to the current length of tempBytes
+        // and store it as the new length in the first 32 bytes of the
+        // tempBytes memory.
+            length := mload(_postBytes)
+            mstore(tempBytes, add(length, mload(tempBytes)))
+
+        // Move the memory counter back from a multiple of 0x20 to the
+        // actual end of the _preBytes data.
+            mc := end
+        // Stop copying when the memory counter reaches the new combined
+        // length of the arrays.
+            end := add(mc, length)
+
+            for {
+                let cc := add(_postBytes, 0x20)
+            } lt(mc, end) {
+                mc := add(mc, 0x20)
+                cc := add(cc, 0x20)
+            } {
+                mstore(mc, mload(cc))
+            }
+
+        // Update the free-memory pointer by padding our last write location
+        // to 32 bytes: add 31 bytes to the end of tempBytes to move to the
+        // next 32 byte block, then round down to the nearest multiple of
+        // 32. If the sum of the length of the two arrays is zero then add
+        // one before rounding down to leave a blank 32 bytes (the length block with 0).
+            mstore(0x40, and(
+            add(add(end, iszero(add(length, mload(_preBytes)))), 31),
+            not(31) // Round down to the nearest 32 bytes.
+            ))
+        }
+
+        return tempBytes;
+    }
+
+    /**
+     * @notice Encode the first byte, followed by the `length` in binary form if `length` is more than 55.
+     * @param length The length of the string or the payload
+     * @param offset `STRING_OFFSET` if item is string, `LIST_OFFSET` if item is list
+     * @return RLP encoded bytes
+     */
+    function encodeLength(uint length, uint offset) internal pure returns (bytes memory) {
+        require(length < 256**8, "input too long");
+        bytes memory rs = new bytes(1);
+        if (length <= 55) {
+            rs[0] = bytes1(uint8(length + offset));
+            return rs;
+        }
+        bytes memory bl = toBinary(length);
+        rs[0] = bytes1(uint8(bl.length + offset + 55));
+        return mergeBytes(rs, bl);
+    }
+
+    /**
+     * @notice Encode integer in big endian binary form with no leading zeroes
+     * @param x The integer to encode
+     * @return RLP encoded bytes
+     */
+    function toBinary(uint x) internal pure returns (bytes memory) {
+        bytes memory b = new bytes(32);
+        assembly {
+            mstore(add(b, 32), x)
+        }
+        uint i;
+        if (x & 0xffffffffffffffffffffffffffffffffffffffffffffffff0000000000000000 == 0) {
+            i = 24;
+        } else if (x & 0xffffffffffffffffffffffffffffffff00000000000000000000000000000000 == 0) {
+            i = 16;
+        } else {
+            i = 0;
+        }
+        for (; i < 32; i++) {
+            if (b[i] != 0) {
+                break;
+            }
+        }
+        uint length = 32 - i;
+        bytes memory rs = new bytes(length);
+        assembly {
+            mstore(add(rs, length), x)
+            mstore(rs, length)
+        }
+        return rs;
+    }
+}
\ No newline at end of file
diff --git a/lib/interface/IABCToken.sol b/lib/interface/IABCToken.sol
new file mode 100644
index 00000000..dae35f66
--- /dev/null
+++ b/lib/interface/IABCToken.sol
@@ -0,0 +1,26 @@
+pragma solidity ^0.8.10;
+
+interface ABCToken {
+    event Approval(address indexed owner, address indexed spender, uint256 value);
+    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+    function _decimals() external view returns (uint8);
+    function _name() external view returns (string memory);
+    function _symbol() external view returns (string memory);
+    function allowance(address owner, address spender) external view returns (uint256);
+    function approve(address spender, uint256 amount) external returns (bool);
+    function balanceOf(address account) external view returns (uint256);
+    function decimals() external view returns (uint8);
+    function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
+    function getOwner() external view returns (address);
+    function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
+    function name() external view returns (string memory);
+    function owner() external view returns (address);
+    function renounceOwnership() external;
+    function symbol() external view returns (string memory);
+    function totalSupply() external view returns (uint256);
+    function transfer(address recipient, uint256 amount) external returns (bool);
+    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
+    function transferOwnership(address newOwner) external;
+}
diff --git a/lib/interface/IBSCValidatorSet.sol b/lib/interface/IBSCValidatorSet.sol
new file mode 100644
index 00000000..350dba8a
--- /dev/null
+++ b/lib/interface/IBSCValidatorSet.sol
@@ -0,0 +1,116 @@
+pragma solidity ^0.8.10;
+
+interface BSCValidatorSet {
+    event batchTransfer(uint256 amount);
+    event batchTransferFailed(uint256 indexed amount, string reason);
+    event batchTransferLowerFailed(uint256 indexed amount, bytes reason);
+    event deprecatedDeposit(address indexed validator, uint256 amount);
+    event deprecatedFinalityRewardDeposit(address indexed validator, uint256 amount);
+    event directTransfer(address indexed validator, uint256 amount);
+    event directTransferFail(address indexed validator, uint256 amount);
+    event failReasonWithStr(string message);
+    event feeBurned(uint256 amount);
+    event finalityRewardDeposit(address indexed validator, uint256 amount);
+    event paramChange(string key, bytes value);
+    event systemTransfer(uint256 amount);
+    event unexpectedPackage(uint8 channelId, bytes msgBytes);
+    event validatorDeposit(address indexed validator, uint256 amount);
+    event validatorEmptyJailed(address indexed validator);
+    event validatorEnterMaintenance(address indexed validator);
+    event validatorExitMaintenance(address indexed validator);
+    event validatorFelony(address indexed validator, uint256 amount);
+    event validatorJailed(address indexed validator);
+    event validatorMisdemeanor(address indexed validator, uint256 amount);
+    event validatorSetUpdated();
+
+    function BIND_CHANNELID() external view returns (uint8);
+    function BURN_ADDRESS() external view returns (address);
+    function BURN_RATIO_SCALE() external view returns (uint256);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function DUSTY_INCOMING() external view returns (uint256);
+    function EPOCH() external view returns (uint256);
+    function ERROR_FAIL_CHECK_VALIDATORS() external view returns (uint32);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function ERROR_LEN_OF_VAL_MISMATCH() external view returns (uint32);
+    function ERROR_RELAYFEE_TOO_LARGE() external view returns (uint32);
+    function ERROR_UNKNOWN_PACKAGE_TYPE() external view returns (uint32);
+    function EXPIRE_TIME_SECOND_GAP() external view returns (uint256);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function INIT_BURN_RATIO() external view returns (uint256);
+    function INIT_FINALITY_REWARD_RATIO() external view returns (uint256);
+    function INIT_MAINTAIN_SLASH_SCALE() external view returns (uint256);
+    function INIT_MAX_NUM_OF_MAINTAINING() external view returns (uint256);
+    function INIT_NUM_OF_CABINETS() external view returns (uint256);
+    function INIT_VALIDATORSET_BYTES() external view returns (bytes memory);
+    function JAIL_MESSAGE_TYPE() external view returns (uint8);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function MAX_NUM_OF_VALIDATORS() external view returns (uint256);
+    function PRECISION() external view returns (uint256);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATORS_UPDATE_MESSAGE_TYPE() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function bscChainID() external view returns (uint16);
+    function burnRatio() external view returns (uint256);
+    function burnRatioInitialized() external view returns (bool);
+    function canEnterMaintenance(uint256 index) external view returns (bool);
+    function currentValidatorSet(uint256)
+        external
+        view
+        returns (
+            address consensusAddress,
+            address feeAddress,
+            address BBCFeeAddress,
+            uint64 votingPower,
+            bool jailed,
+            uint256 incoming
+        );
+    function currentValidatorSetMap(address) external view returns (uint256);
+    function deposit(address valAddr) external payable;
+    function distributeFinalityReward(address[] memory valAddrs, uint256[] memory weights) external;
+    function enterMaintenance() external;
+    function exitMaintenance() external;
+    function expireTimeSecondGap() external view returns (uint256);
+    function felony(address validator) external;
+    function finalityRewardRatio() external view returns (uint256);
+    function getCurrentValidatorIndex(address _validator) external view returns (uint256);
+    function getIncoming(address validator) external view returns (uint256);
+    function getLivingValidators() external view returns (address[] memory, bytes[] memory);
+    function getMiningValidators() external view returns (address[] memory, bytes[] memory);
+    function getValidators() external view returns (address[] memory);
+    function getWorkingValidatorCount() external view returns (uint256 workingValidatorCount);
+    function handleAckPackage(uint8 channelId, bytes memory msgBytes) external;
+    function handleFailAckPackage(uint8 channelId, bytes memory msgBytes) external;
+    function handleSynPackage(uint8, bytes memory msgBytes) external returns (bytes memory responsePayload);
+    function init() external;
+    function isCurrentValidator(address validator) external view returns (bool);
+    function isWorkingValidator(uint256 index) external view returns (bool);
+    function maintainSlashScale() external view returns (uint256);
+    function maxNumOfCandidates() external view returns (uint256);
+    function maxNumOfMaintaining() external view returns (uint256);
+    function maxNumOfWorkingCandidates() external view returns (uint256);
+    function misdemeanor(address validator) external;
+    function numOfCabinets() external view returns (uint256);
+    function numOfJailed() external view returns (uint256);
+    function numOfMaintaining() external view returns (uint256);
+    function previousHeight() external view returns (uint256);
+    function totalInComing() external view returns (uint256);
+    function updateParam(string memory key, bytes memory value) external;
+    function validatorExtraSet(uint256)
+        external
+        view
+        returns (uint256 enterMaintenanceHeight, bool isMaintaining, bytes memory voteAddress);
+}
diff --git a/lib/interface/IBSCValidatorSetTool.sol b/lib/interface/IBSCValidatorSetTool.sol
new file mode 100644
index 00000000..3e7a6ae8
--- /dev/null
+++ b/lib/interface/IBSCValidatorSetTool.sol
@@ -0,0 +1,7 @@
+pragma solidity ^0.8.10;
+
+interface BSCValidatorSetTool {
+    function INIT_VALIDATORSET_BYTES() external view returns (bytes memory);
+    function decodePayloadHeader(bytes memory payload) external pure returns (bool, uint8, uint256, bytes memory);
+    function init() external pure;
+}
diff --git a/lib/interface/ICrossChain.sol b/lib/interface/ICrossChain.sol
new file mode 100644
index 00000000..89c156c0
--- /dev/null
+++ b/lib/interface/ICrossChain.sol
@@ -0,0 +1,71 @@
+pragma solidity ^0.8.10;
+
+interface CrossChain {
+    event addChannel(uint8 indexed channelId, address indexed contractAddr);
+    event crossChainPackage(
+        uint16 chainId,
+        uint64 indexed oracleSequence,
+        uint64 indexed packageSequence,
+        uint8 indexed channelId,
+        bytes payload
+    );
+    event enableOrDisableChannel(uint8 indexed channelId, bool isEnable);
+    event paramChange(string key, bytes value);
+    event receivedPackage(uint8 packageType, uint64 indexed packageSequence, uint8 indexed channelId);
+    event unexpectedFailureAssertionInPackageHandler(address indexed contractAddr, bytes lowLevelData);
+    event unexpectedRevertInPackageHandler(address indexed contractAddr, string reason);
+    event unsupportedPackage(uint64 indexed packageSequence, uint8 indexed channelId, bytes payload);
+
+    function ACK_PACKAGE() external view returns (uint8);
+    function BIND_CHANNELID() external view returns (uint8);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_CHAIN_KEY_PREFIX() external view returns (uint256);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function FAIL_ACK_PACKAGE() external view returns (uint8);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function INIT_BATCH_SIZE() external view returns (uint256);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function STORE_NAME() external view returns (string memory);
+    function SYN_PACKAGE() external view returns (uint8);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function batchSizeForOracle() external view returns (uint256);
+    function bscChainID() external view returns (uint16);
+    function channelHandlerContractMap(uint8) external view returns (address);
+    function channelReceiveSequenceMap(uint8) external view returns (uint64);
+    function channelSendSequenceMap(uint8) external view returns (uint64);
+    function channelSyncedHeaderMap(uint8) external view returns (uint64);
+    function encodePayload(uint8 packageType, uint256 relayFee, bytes memory msgBytes)
+        external
+        pure
+        returns (bytes memory);
+    function handlePackage(
+        bytes memory payload,
+        bytes memory proof,
+        uint64 height,
+        uint64 packageSequence,
+        uint8 channelId
+    ) external;
+    function init() external;
+    function isRelayRewardFromSystemReward(uint8) external view returns (bool);
+    function oracleSequence() external view returns (int64);
+    function previousTxHeight() external view returns (uint256);
+    function registeredContractChannelMap(address, uint8) external view returns (bool);
+    function sendSynPackage(uint8 channelId, bytes memory msgBytes, uint256 relayFee) external;
+    function txCounter() external view returns (uint256);
+    function updateParam(string memory key, bytes memory value) external;
+}
diff --git a/lib/interface/IDEFToken.sol b/lib/interface/IDEFToken.sol
new file mode 100644
index 00000000..551707d8
--- /dev/null
+++ b/lib/interface/IDEFToken.sol
@@ -0,0 +1,26 @@
+pragma solidity ^0.8.10;
+
+interface DEFToken {
+    event Approval(address indexed owner, address indexed spender, uint256 value);
+    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+    function _decimals() external view returns (uint8);
+    function _name() external view returns (string memory);
+    function _symbol() external view returns (string memory);
+    function allowance(address owner, address spender) external view returns (uint256);
+    function approve(address spender, uint256 amount) external returns (bool);
+    function balanceOf(address account) external view returns (uint256);
+    function decimals() external view returns (uint8);
+    function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
+    function getOwner() external view returns (address);
+    function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
+    function name() external view returns (string memory);
+    function owner() external view returns (address);
+    function renounceOwnership() external;
+    function symbol() external view returns (string memory);
+    function totalSupply() external view returns (uint256);
+    function transfer(address recipient, uint256 amount) external returns (bool);
+    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
+    function transferOwnership(address newOwner) external;
+}
diff --git a/lib/interface/IGovHub.sol b/lib/interface/IGovHub.sol
new file mode 100644
index 00000000..17ba4548
--- /dev/null
+++ b/lib/interface/IGovHub.sol
@@ -0,0 +1,36 @@
+pragma solidity ^0.8.10;
+
+interface GovHub {
+    event failReasonWithBytes(bytes message);
+    event failReasonWithStr(string message);
+    event paramChange(string key, bytes value);
+
+    function BIND_CHANNELID() external view returns (uint8);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function ERROR_TARGET_CONTRACT_FAIL() external view returns (uint32);
+    function ERROR_TARGET_NOT_CONTRACT() external view returns (uint32);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function PARAM_UPDATE_MESSAGE_TYPE() external view returns (uint8);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function bscChainID() external view returns (uint16);
+    function handleAckPackage(uint8, bytes memory) external;
+    function handleFailAckPackage(uint8, bytes memory) external;
+    function handleSynPackage(uint8, bytes memory msgBytes) external returns (bytes memory responsePayload);
+}
diff --git a/lib/interface/IMaliciousToken.sol b/lib/interface/IMaliciousToken.sol
new file mode 100644
index 00000000..f3ae3d70
--- /dev/null
+++ b/lib/interface/IMaliciousToken.sol
@@ -0,0 +1,26 @@
+pragma solidity ^0.8.10;
+
+interface MaliciousToken {
+    event Approval(address indexed owner, address indexed spender, uint256 value);
+    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+    function _decimals() external view returns (uint8);
+    function _name() external view returns (string memory);
+    function _symbol() external view returns (string memory);
+    function allowance(address owner, address spender) external view returns (uint256);
+    function approve(address spender, uint256 amount) external returns (bool);
+    function balanceOf(address account) external view returns (uint256);
+    function decimals() external view returns (uint8);
+    function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
+    function getOwner() external view returns (address);
+    function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
+    function name() external view returns (string memory);
+    function owner() external view returns (address);
+    function renounceOwnership() external;
+    function symbol() external view returns (string memory);
+    function totalSupply() external view returns (uint256);
+    function transfer(address, uint256) external returns (bool);
+    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
+    function transferOwnership(address newOwner) external;
+}
diff --git a/lib/interface/IMiniToken.sol b/lib/interface/IMiniToken.sol
new file mode 100644
index 00000000..5ef899bb
--- /dev/null
+++ b/lib/interface/IMiniToken.sol
@@ -0,0 +1,26 @@
+pragma solidity ^0.8.10;
+
+interface MiniToken {
+    event Approval(address indexed owner, address indexed spender, uint256 value);
+    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+    function _decimals() external view returns (uint8);
+    function _name() external view returns (string memory);
+    function _symbol() external view returns (string memory);
+    function allowance(address owner, address spender) external view returns (uint256);
+    function approve(address spender, uint256 amount) external returns (bool);
+    function balanceOf(address account) external view returns (uint256);
+    function decimals() external view returns (uint8);
+    function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
+    function getOwner() external view returns (address);
+    function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
+    function name() external view returns (string memory);
+    function owner() external view returns (address);
+    function renounceOwnership() external;
+    function symbol() external view returns (string memory);
+    function totalSupply() external view returns (uint256);
+    function transfer(address recipient, uint256 amount) external returns (bool);
+    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
+    function transferOwnership(address newOwner) external;
+}
diff --git a/lib/interface/IRelayerHub.sol b/lib/interface/IRelayerHub.sol
new file mode 100644
index 00000000..105a5d80
--- /dev/null
+++ b/lib/interface/IRelayerHub.sol
@@ -0,0 +1,39 @@
+pragma solidity ^0.8.10;
+
+interface RelayerHub {
+    event paramChange(string key, bytes value);
+    event relayerRegister(address _relayer);
+    event relayerUnRegister(address _relayer);
+
+    function BIND_CHANNELID() external view returns (uint8);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function INIT_DUES() external view returns (uint256);
+    function INIT_REQUIRED_DEPOSIT() external view returns (uint256);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function bscChainID() external view returns (uint16);
+    function dues() external view returns (uint256);
+    function init() external;
+    function isRelayer(address sender) external view returns (bool);
+    function register() external payable;
+    function requiredDeposit() external view returns (uint256);
+    function unregister() external;
+    function updateParam(string memory key, bytes memory value) external;
+}
diff --git a/lib/interface/IRelayerIncentivize.sol b/lib/interface/IRelayerIncentivize.sol
new file mode 100644
index 00000000..1820b73c
--- /dev/null
+++ b/lib/interface/IRelayerIncentivize.sol
@@ -0,0 +1,60 @@
+pragma solidity ^0.8.10;
+
+interface RelayerIncentivize {
+    event distributeCollectedReward(
+        uint256 sequence, uint256 roundRewardForHeaderRelayer, uint256 roundRewardForTransferRelayer
+    );
+    event paramChange(string key, bytes value);
+    event rewardToRelayer(address relayer, uint256 amount);
+
+    function BIND_CHANNELID() external view returns (uint8);
+    function CALLER_COMPENSATION_DENOMINATOR() external view returns (uint256);
+    function CALLER_COMPENSATION_MOLECULE() external view returns (uint256);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function HEADER_RELAYER_REWARD_RATE_DENOMINATOR() external view returns (uint256);
+    function HEADER_RELAYER_REWARD_RATE_MOLECULE() external view returns (uint256);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function MAXIMUM_WEIGHT() external view returns (uint256);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function ROUND_SIZE() external view returns (uint256);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function addReward(address headerRelayerAddr, address packageRelayer, uint256 amount, bool fromSystemReward)
+        external
+        returns (bool);
+    function alreadyInit() external view returns (bool);
+    function bscChainID() external view returns (uint16);
+    function calculateHeaderRelayerWeight(uint256 count) external pure returns (uint256);
+    function calculateTransferRelayerWeight(uint256 count) external pure returns (uint256);
+    function callerCompensationDenominator() external view returns (uint256);
+    function callerCompensationMolecule() external view returns (uint256);
+    function claimRelayerReward(address relayerAddr) external;
+    function collectedRewardForHeaderRelayer() external view returns (uint256);
+    function collectedRewardForTransferRelayer() external view returns (uint256);
+    function countInRound() external view returns (uint256);
+    function dynamicExtraIncentiveAmount() external view returns (uint256);
+    function headerRelayerAddressRecord(uint256) external view returns (address);
+    function headerRelayerRewardRateDenominator() external view returns (uint256);
+    function headerRelayerRewardRateMolecule() external view returns (uint256);
+    function headerRelayersSubmitCount(address) external view returns (uint256);
+    function init() external;
+    function packageRelayerAddressRecord(uint256) external view returns (address);
+    function packageRelayersSubmitCount(address) external view returns (uint256);
+    function relayerRewardVault(address) external view returns (uint256);
+    function roundSequence() external view returns (uint256);
+    function updateParam(string memory key, bytes memory value) external;
+}
diff --git a/lib/interface/ISlashIndicator.sol b/lib/interface/ISlashIndicator.sol
new file mode 100644
index 00000000..1c0edb1f
--- /dev/null
+++ b/lib/interface/ISlashIndicator.sol
@@ -0,0 +1,69 @@
+pragma solidity ^0.8.10;
+
+interface SlashIndicator {
+    event crashResponse();
+    event indicatorCleaned();
+    event knownResponse(uint32 code);
+    event paramChange(string key, bytes value);
+    event unKnownResponse(uint32 code);
+    event validatorSlashed(address indexed validator);
+
+    struct FinalityEvidence {
+        VoteData voteA;
+        VoteData voteB;
+        bytes voteAddr;
+    }
+
+    struct VoteData {
+        uint256 srcNum;
+        bytes32 srcHash;
+        uint256 tarNum;
+        bytes32 tarHash;
+        bytes sig;
+    }
+
+    function BIND_CHANNELID() external view returns (uint8);
+    function BSC_RELAYER_REWARD() external view returns (uint256);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function DECREASE_RATE() external view returns (uint256);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function FELONY_THRESHOLD() external view returns (uint256);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function INIT_FINALITY_SLASH_REWARD_RATIO() external view returns (uint256);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function MISDEMEANOR_THRESHOLD() external view returns (uint256);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function bscChainID() external view returns (uint16);
+    function clean() external;
+    function felonyThreshold() external view returns (uint256);
+    function finalitySlashRewardRatio() external view returns (uint256);
+    function getSlashIndicator(address validator) external view returns (uint256, uint256);
+    function getSlashThresholds() external view returns (uint256, uint256);
+    function handleAckPackage(uint8, bytes memory msgBytes) external;
+    function handleFailAckPackage(uint8, bytes memory) external;
+    function handleSynPackage(uint8, bytes memory) external returns (bytes memory);
+    function indicators(address) external view returns (uint256 height, uint256 count, bool exist);
+    function init() external;
+    function misdemeanorThreshold() external view returns (uint256);
+    function previousHeight() external view returns (uint256);
+    function sendFelonyPackage(address validator) external;
+    function slash(address validator) external;
+    function submitFinalityViolationEvidence(FinalityEvidence memory _evidence) external;
+    function updateParam(string memory key, bytes memory value) external;
+    function validators(uint256) external view returns (address);
+}
diff --git a/lib/interface/IStaking.sol b/lib/interface/IStaking.sol
new file mode 100644
index 00000000..8ba8e946
--- /dev/null
+++ b/lib/interface/IStaking.sol
@@ -0,0 +1,90 @@
+pragma solidity ^0.8.10;
+
+interface Staking {
+    event crashResponse(uint8 indexed eventType);
+    event delegateFailed(address indexed delegator, address indexed validator, uint256 amount, uint8 errCode);
+    event delegateSubmitted(address indexed delegator, address indexed validator, uint256 amount, uint256 relayerFee);
+    event delegateSuccess(address indexed delegator, address indexed validator, uint256 amount);
+    event failedSynPackage(uint8 indexed eventType, uint256 errCode);
+    event paramChange(string key, bytes value);
+    event redelegateFailed(
+        address indexed delegator, address indexed valSrc, address indexed valDst, uint256 amount, uint8 errCode
+    );
+    event redelegateSubmitted(
+        address indexed delegator,
+        address indexed validatorSrc,
+        address indexed validatorDst,
+        uint256 amount,
+        uint256 relayerFee
+    );
+    event redelegateSuccess(address indexed delegator, address indexed valSrc, address indexed valDst, uint256 amount);
+    event rewardClaimed(address indexed delegator, uint256 amount);
+    event rewardReceived(address indexed delegator, uint256 amount);
+    event undelegateFailed(address indexed delegator, address indexed validator, uint256 amount, uint8 errCode);
+    event undelegateSubmitted(address indexed delegator, address indexed validator, uint256 amount, uint256 relayerFee);
+    event undelegateSuccess(address indexed delegator, address indexed validator, uint256 amount);
+    event undelegatedClaimed(address indexed delegator, uint256 amount);
+    event undelegatedReceived(address indexed delegator, address indexed validator, uint256 amount);
+
+    function BIND_CHANNELID() external view returns (uint8);
+    function CODE_FAILED() external view returns (uint8);
+    function CODE_OK() external view returns (uint32);
+    function CODE_SUCCESS() external view returns (uint8);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function ERROR_WITHDRAW_BNB() external view returns (uint32);
+    function EVENT_DELEGATE() external view returns (uint8);
+    function EVENT_DISTRIBUTE_REWARD() external view returns (uint8);
+    function EVENT_DISTRIBUTE_UNDELEGATED() external view returns (uint8);
+    function EVENT_REDELEGATE() external view returns (uint8);
+    function EVENT_UNDELEGATE() external view returns (uint8);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function INIT_BSC_RELAYER_FEE() external view returns (uint256);
+    function INIT_MIN_DELEGATION() external view returns (uint256);
+    function INIT_RELAYER_FEE() external view returns (uint256);
+    function INIT_TRANSFER_GAS() external view returns (uint256);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function LOCK_TIME() external view returns (uint256);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TEN_DECIMALS() external view returns (uint256);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function bSCRelayerFee() external view returns (uint256);
+    function bscChainID() external view returns (uint16);
+    function claimReward() external returns (uint256 amount);
+    function claimUndelegated() external returns (uint256 amount);
+    function delegate(address validator, uint256 amount) external payable;
+    function getDelegated(address delegator, address validator) external view returns (uint256);
+    function getDistributedReward(address delegator) external view returns (uint256);
+    function getMinDelegation() external view returns (uint256);
+    function getPendingRedelegateTime(address delegator, address valSrc, address valDst)
+        external
+        view
+        returns (uint256);
+    function getPendingUndelegateTime(address delegator, address validator) external view returns (uint256);
+    function getRelayerFee() external view returns (uint256);
+    function getRequestInFly(address delegator) external view returns (uint256[3] memory);
+    function getTotalDelegated(address delegator) external view returns (uint256);
+    function getUndelegated(address delegator) external view returns (uint256);
+    function handleAckPackage(uint8, bytes memory msgBytes) external;
+    function handleFailAckPackage(uint8, bytes memory msgBytes) external;
+    function handleSynPackage(uint8, bytes memory msgBytes) external returns (bytes memory);
+    function minDelegation() external view returns (uint256);
+    function redelegate(address validatorSrc, address validatorDst, uint256 amount) external payable;
+    function relayerFee() external view returns (uint256);
+    function transferGas() external view returns (uint256);
+    function undelegate(address validator, uint256 amount) external payable;
+    function updateParam(string memory key, bytes memory value) external;
+}
diff --git a/lib/interface/ISystem.sol b/lib/interface/ISystem.sol
new file mode 100644
index 00000000..7678e7f0
--- /dev/null
+++ b/lib/interface/ISystem.sol
@@ -0,0 +1,26 @@
+pragma solidity ^0.8.10;
+
+interface System {
+    function BIND_CHANNELID() external view returns (uint8);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function bscChainID() external view returns (uint16);
+}
diff --git a/lib/interface/ISystemReward.sol b/lib/interface/ISystemReward.sol
new file mode 100644
index 00000000..b9884fa4
--- /dev/null
+++ b/lib/interface/ISystemReward.sol
@@ -0,0 +1,37 @@
+pragma solidity ^0.8.10;
+
+interface SystemReward {
+    event paramChange(string key, bytes value);
+    event receiveDeposit(address indexed from, uint256 amount);
+    event rewardEmpty();
+    event rewardTo(address indexed to, uint256 amount);
+    event updateOperator(address indexed operator);
+
+    function BIND_CHANNELID() external view returns (uint8);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function MAX_REWARDS() external view returns (uint256);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function bscChainID() external view returns (uint16);
+    function claimRewards(address to, uint256 amount) external returns (uint256);
+    function isOperator(address addr) external view returns (bool);
+    function numOperator() external view returns (uint256);
+    function updateParam(string memory key, bytes memory value) external;
+}
diff --git a/lib/interface/ITendermintLightClient.sol b/lib/interface/ITendermintLightClient.sol
new file mode 100644
index 00000000..aea110fa
--- /dev/null
+++ b/lib/interface/ITendermintLightClient.sol
@@ -0,0 +1,53 @@
+pragma solidity ^0.8.10;
+
+interface TendermintLightClient {
+    event initConsensusState(uint64 initHeight, bytes32 appHash);
+    event paramChange(string key, bytes value);
+    event syncConsensusState(uint64 height, uint64 preValidatorSetChangeHeight, bytes32 appHash, bool validatorChanged);
+
+    function BIND_CHANNELID() external view returns (uint8);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function INIT_CONSENSUS_STATE_BYTES() external view returns (bytes memory);
+    function INIT_REWARD_FOR_VALIDATOR_SER_CHANGE() external view returns (uint256);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function bscChainID() external view returns (uint16);
+    function chainID() external view returns (bytes32);
+    function getAppHash(uint64 height) external view returns (bytes32);
+    function getChainID() external view returns (string memory);
+    function getSubmitter(uint64 height) external view returns (address);
+    function init() external;
+    function initialHeight() external view returns (uint64);
+    function isHeaderSynced(uint64 height) external view returns (bool);
+    function latestHeight() external view returns (uint64);
+    function lightClientConsensusStates(uint64)
+        external
+        view
+        returns (
+            uint64 preValidatorSetChangeHeight,
+            bytes32 appHash,
+            bytes32 curValidatorSetHash,
+            bytes memory nextValidatorSet
+        );
+    function rewardForValidatorSetChange() external view returns (uint256);
+    function submitters(uint64) external view returns (address);
+    function syncTendermintHeader(bytes memory header, uint64 height) external returns (bool);
+    function updateParam(string memory key, bytes memory value) external;
+}
diff --git a/lib/interface/ITokenHub.sol b/lib/interface/ITokenHub.sol
new file mode 100644
index 00000000..9b3f0374
--- /dev/null
+++ b/lib/interface/ITokenHub.sol
@@ -0,0 +1,77 @@
+pragma solidity ^0.8.10;
+
+interface TokenHub {
+    event paramChange(string key, bytes value);
+    event receiveDeposit(address from, uint256 amount);
+    event refundFailure(address bep20Addr, address refundAddr, uint256 amount, uint32 status);
+    event refundSuccess(address bep20Addr, address refundAddr, uint256 amount, uint32 status);
+    event rewardTo(address to, uint256 amount);
+    event transferInSuccess(address bep20Addr, address refundAddr, uint256 amount);
+    event transferOutSuccess(address bep20Addr, address senderAddr, uint256 amount, uint256 relayFee);
+    event unexpectedPackage(uint8 channelId, bytes msgBytes);
+
+    function BEP2_TOKEN_DECIMALS() external view returns (uint8);
+    function BEP2_TOKEN_SYMBOL_FOR_BNB() external view returns (bytes32);
+    function BIND_CHANNELID() external view returns (uint8);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function INIT_MINIMUM_RELAY_FEE() external view returns (uint256);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function MAXIMUM_BEP20_SYMBOL_LEN() external view returns (uint8);
+    function MAX_BEP2_TOTAL_SUPPLY() external view returns (uint256);
+    function MAX_GAS_FOR_CALLING_BEP20() external view returns (uint256);
+    function MAX_GAS_FOR_TRANSFER_BNB() external view returns (uint256);
+    function MINIMUM_BEP20_SYMBOL_LEN() external view returns (uint8);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function REWARD_UPPER_LIMIT() external view returns (uint256);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TEN_DECIMALS() external view returns (uint256);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_IN_FAILURE_INSUFFICIENT_BALANCE() external view returns (uint8);
+    function TRANSFER_IN_FAILURE_NON_PAYABLE_RECIPIENT() external view returns (uint8);
+    function TRANSFER_IN_FAILURE_TIMEOUT() external view returns (uint8);
+    function TRANSFER_IN_FAILURE_UNBOUND_TOKEN() external view returns (uint8);
+    function TRANSFER_IN_FAILURE_UNKNOWN() external view returns (uint8);
+    function TRANSFER_IN_SUCCESS() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function batchTransferOutBNB(
+        address[] memory recipientAddrs,
+        uint256[] memory amounts,
+        address[] memory refundAddrs,
+        uint64 expireTime
+    ) external payable returns (bool);
+    function bep20ContractDecimals(address) external view returns (uint256);
+    function bindToken(bytes32 bep2Symbol, address contractAddr, uint256 decimals) external;
+    function bscChainID() external view returns (uint16);
+    function claimRewards(address to, uint256 amount) external returns (uint256);
+    function getBep2SymbolByContractAddr(address contractAddr) external view returns (bytes32);
+    function getBoundBep2Symbol(address contractAddr) external view returns (string memory);
+    function getBoundContract(string memory bep2Symbol) external view returns (address);
+    function getContractAddrByBEP2Symbol(bytes32 bep2Symbol) external view returns (address);
+    function getMiniRelayFee() external view returns (uint256);
+    function handleAckPackage(uint8 channelId, bytes memory msgBytes) external;
+    function handleFailAckPackage(uint8 channelId, bytes memory msgBytes) external;
+    function handleSynPackage(uint8 channelId, bytes memory msgBytes) external returns (bytes memory);
+    function init() external;
+    function relayFee() external view returns (uint256);
+    function transferOut(address contractAddr, address recipient, uint256 amount, uint64 expireTime)
+        external
+        payable
+        returns (bool);
+    function unbindToken(bytes32 bep2Symbol, address contractAddr) external;
+    function updateParam(string memory key, bytes memory value) external;
+    function withdrawStakingBNB(uint256 amount) external returns (bool);
+}
diff --git a/lib/interface/ITokenManager.sol b/lib/interface/ITokenManager.sol
new file mode 100644
index 00000000..31a0273d
--- /dev/null
+++ b/lib/interface/ITokenManager.sol
@@ -0,0 +1,84 @@
+pragma solidity ^0.8.10;
+
+interface TokenManager {
+    event bindFailure(address indexed contractAddr, string bep2Symbol, uint32 failedReason);
+    event bindSuccess(address indexed contractAddr, string bep2Symbol, uint256 totalSupply, uint256 peggyAmount);
+    event mirrorFailure(address indexed bep20Addr, uint8 errCode);
+    event mirrorSuccess(address indexed bep20Addr, bytes32 bep2Symbol);
+    event paramChange(string key, bytes value);
+    event syncFailure(address indexed bep20Addr, uint8 errCode);
+    event syncSuccess(address indexed bep20Addr);
+    event unexpectedPackage(uint8 channelId, bytes msgBytes);
+
+    function BEP2_TOKEN_DECIMALS() external view returns (uint8);
+    function BIND_CHANNELID() external view returns (uint8);
+    function BIND_PACKAGE() external view returns (uint8);
+    function BIND_STATUS_ALREADY_BOUND_TOKEN() external view returns (uint8);
+    function BIND_STATUS_DECIMALS_MISMATCH() external view returns (uint8);
+    function BIND_STATUS_REJECTED() external view returns (uint8);
+    function BIND_STATUS_SYMBOL_MISMATCH() external view returns (uint8);
+    function BIND_STATUS_TIMEOUT() external view returns (uint8);
+    function BIND_STATUS_TOO_MUCH_TOKENHUB_BALANCE() external view returns (uint8);
+    function BIND_STATUS_TOTAL_SUPPLY_MISMATCH() external view returns (uint8);
+    function CODE_OK() external view returns (uint32);
+    function CROSS_CHAIN_CONTRACT_ADDR() external view returns (address);
+    function CROSS_STAKE_CHANNELID() external view returns (uint8);
+    function ERROR_FAIL_DECODE() external view returns (uint32);
+    function GOV_CHANNELID() external view returns (uint8);
+    function GOV_HUB_ADDR() external view returns (address);
+    function INCENTIVIZE_ADDR() external view returns (address);
+    function LIGHT_CLIENT_ADDR() external view returns (address);
+    function LOG_MAX_UINT256() external view returns (uint256);
+    function MAXIMUM_BEP20_SYMBOL_LEN() external view returns (uint8);
+    function MAX_BEP2_TOTAL_SUPPLY() external view returns (uint256);
+    function MAX_GAS_FOR_TRANSFER_BNB() external view returns (uint256);
+    function MINIMUM_BEP20_SYMBOL_LEN() external view returns (uint8);
+    function MIRROR_CHANNELID() external view returns (uint8);
+    function MIRROR_STATUS_ALREADY_BOUND() external view returns (uint8);
+    function MIRROR_STATUS_DUPLICATED_BEP2_SYMBOL() external view returns (uint8);
+    function MIRROR_STATUS_TIMEOUT() external view returns (uint8);
+    function RELAYERHUB_CONTRACT_ADDR() external view returns (address);
+    function SLASH_CHANNELID() external view returns (uint8);
+    function SLASH_CONTRACT_ADDR() external view returns (address);
+    function STAKING_CHANNELID() external view returns (uint8);
+    function STAKING_CONTRACT_ADDR() external view returns (address);
+    function SYNC_CHANNELID() external view returns (uint8);
+    function SYNC_STATUS_NOT_BOUND_MIRROR() external view returns (uint8);
+    function SYNC_STATUS_TIMEOUT() external view returns (uint8);
+    function SYSTEM_REWARD_ADDR() external view returns (address);
+    function TEN_DECIMALS() external view returns (uint256);
+    function TOKEN_HUB_ADDR() external view returns (address);
+    function TOKEN_MANAGER_ADDR() external view returns (address);
+    function TRANSFER_IN_CHANNELID() external view returns (uint8);
+    function TRANSFER_OUT_CHANNELID() external view returns (uint8);
+    function UNBIND_PACKAGE() external view returns (uint8);
+    function VALIDATOR_CONTRACT_ADDR() external view returns (address);
+    function alreadyInit() external view returns (bool);
+    function approveBind(address contractAddr, string memory bep2Symbol) external payable returns (bool);
+    function bindPackageRecord(bytes32)
+        external
+        view
+        returns (
+            uint8 packageType,
+            bytes32 bep2TokenSymbol,
+            address contractAddr,
+            uint256 totalSupply,
+            uint256 peggyAmount,
+            uint8 bep20Decimals,
+            uint64 expireTime
+        );
+    function boundByMirror(address) external view returns (bool);
+    function bscChainID() external view returns (uint16);
+    function expireBind(string memory bep2Symbol) external payable returns (bool);
+    function handleAckPackage(uint8 channelId, bytes memory msgBytes) external;
+    function handleFailAckPackage(uint8 channelId, bytes memory msgBytes) external;
+    function handleSynPackage(uint8 channelId, bytes memory msgBytes) external returns (bytes memory);
+    function mirror(address bep20Addr, uint64 expireTime) external payable returns (bool);
+    function mirrorFee() external view returns (uint256);
+    function mirrorPendingRecord(address) external view returns (bool);
+    function queryRequiredLockAmountForBind(string memory symbol) external view returns (uint256);
+    function rejectBind(address contractAddr, string memory bep2Symbol) external payable returns (bool);
+    function sync(address bep20Addr, uint64 expireTime) external payable returns (bool);
+    function syncFee() external view returns (uint256);
+    function updateParam(string memory key, bytes memory value) external;
+}
diff --git a/lib/interface/IXYZToken.sol b/lib/interface/IXYZToken.sol
new file mode 100644
index 00000000..b12a7d46
--- /dev/null
+++ b/lib/interface/IXYZToken.sol
@@ -0,0 +1,28 @@
+pragma solidity ^0.8.10;
+
+interface XYZToken {
+    event Approval(address indexed owner, address indexed spender, uint256 value);
+    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+    function allowance(address owner, address spender) external view returns (uint256);
+    function approve(address spender, uint256 amount) external returns (bool);
+    function balanceOf(address account) external view returns (uint256);
+    function decimals() external view returns (uint8);
+    function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
+    function getOwner() external view returns (address);
+    function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
+    function mint(uint256 amount) external returns (bool);
+    function name() external view returns (string memory);
+    function owner() external view returns (address);
+    function renounceOwnership() external;
+    function setDecimals(uint8 newDecimals) external;
+    function setName(string memory newName) external;
+    function setSymbol(string memory newSymbol) external;
+    function setTotalSupply(uint256 newTotalSupply) external;
+    function symbol() external view returns (string memory);
+    function totalSupply() external view returns (uint256);
+    function transfer(address recipient, uint256 amount) external returns (bool);
+    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
+    function transferOwnership(address newOwner) external;
+}
diff --git a/migrations/1_initial_migration.js b/migrations/1_initial_migration.js
deleted file mode 100644
index ee2135d2..00000000
--- a/migrations/1_initial_migration.js
+++ /dev/null
@@ -1,5 +0,0 @@
-const Migrations = artifacts.require("Migrations");
-
-module.exports = function(deployer) {
-  deployer.deploy(Migrations);
-};
diff --git a/migrations/2_deploy_contracts.js b/migrations/2_deploy_contracts.js
deleted file mode 100644
index bf32face..00000000
--- a/migrations/2_deploy_contracts.js
+++ /dev/null
@@ -1,149 +0,0 @@
-const SlashIndicator = artifacts.require("SlashIndicator");
-const SystemReward = artifacts.require("SystemReward");
-const TypesToBytes = artifacts.require("Seriality/TypesToBytes");
-const CmnPkg = artifacts.require("Seriality/CmnPkg");
-const RLPDecode = artifacts.require("rlp/RLPDecode");
-const RLPEncode = artifacts.require("rlp/RLPEncode");
-const BytesToTypes = artifacts.require("rlp/BytesToTypes");
-const Memory = artifacts.require("Seriality/Memory");
-const SafeMath = artifacts.require("lib/SafeMath");
-const BytesLib = artifacts.require("solidity-bytes-utils/contracts/BytesLib");
-
-const MockLightClient = artifacts.require("mock/MockLightClient");
-const MockTokenHub = artifacts.require("mock/MockTokenHub");
-const MockRelayerHub = artifacts.require("mock/MockRelayerHub");
-const BSCValidatorSet = artifacts.require("BSCValidatorSet");
-const RelayerHub = artifacts.require("RelayerHub");
-const GovHub = artifacts.require("GovHub");
-
-const RelayerIncentivize = artifacts.require("RelayerIncentivize");
-const TendermintLightClient = artifacts.require("TendermintLightClient");
-const CrossChain = artifacts.require("CrossChain");
-const TokenHub = artifacts.require("TokenHub");
-const TokenManager = artifacts.require("TokenManager");
-const ABCToken = artifacts.require("test/ABCToken");
-const DEFToken = artifacts.require("test/DEFToken");
-const XYZToken = artifacts.require("test/XYZToken");
-const MiniToken = artifacts.require("test/MiniToken");
-const MaliciousToken = artifacts.require("test/MaliciousToken");
-const BSCValidatorSetTool = artifacts.require("tool/BSCValidatorSetTool");
-
-const Web3 = require('web3');
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-
-
-module.exports = function(deployer, network, accounts) {
-  let relayerIncentivizeInstance;
-  deployer.deploy(RelayerIncentivize).then(function(_relayerIncentivizeInstance){
-    relayerIncentivizeInstance=_relayerIncentivizeInstance;
-    relayerIncentivizeInstance.init();
-  });
-  let tendermintLightClientInstance;
-  deployer.deploy(TendermintLightClient).then(function(_tendermintLightClientInstance){
-    tendermintLightClientInstance=_tendermintLightClientInstance;
-    tendermintLightClientInstance.init();
-  });
-  let crossChainInstance;
-  deployer.deploy(CrossChain).then(function (_crossChainInstance) {
-    crossChainInstance = _crossChainInstance;
-  });
-  deployer.deploy(ABCToken);
-  deployer.deploy(DEFToken);
-  deployer.deploy(XYZToken);
-  deployer.deploy(MiniToken);
-  deployer.deploy(MaliciousToken);
-  deployer.deploy(MockRelayerHub);
-  deployer.deploy(BSCValidatorSetTool);
-
-  // let operators = [accounts[0],accounts[1], accounts[2]];
-  deployer.deploy(SystemReward).then(function (instance) {
-    instance.addOperator(accounts[0], {from: accounts[0]});
-    instance.addOperator(accounts[1], {from: accounts[0]});
-    instance.addOperator(accounts[2], {from: accounts[0]});
-    instance.addOperator(TendermintLightClient.address, {from: accounts[0]});
-    instance.addOperator(RelayerIncentivize.address, {from: accounts[0]});
-  });
-
-  let tokenMgrInstance;
-  let tokenHubInstance;
-  let relayerHubInstance;
-  // deploy lib
-  deployer.deploy(TypesToBytes).then(function() {
-    return deployer.deploy(BytesToTypes);
-  }).then(function() {
-    return deployer.deploy(Memory);
-  }).then(function() {
-    return deployer.deploy(SafeMath);
-  }).then(function() {
-    return deployer.deploy(BytesLib);
-  }).then(function() {
-    return deployer.deploy(CmnPkg);
-  }).then(function() {
-    return deployer.deploy(RLPDecode);
-  }).then(function() {
-    return deployer.deploy(RLPEncode);
-  }).then(function() {
-    // deploy mock
-    return deployer.deploy(MockLightClient);
-  }).then(function() {
-    deployer.deploy(TokenHub).then(function(_tokenHubInstance){
-      deployer.link(RLPEncode, TokenHub);
-      deployer.link(RLPDecode, TokenHub);
-      deployer.link(SafeMath, TokenHub);
-      tokenHubInstance=_tokenHubInstance;
-      tokenHubInstance.init();
-      tokenHubInstance.sendTransaction({from:accounts[0],value:50e18});
-    });
-  }).then(function() {
-    deployer.deploy(TokenManager).then(function(_tokenMgrInstance){
-      deployer.link(RLPEncode, TokenManager);
-      deployer.link(RLPDecode, TokenManager);
-      deployer.link(SafeMath, TokenManager);
-      tokenMgrInstance=_tokenMgrInstance;
-    });
-  }).then(function() {
-    // deploy mock
-    deployer.link(Memory, RelayerHub);
-    return deployer.deploy(RelayerHub);
-  }).then(function(_relayerHubInstance) {
-    relayerHubInstance=_relayerHubInstance;
-    relayerHubInstance.init();
-    relayerHubInstance.register({from: accounts[8],value: 1e20});
-    // deploy mock
-    return deployer.deploy(MockTokenHub);
-  }).then(function() {
-    deployer.link(Memory, SlashIndicator);
-    return deployer.deploy(SlashIndicator);
-  }).then(function(slashInstance) {
-    slashInstance.init();
-    deployer.link(TypesToBytes, BSCValidatorSet);
-    deployer.link(BytesToTypes, BSCValidatorSet);
-    deployer.link(Memory, BSCValidatorSet);
-    deployer.link(BytesLib, BSCValidatorSet);
-    deployer.link(CmnPkg, BSCValidatorSet);
-    deployer.link(RLPDecode, BSCValidatorSet);
-
-    deployer.link(BytesToTypes, GovHub);
-    deployer.link(Memory, GovHub);
-    deployer.link(BytesLib, GovHub);
-
-    let govHubInstance;
-    deployer.deploy(GovHub).then(function(_govHubInstance){
-      govHubInstance=_govHubInstance;
-    });
-
-    return deployer.deploy(BSCValidatorSet).then(function (validatorInstance) {
-      validatorInstance.init();
-      relayerIncentivizeInstance.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address,TokenHub.address,RelayerIncentivize.address,RelayerHub.address,GovHub.address, TokenManager.address, CrossChain.address);
-      tendermintLightClientInstance.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address,TokenHub.address,RelayerIncentivize.address,RelayerHub.address,GovHub.address, TokenManager.address, CrossChain.address);
-      tokenHubInstance.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address,TokenHub.address,RelayerIncentivize.address,RelayerHub.address,GovHub.address, TokenManager.address, CrossChain.address);
-      tokenMgrInstance.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address,TokenHub.address,RelayerIncentivize.address,RelayerHub.address,GovHub.address, TokenManager.address, CrossChain.address);
-      govHubInstance.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address,TokenHub.address,RelayerIncentivize.address,RelayerHub.address,GovHub.address, TokenManager.address, accounts[8]);
-      slashInstance.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address,TokenHub.address,RelayerIncentivize.address,RelayerHub.address,GovHub.address, TokenManager.address, CrossChain.address);
-      validatorInstance.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address,MockTokenHub.address,RelayerIncentivize.address,RelayerHub.address,GovHub.address, TokenManager.address, accounts[8]);
-      relayerHubInstance.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address,TokenHub.address,RelayerIncentivize.address,RelayerHub.address,GovHub.address, TokenManager.address, CrossChain.address);
-      crossChainInstance.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address,TokenHub.address,RelayerIncentivize.address,RelayerHub.address,GovHub.address, TokenManager.address, CrossChain.address);
-      crossChainInstance.init();
-    });
-  });
-};
diff --git a/package-lock.json b/package-lock.json
deleted file mode 100644
index cd1d0dd8..00000000
--- a/package-lock.json
+++ /dev/null
@@ -1,7254 +0,0 @@
-{
-  "name": "genesis-contracts",
-  "version": "1.0.0",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "@ethersproject/abi": {
-      "version": "5.0.7",
-      "resolved": "https://registry.npmjs.org/@ethersproject/abi/-/abi-5.0.7.tgz",
-      "integrity": "sha512-Cqktk+hSIckwP/W8O47Eef60VwmoSC/L3lY0+dIBhQPCNn9E4V7rwmm2aFrNRRDJfFlGuZ1khkQUOc3oBX+niw==",
-      "requires": {
-        "@ethersproject/address": "^5.0.4",
-        "@ethersproject/bignumber": "^5.0.7",
-        "@ethersproject/bytes": "^5.0.4",
-        "@ethersproject/constants": "^5.0.4",
-        "@ethersproject/hash": "^5.0.4",
-        "@ethersproject/keccak256": "^5.0.3",
-        "@ethersproject/logger": "^5.0.5",
-        "@ethersproject/properties": "^5.0.3",
-        "@ethersproject/strings": "^5.0.4"
-      }
-    },
-    "@ethersproject/abstract-provider": {
-      "version": "5.0.8",
-      "resolved": "https://registry.npmjs.org/@ethersproject/abstract-provider/-/abstract-provider-5.0.8.tgz",
-      "integrity": "sha512-fqJXkewcGdi8LogKMgRyzc/Ls2js07yor7+g9KfPs09uPOcQLg7cc34JN+lk34HH9gg2HU0DIA5797ZR8znkfw==",
-      "requires": {
-        "@ethersproject/bignumber": "^5.0.13",
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/logger": "^5.0.8",
-        "@ethersproject/networks": "^5.0.7",
-        "@ethersproject/properties": "^5.0.7",
-        "@ethersproject/transactions": "^5.0.9",
-        "@ethersproject/web": "^5.0.12"
-      }
-    },
-    "@ethersproject/abstract-signer": {
-      "version": "5.0.11",
-      "resolved": "https://registry.npmjs.org/@ethersproject/abstract-signer/-/abstract-signer-5.0.11.tgz",
-      "integrity": "sha512-RKOgPSEYafknA62SrD3OCK42AllHE4YBfKYXyQeM+sBP7Nq3X5FpzeoY4uzC43P4wIhmNoTHCKQuwnX7fBqb6Q==",
-      "requires": {
-        "@ethersproject/abstract-provider": "^5.0.8",
-        "@ethersproject/bignumber": "^5.0.13",
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/logger": "^5.0.8",
-        "@ethersproject/properties": "^5.0.7"
-      }
-    },
-    "@ethersproject/address": {
-      "version": "5.0.9",
-      "resolved": "https://registry.npmjs.org/@ethersproject/address/-/address-5.0.9.tgz",
-      "integrity": "sha512-gKkmbZDMyGbVjr8nA5P0md1GgESqSGH7ILIrDidPdNXBl4adqbuA3OAuZx/O2oGpL6PtJ9BDa0kHheZ1ToHU3w==",
-      "requires": {
-        "@ethersproject/bignumber": "^5.0.13",
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/keccak256": "^5.0.7",
-        "@ethersproject/logger": "^5.0.8",
-        "@ethersproject/rlp": "^5.0.7"
-      }
-    },
-    "@ethersproject/base64": {
-      "version": "5.0.7",
-      "resolved": "https://registry.npmjs.org/@ethersproject/base64/-/base64-5.0.7.tgz",
-      "integrity": "sha512-S5oh5DVfCo06xwJXT8fQC68mvJfgScTl2AXvbYMsHNfIBTDb084Wx4iA9MNlEReOv6HulkS+gyrUM/j3514rSw==",
-      "requires": {
-        "@ethersproject/bytes": "^5.0.9"
-      }
-    },
-    "@ethersproject/bignumber": {
-      "version": "5.0.13",
-      "resolved": "https://registry.npmjs.org/@ethersproject/bignumber/-/bignumber-5.0.13.tgz",
-      "integrity": "sha512-b89bX5li6aK492yuPP5mPgRVgIxxBP7ksaBtKX5QQBsrZTpNOjf/MR4CjcUrAw8g+RQuD6kap9lPjFgY4U1/5A==",
-      "requires": {
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/logger": "^5.0.8",
-        "bn.js": "^4.4.0"
-      }
-    },
-    "@ethersproject/bytes": {
-      "version": "5.0.9",
-      "resolved": "https://registry.npmjs.org/@ethersproject/bytes/-/bytes-5.0.9.tgz",
-      "integrity": "sha512-k+17ZViDtAugC0s7HM6rdsTWEdIYII4RPCDkPEuxKc6i40Bs+m6tjRAtCECX06wKZnrEoR9pjOJRXHJ/VLoOcA==",
-      "requires": {
-        "@ethersproject/logger": "^5.0.8"
-      }
-    },
-    "@ethersproject/constants": {
-      "version": "5.0.8",
-      "resolved": "https://registry.npmjs.org/@ethersproject/constants/-/constants-5.0.8.tgz",
-      "integrity": "sha512-sCc73pFBsl59eDfoQR5OCEZCRv5b0iywadunti6MQIr5lt3XpwxK1Iuzd8XSFO02N9jUifvuZRrt0cY0+NBgTg==",
-      "requires": {
-        "@ethersproject/bignumber": "^5.0.13"
-      }
-    },
-    "@ethersproject/hash": {
-      "version": "5.0.10",
-      "resolved": "https://registry.npmjs.org/@ethersproject/hash/-/hash-5.0.10.tgz",
-      "integrity": "sha512-Tf0bvs6YFhw28LuHnhlDWyr0xfcDxSXdwM4TcskeBbmXVSKLv3bJQEEEBFUcRX0fJuslR3gCVySEaSh7vuMx5w==",
-      "requires": {
-        "@ethersproject/abstract-signer": "^5.0.10",
-        "@ethersproject/address": "^5.0.9",
-        "@ethersproject/bignumber": "^5.0.13",
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/keccak256": "^5.0.7",
-        "@ethersproject/logger": "^5.0.8",
-        "@ethersproject/properties": "^5.0.7",
-        "@ethersproject/strings": "^5.0.8"
-      }
-    },
-    "@ethersproject/keccak256": {
-      "version": "5.0.7",
-      "resolved": "https://registry.npmjs.org/@ethersproject/keccak256/-/keccak256-5.0.7.tgz",
-      "integrity": "sha512-zpUBmofWvx9PGfc7IICobgFQSgNmTOGTGLUxSYqZzY/T+b4y/2o5eqf/GGmD7qnTGzKQ42YlLNo+LeDP2qe55g==",
-      "requires": {
-        "@ethersproject/bytes": "^5.0.9",
-        "js-sha3": "0.5.7"
-      },
-      "dependencies": {
-        "js-sha3": {
-          "version": "0.5.7",
-          "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.5.7.tgz",
-          "integrity": "sha1-DU/9gALVMzqrr0oj7tL2N0yfKOc="
-        }
-      }
-    },
-    "@ethersproject/logger": {
-      "version": "5.0.8",
-      "resolved": "https://registry.npmjs.org/@ethersproject/logger/-/logger-5.0.8.tgz",
-      "integrity": "sha512-SkJCTaVTnaZ3/ieLF5pVftxGEFX56pTH+f2Slrpv7cU0TNpUZNib84QQdukd++sWUp/S7j5t5NW+WegbXd4U/A=="
-    },
-    "@ethersproject/networks": {
-      "version": "5.0.7",
-      "resolved": "https://registry.npmjs.org/@ethersproject/networks/-/networks-5.0.7.tgz",
-      "integrity": "sha512-dI14QATndIcUgcCBL1c5vUr/YsI5cCHLN81rF7PU+yS7Xgp2/Rzbr9+YqpC6NBXHFUASjh6GpKqsVMpufAL0BQ==",
-      "requires": {
-        "@ethersproject/logger": "^5.0.8"
-      }
-    },
-    "@ethersproject/properties": {
-      "version": "5.0.7",
-      "resolved": "https://registry.npmjs.org/@ethersproject/properties/-/properties-5.0.7.tgz",
-      "integrity": "sha512-812H1Rus2vjw0zbasfDI1GLNPDsoyX1pYqiCgaR1BuyKxUTbwcH1B+214l6VGe1v+F6iEVb7WjIwMjKhb4EUsg==",
-      "requires": {
-        "@ethersproject/logger": "^5.0.8"
-      }
-    },
-    "@ethersproject/rlp": {
-      "version": "5.0.7",
-      "resolved": "https://registry.npmjs.org/@ethersproject/rlp/-/rlp-5.0.7.tgz",
-      "integrity": "sha512-ulUTVEuV7PT4jJTPpfhRHK57tkLEDEY9XSYJtrSNHOqdwMvH0z7BM2AKIMq4LVDlnu4YZASdKrkFGEIO712V9w==",
-      "requires": {
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/logger": "^5.0.8"
-      }
-    },
-    "@ethersproject/signing-key": {
-      "version": "5.0.8",
-      "resolved": "https://registry.npmjs.org/@ethersproject/signing-key/-/signing-key-5.0.8.tgz",
-      "integrity": "sha512-YKxQM45eDa6WAD+s3QZPdm1uW1MutzVuyoepdRRVmMJ8qkk7iOiIhUkZwqKLNxKzEJijt/82ycuOREc9WBNAKg==",
-      "requires": {
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/logger": "^5.0.8",
-        "@ethersproject/properties": "^5.0.7",
-        "elliptic": "6.5.3"
-      }
-    },
-    "@ethersproject/strings": {
-      "version": "5.0.8",
-      "resolved": "https://registry.npmjs.org/@ethersproject/strings/-/strings-5.0.8.tgz",
-      "integrity": "sha512-5IsdXf8tMY8QuHl8vTLnk9ehXDDm6x9FB9S9Og5IA1GYhLe5ZewydXSjlJlsqU2t9HRbfv97OJZV/pX8DVA/Hw==",
-      "requires": {
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/constants": "^5.0.8",
-        "@ethersproject/logger": "^5.0.8"
-      }
-    },
-    "@ethersproject/transactions": {
-      "version": "5.0.9",
-      "resolved": "https://registry.npmjs.org/@ethersproject/transactions/-/transactions-5.0.9.tgz",
-      "integrity": "sha512-0Fu1yhdFBkrbMjenEr+39tmDxuHmaw0pe9Jb18XuKoItj7Z3p7+UzdHLr2S/okvHDHYPbZE5gtANDdQ3ZL1nBA==",
-      "requires": {
-        "@ethersproject/address": "^5.0.9",
-        "@ethersproject/bignumber": "^5.0.13",
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/constants": "^5.0.8",
-        "@ethersproject/keccak256": "^5.0.7",
-        "@ethersproject/logger": "^5.0.8",
-        "@ethersproject/properties": "^5.0.7",
-        "@ethersproject/rlp": "^5.0.7",
-        "@ethersproject/signing-key": "^5.0.8"
-      }
-    },
-    "@ethersproject/web": {
-      "version": "5.0.12",
-      "resolved": "https://registry.npmjs.org/@ethersproject/web/-/web-5.0.12.tgz",
-      "integrity": "sha512-gVxS5iW0bgidZ76kr7LsTxj4uzN5XpCLzvZrLp8TP+4YgxHfCeetFyQkRPgBEAJdNrexdSBayvyJvzGvOq0O8g==",
-      "requires": {
-        "@ethersproject/base64": "^5.0.7",
-        "@ethersproject/bytes": "^5.0.9",
-        "@ethersproject/logger": "^5.0.8",
-        "@ethersproject/properties": "^5.0.7",
-        "@ethersproject/strings": "^5.0.8"
-      }
-    },
-    "@resolver-engine/core": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/@resolver-engine/core/-/core-0.2.1.tgz",
-      "integrity": "sha512-nsLQHmPJ77QuifqsIvqjaF5B9aHnDzJjp73Q1z6apY3e9nqYrx4Dtowhpsf7Jwftg/XzVDEMQC+OzUBNTS+S1A==",
-      "requires": {
-        "debug": "^3.1.0",
-        "request": "^2.85.0"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "3.2.6",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
-          "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
-          "requires": {
-            "ms": "^2.1.1"
-          }
-        },
-        "ms": {
-          "version": "2.1.2",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
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-      }
-    },
-    "@resolver-engine/fs": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/@resolver-engine/fs/-/fs-0.2.1.tgz",
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-    },
-    "yaeti": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/yaeti/-/yaeti-0.0.6.tgz",
-      "integrity": "sha1-8m9ITXJoTPQr7ft2lwqhYI+/lXc="
-    },
-    "yallist": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
-      "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g=="
-    },
-    "yargs": {
-      "version": "4.8.1",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-4.8.1.tgz",
-      "integrity": "sha1-wMQpJMpKqmsObaFznfshZDn53cA=",
-      "requires": {
-        "cliui": "^3.2.0",
-        "decamelize": "^1.1.1",
-        "get-caller-file": "^1.0.1",
-        "lodash.assign": "^4.0.3",
-        "os-locale": "^1.4.0",
-        "read-pkg-up": "^1.0.1",
-        "require-directory": "^2.1.1",
-        "require-main-filename": "^1.0.1",
-        "set-blocking": "^2.0.0",
-        "string-width": "^1.0.1",
-        "which-module": "^1.0.0",
-        "window-size": "^0.2.0",
-        "y18n": "^3.2.1",
-        "yargs-parser": "^2.4.1"
-      }
-    },
-    "yargs-parser": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-2.4.1.tgz",
-      "integrity": "sha1-hVaN488VD/SfpRgl8DqMiA3cxcQ=",
-      "requires": {
-        "camelcase": "^3.0.0",
-        "lodash.assign": "^4.0.6"
-      }
-    }
-  }
-}
diff --git a/package.json b/package.json
index e632cc37..16964c6d 100644
--- a/package.json
+++ b/package.json
@@ -4,20 +4,12 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "testrpc": "ganache-cli --mnemonic 'clock radar mass judge dismiss just intact mind resemble fringe diary casino' --gasLimit 13000000 -e 100000",
-    "truffle": "truffle",
-    "truffle:test": "truffle test",
     "truffle:compile": "truffle compile",
-    "truffle:migrate": "truffle migrate",
-    "test:ci": "scripts/run-test.sh",
-    "lint": "npm run lint:sol && npm run lint:js",
-    "lint:js": "eslint test/**/*.js",
-    "lint:sol:fix": "solium -d contracts/ --fix",
-    "lint:sol": "solium -d contracts/",
-    "flatten": "truffle-flattener contracts/BSCValidatorSet.sol > contracts/flattened/BSCValidatorSet.sol && truffle-flattener contracts/GovHub.sol > contracts/flattened/GovHub.sol && truffle-flattener contracts/RelayerHub.sol > contracts/flattened/RelayerHub.sol && truffle-flattener contracts/RelayerIncentivize.sol > contracts/flattened/RelayerIncentivize.sol && truffle-flattener contracts/SlashIndicator.sol > contracts/flattened/SlashIndicator.sol && truffle-flattener contracts/SystemReward.sol > contracts/flattened/SystemReward.sol && truffle-flattener contracts/TendermintLightClient.sol > contracts/flattened/TendermintLightClient.sol && truffle-flattener contracts/TokenHub.sol > contracts/flattened/TokenHub.sol && truffle-flattener contracts/CrossChain.sol > contracts/flattened/CrossChain.sol && truffle-flattener contracts/TokenManager.sol > contracts/flattened/TokenManager.sol",
-    "generate-test": "node generate-system.js --mock true && node generate-systemReward.js --mock true && node generate-validatorset.js --mock true && node generate-system.js --mock true && node generate-crosschain.js --mock true && node generate-tokenhub.js --mock true && node generate-tendermintlightclient.js --mock true && node generate-relayerincentivizecontract.js --roundSize 30 --maximumWeight 3 --mock true && node generate-slash.js --mock true",
-    "generate-mainnet": "node generate-genesis.js --chainid 56 --bscChainId 0038 --initBurnRatio 1000 --initConsensusStateBytes 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 --initValidatorSetBytes 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",
-    "generate-testnet": "node generate-genesis.js --chainid 97 --bscChainId 0061 --initBurnRatio 1000  --initConsensusStateBytes 42696e616e63652d436861696e2d47616e67657300000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000aea1ac326886b992a991d21a6eb155f41b77867cbf659e78f31d89d8205122a84d1be64f0e9a466c2e66a53433928192783e29f8fa21beb2133499b5ef770f60000000e8d4a5100099308aa365c40554bc89982af505d85da95251445d5dd4a9bb37dd2584fd92d3000000e8d4a5100001776920ff0b0f38d78cf95c033c21adf7045785114e392a7544179652e0a612000000e8d4a51000 --initValidatorSetBytes 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"
+    "flatten": "truffle-flattener contracts/BSCValidatorSet.sol > contracts/flattened/BSCValidatorSet.sol && truffle-flattener contracts/GovHub.sol > contracts/flattened/GovHub.sol && truffle-flattener contracts/RelayerHub.sol > contracts/flattened/RelayerHub.sol && truffle-flattener contracts/RelayerIncentivize.sol > contracts/flattened/RelayerIncentivize.sol && truffle-flattener contracts/SlashIndicator.sol > contracts/flattened/SlashIndicator.sol && truffle-flattener contracts/SystemReward.sol > contracts/flattened/SystemReward.sol && truffle-flattener contracts/TendermintLightClient.sol > contracts/flattened/TendermintLightClient.sol && truffle-flattener contracts/TokenHub.sol > contracts/flattened/TokenHub.sol && truffle-flattener contracts/CrossChain.sol > contracts/flattened/CrossChain.sol && truffle-flattener contracts/TokenManager.sol > contracts/flattened/TokenManager.sol && truffle-flattener contracts/Staking.sol > contracts/flattened/Staking.sol",
+    "generate-QA": "node generate-genesis.js --network QA --chainid 714 --bscChainId 02ca --initBurnRatio 1000  --initConsensusStateBytes 42696e616e63652d436861696e2d47616e67657300000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000aea1ac326886b992a991d21a6eb155f41b77867cbf659e78f31d89d8205122a84d1be64f0e9a466c2e66a53433928192783e29f8fa21beb2133499b5ef770f60000000e8d4a5100099308aa365c40554bc89982af505d85da95251445d5dd4a9bb37dd2584fd92d3000000e8d4a5100001776920ff0b0f38d78cf95c033c21adf7045785114e392a7544179652e0a612000000e8d4a51000 --initValidatorSetBytes f901a880f901a4f844941284214b9b9c85549ab3d2b972df0deef66ac2c9946ddf42a51534fc98d0c0a3b42c963cace8441ddf946ddf42a51534fc98d0c0a3b42c963cace8441ddf8410000000f84494a2959d3f95eae5dc7d70144ce1b73b403b7eb6e0948081ef03f1d9e0bb4a5bf38f16285c879299f07f948081ef03f1d9e0bb4a5bf38f16285c879299f07f8410000000f8449435552c16704d214347f29fa77f77da6d75d7c75294dc4973e838e3949c77aced16ac2315dc2d7ab11194dc4973e838e3949c77aced16ac2315dc2d7ab1118410000000f84494980a75ecd1309ea12fa2ed87a8744fbfc9b863d594cc6ac05c95a99c1f7b5f88de0e3486c82293b27094cc6ac05c95a99c1f7b5f88de0e3486c82293b2708410000000f84494f474cf03cceff28abc65c9cbae594f725c80e12d94e61a183325a18a173319dd8e19c8d069459e217594e61a183325a18a173319dd8e19c8d069459e21758410000000f84494b71b214cb885500844365e95cd9942c7276e7fd894d22ca3ba2141d23adab65ce4940eb7665ea2b6a794d22ca3ba2141d23adab65ce4940eb7665ea2b6a78410000000",
+    "generate-test": "node generate-system.js --mock true --network local && node generate-systemReward.js --mock true && node generate-validatorset.js --mock true && node generate-relayerhub.js --mock true && node generate-crosschain.js --mock true && node generate-tokenhub.js --mock true && node generate-tendermintlightclient.js --mock true && node generate-relayerincentivizecontract.js --roundSize 30 --maximumWeight 3 --mock true && node generate-slash.js --mock true && node generate-systemReward.js --mock true",
+    "generate-mainnet": "node generate-genesis.js --network mainnet --chainid 56 --bscChainId 0038 --initBurnRatio 1000 --initConsensusStateBytes 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 --initValidatorSetBytes 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",
+    "generate-testnet": "node generate-genesis.js --network testnet --chainid 97 --bscChainId 0061 --initBurnRatio 1000  --initConsensusStateBytes 42696e616e63652d436861696e2d47616e67657300000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000aea1ac326886b992a991d21a6eb155f41b77867cbf659e78f31d89d8205122a84d1be64f0e9a466c2e66a53433928192783e29f8fa21beb2133499b5ef770f60000000e8d4a5100099308aa365c40554bc89982af505d85da95251445d5dd4a9bb37dd2584fd92d3000000e8d4a5100001776920ff0b0f38d78cf95c033c21adf7045785114e392a7544179652e0a612000000e8d4a51000 --initValidatorSetBytes 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"
   },
   "author": "",
   "license": "MIT",
@@ -25,17 +17,11 @@
     "commander": "^3.0.1",
     "nunjucks": "^3.2.0",
     "openzeppelin-solidity": "v3.0.0-rc.0",
-    "solidity-bytes-utils": "0.0.8",
-    "solium": "^1.2.5",
-    "truffle-assertions": "0.9.2",
+    "rlp": "^2.2.7",
     "truffle-flattener": "1.4.4",
-    "web3": "1.3.1",
-    "await-sleep": "0.0.1",
-    "ethereum-input-data-decoder": "0.3.0",
-    "rlp": "2.2.5",
-    "elliptic": ">=6.5.3",
-    "minimist": ">=1.2.3",
-    "mem": ">=4.0.0",
-    "lodash": ">=4.17.19"
+    "web3": "^1.7.0"
+  },
+  "devDependencies": {
+    "truffle": "5.1.14"
   }
 }
diff --git a/test/BSCValidatorSet.js b/test/BSCValidatorSet.js
deleted file mode 100644
index aed19f04..00000000
--- a/test/BSCValidatorSet.js
+++ /dev/null
@@ -1,663 +0,0 @@
-const BSCValidatorSet = artifacts.require("BSCValidatorSet");
-const SystemReward = artifacts.require("SystemReward");
-const LightClient = artifacts.require("MockLightClient");
-const RelayerIncentivize = artifacts.require("RelayerIncentivize");
-const TokenManager = artifacts.require("TokenManager");
-const crypto = require('crypto');
-const MockTokenHub = artifacts.require("mock/MockTokenHub");
-const Web3 = require('web3');
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-const RLP = require('rlp');
-const truffleAssert = require('truffle-assertions');
-const CrossChain = artifacts.require("CrossChain");
-const GovHub = artifacts.require("GovHub");
-const RelayerHub = artifacts.require("RelayerHub");
-const STAKE_CHANNEL_ID = 0x08;
-const GOV_CHANNEL_ID = 0x09;
-const SlashIndicator = artifacts.require("SlashIndicator");
-
-const proof = Buffer.from(web3.utils.hexToBytes("0x00"));
-const merkleHeight = 100;
-
-const packageBytesPrefix = Buffer.from(web3.utils.hexToBytes(
-    "0x00" +
-    "000000000000000000000000000000000000000000000000002386F26FC10000"
-));
-
-contract('BSCValidatorSet', (accounts) => {
-  it('query basic info', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-
-    let totalInComing = await validatorSetInstance.totalInComing.call();
-    assert.equal(totalInComing,0, "totalInComing should be 0");
-
-    let consensusAddr = await validatorSetInstance.getValidators.call()[0];
-    assert.equal(consensusAddr,accounts[9].address, "consensusAddr should be accounts[9]");
-  });
-
-  it('deposit success and fail', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    let validator =  accounts[0];
-    let systemAccount = accounts[0];
-    let tx = await validatorSetInstance.deposit(validator, {from: systemAccount, value: 1e8 });
-
-    truffleAssert.eventEmitted(tx, "validatorDeposit",(ev) => {
-      return ev.amount.toNumber() === 1e8 && ev.validator === validator;
-    });
-
-    let tmpAccount = web3.eth.accounts.create();
-    tx = await validatorSetInstance.deposit(tmpAccount.address, {from: systemAccount, value: 1e8 });
-
-    truffleAssert.eventEmitted(tx, "deprecatedDeposit",(ev) => {
-      return ev.amount.toNumber() === 1e8 && ev.validator === tmpAccount.address;
-    });
-
-    try{
-      await validatorSetInstance.deposit(validator, {from: accounts[2], value: 1e8 });
-      assert.fail();
-    }catch (error) {
-      assert.ok(error.toString().includes("the message sender must be the block producer"));
-    }
-
-    try{
-      await validatorSetInstance.deposit(validator, {from: systemAccount, value: 0 });
-      assert.fail();
-    }catch (error) {
-      assert.ok(error.toString().includes("deposit value is zero"));
-    }
-
-    try{
-      await validatorSetInstance.send(1e8, {from: systemAccount});
-      assert.fail();
-    }catch (error) {
-    }
-
-    let totalInComing = await validatorSetInstance.totalInComing.call();
-    assert.equal(totalInComing.toNumber(),1e8, "totalInComing should be 1e8");
-
-    let balance_wei = await web3.eth.getBalance(validatorSetInstance.address);
-    assert.equal(balance_wei, 2e8, "balance not equal");
-  });
-
-
-
-});
-
-contract('BSCValidatorSet', (accounts) => {
-  it('test distribute algorithm', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    const systemRewardInstance = await SystemReward.deployed();
-
-    let validator =  accounts[0];
-    let systemAccount = accounts[0];
-    let tmpAccount = web3.eth.accounts.create();
-
-    // enough reward in system reward pool
-    await systemRewardInstance.send(web3.utils.toBN(1e18), {from: accounts[1]});
-
-
-    for(let i =0;i <5; i++){
-      await validatorSetInstance.deposit(validator, {from: systemAccount, value: 1e8 });
-      await validatorSetInstance.deposit(tmpAccount.address, {from: systemAccount, value: 1e8 });
-    }
-
-    for(let i =0;i <5; i++){
-      await validatorSetInstance.deposit(validator, {from: systemAccount, value: web3.utils.toBN(1e18) });
-      await validatorSetInstance.deposit(tmpAccount.address, {from: systemAccount, value: web3.utils.toBN(1e18) });
-    }
-
-    let newValidator = web3.eth.accounts.create();
-    let relayerAccount = accounts[8];
-
-    //before
-    let totalBalance = await web3.eth.getBalance(validatorSetInstance.address);
-    let totalInComing = await validatorSetInstance.totalInComing.call();
-    let relayerBalance = await web3.eth.getBalance(relayerAccount);
-
-    assert.equal(totalInComing.toString(), web3.utils.toBN(5e18).add(web3.utils.toBN(5e8)).toString(), "totalInComing is not correct");
-    assert.equal(totalBalance.toString(), web3.utils.toBN(1e19).add(web3.utils.toBN(1e9)).toString(), "totalbalance is not correct");
-
-    // do update
-    let packageBytes = validatorUpdateRlpEncode([newValidator.address],
-        [newValidator.address],[newValidator.address]);
-    let tx = await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    truffleAssert.eventEmitted(tx, "validatorSetUpdated");
-    truffleAssert.eventEmitted(tx, "batchTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(5e18).toString();
-    });
-    truffleAssert.eventEmitted(tx, "systemTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(5e18).add(web3.utils.toBN(1e9)).toString();
-    });
-
-    let used_wei = web3.utils.toBN(20000000000).muln(tx.receipt.gasUsed);
-
-    // after
-    totalBalance = await web3.eth.getBalance(validatorSetInstance.address);
-    totalInComing = await validatorSetInstance.totalInComing.call();
-    let afterRelayerBalance = await web3.eth.getBalance(relayerAccount);
-
-    assert.equal(web3.utils.toBN(relayerBalance).sub(web3.utils.toBN(afterRelayerBalance)).toString(), used_wei.toString(), "totalInComing is not correct");
-    assert.equal(totalInComing.toNumber(), 0, "totalInComing is not correct");
-    assert.equal(totalBalance, 0, "totalbalance is not correct");
-
-  });
-
-});
-
-contract('BSCValidatorSet', (accounts) => {
-  it('test distribute algorithm with 41 validators', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    const systemRewardInstance = await SystemReward.deployed();
-
-    let systemAccount = accounts[0];
-    let relayerAccount = accounts[8];
-
-    // enough reward in system reward pool
-    await systemRewardInstance.send(web3.utils.toBN(1e18), {from: accounts[1]});
-
-    let newValidators = [];
-    for(let i =0;i <41; i++) {
-      newValidators.push(web3.eth.accounts.create().address)
-    }
-    let packageBytes = validatorUpdateRlpEncode(newValidators,
-        newValidators,newValidators);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    // do deposit
-    for(let i =0;i <41; i++){
-      await validatorSetInstance.deposit(newValidators[i], {from: systemAccount, value: 1e18 });
-    }
-
-    // do update
-    let updateValidators = [];
-    for(let i =0;i <41; i++) {
-      updateValidators.push(web3.eth.accounts.create().address)
-    }
-    packageBytes = validatorUpdateRlpEncode(updateValidators,
-        updateValidators,updateValidators);
-    let tx = await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-    console.log("The total gasUsd is", tx.receipt.gasUsed)
-  });
-
-});
-
-contract('BSCValidatorSet', (accounts) => {
-  it('complicate validatorSet change and test valdiatorset map', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    const systemRewardInstance = await SystemReward.deployed();
-
-    let validatorA =  accounts[0];
-    let validatorB = web3.eth.accounts.create().address;
-    let validatorC = web3.eth.accounts.create().address;
-    let validatorD = web3.eth.accounts.create().address;
-    let validatorE = web3.eth.accounts.create().address;
-    let relayerAccount = accounts[8];
-
-    // enough reward in system reward pool
-    await systemRewardInstance.send(web3.utils.toBN(1e18), {from: accounts[1]});
-
-    await validatorSetInstance.getValidators.call();
-    let arrs = [[validatorB,validatorA,validatorC,validatorD],
-                [validatorB,validatorC,validatorE],
-                [validatorB,validatorC,validatorE],
-                [validatorE,validatorC,validatorB],
-                [validatorE,validatorC,validatorB,validatorA,validatorD],
-                [validatorE,validatorC,validatorB,validatorA]];
-    for(let j=0;j<arrs.length;j++){
-      let arr = arrs[j];
-      let packageBytes = validatorUpdateRlpEncode(arr, arr,arr);
-      await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-      let consensusAddres = await validatorSetInstance.getValidators.call();
-      assert.equal(consensusAddres.length, arr.length);
-      for(let i =0;i<consensusAddres.length;i++){
-        assert.equal(consensusAddres[i],arr[i], "consensusAddr not equal");
-      }
-      for(let k=0;k<arr.length;k++){
-        let exist = await validatorSetInstance.isValidatorExist.call(arr[k]);
-        if (!exist){
-          console.log(j, k);
-        }
-        assert.equal(exist,true, "the address should be a validator");
-      }
-    }
-  });
-});
-
-
-contract('BSCValidatorSet', (accounts) => {
-  it('failed to update', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    const systemRewardInstance = await SystemReward.deployed();
-    const crossChain = await CrossChain.deployed();
-
-    let validatorA =  accounts[0];
-    let validatorB = web3.eth.accounts.create().address;
-    let validatorC = web3.eth.accounts.create().address;
-    let validatorD = web3.eth.accounts.create().address;
-    let validatorE = web3.eth.accounts.create().address;
-    let relayerAccount = accounts[8];
-    // enough reward in system reward pool
-    await systemRewardInstance.send(web3.utils.toBN(1e18), {from: accounts[1]});
-
-    let arrs = [[validatorB,validatorA,validatorC,validatorD],
-      [validatorB,validatorB,validatorE],
-      [validatorC,validatorC,validatorB],
-      []];
-    let packageBytes = validatorUpdateRlpEncode(arrs[0], arrs[0], arrs[0]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    for(let j=1;j<arrs.length-1;j++){
-      let arr = arrs[j];
-      let packageBytes = validatorUpdateRlpEncode(arr, arr,arr);
-      let tx = await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-      truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-        return ev.message === "duplicate consensus address of validatorSet";
-      });
-    }
-    let arr =arrs[3];
-
-    packageBytes = validatorUpdateRlpEncode(arr, arr,arr);
-    let tx = await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-    truffleAssert.eventNotEmitted(tx, "failReasonWithStr");
-    // block the light client
-    const lightClientInstance = await LightClient.deployed();
-    await lightClientInstance.setBlockNotSynced(true);
-
-    let validArray = arrs[0];
-    try{
-      packageBytes = validatorUpdateRlpEncode(validArray, validArray,validArray);
-      await crossChain.handlePackage(Buffer.concat([packageBytesPrefix, packageBytes]), crypto.randomBytes(32),100, 0, STAKE_CHANNEL_ID, {from: relayerAccount});
-      assert.fail();
-    }catch(error){
-      assert.ok(error.toString().includes("light client not sync the block yet"));
-    }
-    await lightClientInstance.setBlockNotSynced(false);
-    try{
-      packageBytes = validatorUpdateRlpEncode(validArray, validArray,validArray);
-      await crossChain.handlePackage(Buffer.concat([packageBytesPrefix, packageBytes]), crypto.randomBytes(32),100, 0, STAKE_CHANNEL_ID, {from: accounts[4]});
-      assert.fail();
-    }catch(error){
-      assert.ok(error.toString().includes("the msg sender is not a relayer"));
-    }
-
-  });
-});
-
-contract('BSCValidatorSet', (accounts) => {
-  it('complicate distribute', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    const systemRewardInstance = await SystemReward.deployed();
-
-    let validatorA = web3.eth.accounts.create().address;
-    let validatorB = web3.eth.accounts.create().address;
-    let validatorC = web3.eth.accounts.create().address;
-    let validatorD = web3.eth.accounts.create().address;
-    let validatorE = web3.eth.accounts.create().address;
-    let deprecated = web3.eth.accounts.create().address;
-    let relayerAccount = accounts[8];
-    let systemAccount = accounts[0];
-
-    // enough reward in system reward pool
-    await systemRewardInstance.send(web3.utils.toBN(1e18), {from: accounts[1]});
-
-    await validatorSetInstance.getValidators.call();
-    let arr = [validatorA,validatorB,validatorC,validatorD,validatorE];
-
-    let packageBytes = validatorUpdateRlpEncode(arr, arr,arr);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    // deposit A: 1e16 B:1e16 C:1e17, D: 1e18, E:1e19, deprecated: 1e18
-    await validatorSetInstance.deposit(validatorA, {from: systemAccount, value: web3.utils.toBN(1e16) });
-    await validatorSetInstance.deposit(validatorB, {from: systemAccount, value: web3.utils.toBN(1e16) });
-    await validatorSetInstance.deposit(validatorC, {from: systemAccount, value: web3.utils.toBN(1e17) });
-    await validatorSetInstance.deposit(validatorD, {from: systemAccount, value: web3.utils.toBN(1e18) });
-    await validatorSetInstance.deposit(validatorE, {from: systemAccount, value: web3.utils.toBN(1e18) });
-    await validatorSetInstance.deposit(deprecated, {from: systemAccount, value: web3.utils.toBN(1e18) });
-
-    //add some dust incoming
-    await validatorSetInstance.deposit(validatorE, {from: systemAccount, value: web3.utils.toBN(1e5) });
-
-    packageBytes = validatorUpdateRlpEncode(arr, arr,arr);
-    let tx = await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-    let validatorABalance = await web3.eth.getBalance(validatorA);
-    let validatorBBalance = await web3.eth.getBalance(validatorB);
-    let validatorCBalance = await web3.eth.getBalance(validatorC);
-    let validatorDBalance = await web3.eth.getBalance(validatorD);
-    let validatorEBalance = await web3.eth.getBalance(validatorE);
-    let deprecatedBalance = await web3.eth.getBalance(deprecated);
-
-    assert.equal(validatorABalance,web3.utils.toBN(1e16));
-    assert.equal(validatorBBalance,web3.utils.toBN(1e16));
-    assert.equal(validatorCBalance,0);
-    assert.equal(validatorDBalance,0);
-    assert.equal(validatorEBalance,0);
-    assert.equal(deprecatedBalance,0);
-
-    truffleAssert.eventEmitted(tx, "validatorSetUpdated");
-    truffleAssert.eventEmitted(tx, "batchTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(21e17).toString();
-    });
-    truffleAssert.eventEmitted(tx, "directTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(1e16).toString();
-    });
-    truffleAssert.eventEmitted(tx, "systemTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(1e18).add(web3.utils.toBN(1e5)).toString();
-    });
-  });
-});
-
-
-contract('BSCValidatorSet', (accounts) => {
-  it('complicate distribute when one validar fee addr is contract', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    const systemRewardInstance = await SystemReward.deployed();
-
-    let validatorA = validatorSetInstance.address;
-    let validatorB = web3.eth.accounts.create().address;
-    let validatorC = web3.eth.accounts.create().address;
-    let validatorD = web3.eth.accounts.create().address;
-    let validatorE = web3.eth.accounts.create().address;
-    let deprecated = web3.eth.accounts.create().address;
-    let relayerAccount = accounts[8];
-    let systemAccount = accounts[0];
-
-    // enough reward in system reward pool
-    await systemRewardInstance.send(web3.utils.toBN(1e18), {from: accounts[1]});
-
-    await validatorSetInstance.getValidators.call();
-    let arr = [validatorA,validatorB,validatorC,validatorD,validatorE];
-
-    let packageBytes = validatorUpdateRlpEncode(arr, arr,arr);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    // deposit A: 1e16 B:1e16 C:1e17, D: 1e18, E:1e19, deprecated: 1e18
-    await validatorSetInstance.deposit(validatorA, {from: systemAccount, value: web3.utils.toBN(1e16) });
-    await validatorSetInstance.deposit(validatorB, {from: systemAccount, value: web3.utils.toBN(1e16) });
-    await validatorSetInstance.deposit(validatorC, {from: systemAccount, value: web3.utils.toBN(1e17) });
-    await validatorSetInstance.deposit(validatorD, {from: systemAccount, value: web3.utils.toBN(1e18) });
-    await validatorSetInstance.deposit(validatorE, {from: systemAccount, value: web3.utils.toBN(1e18) });
-    await validatorSetInstance.deposit(deprecated, {from: systemAccount, value: web3.utils.toBN(1e18) });
-
-    //add some dust incoming
-    await validatorSetInstance.deposit(validatorE, {from: systemAccount, value: web3.utils.toBN(1e5) });
-
-    packageBytes = validatorUpdateRlpEncode(arr, arr,arr);
-    let tx = await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    let validatorABalance = await web3.eth.getBalance(validatorA);
-    let validatorBBalance = await web3.eth.getBalance(validatorB);
-    let validatorCBalance = await web3.eth.getBalance(validatorC);
-    let validatorDBalance = await web3.eth.getBalance(validatorD);
-    let validatorEBalance = await web3.eth.getBalance(validatorE);
-    let deprecatedBalance = await web3.eth.getBalance(deprecated);
-
-    assert.equal(validatorABalance,0);
-    assert.equal(validatorBBalance,web3.utils.toBN(1e16));
-    assert.equal(validatorCBalance,0);
-    assert.equal(validatorDBalance,0);
-    assert.equal(validatorEBalance,0);
-    assert.equal(deprecatedBalance,0);
-
-    truffleAssert.eventEmitted(tx, "validatorSetUpdated");
-    truffleAssert.eventEmitted(tx, "batchTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(21e17).toString();
-    });
-    truffleAssert.eventEmitted(tx, "directTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(1e16).toString();
-    });
-    truffleAssert.eventEmitted(tx, "directTransferFail",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(1e16).toString();
-    });
-    truffleAssert.eventEmitted(tx, "systemTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(1e18).add(web3.utils.toBN(1e5)).add(web3.utils.toBN(1e16)).toString();
-    });
-  });
-});
-
-contract('BSCValidatorSet', (accounts) => {
-  it('complicate distribute when cross chain transfer failed', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    const systemRewardInstance = await SystemReward.deployed();
-    const tokenHub = await MockTokenHub.deployed();
-
-    let validatorA = validatorSetInstance.address;
-    let validatorB = web3.eth.accounts.create().address;
-    let validatorC = web3.eth.accounts.create().address;
-    let validatorD = web3.eth.accounts.create().address;
-    let validatorE = web3.eth.accounts.create().address;
-    let deprecated = web3.eth.accounts.create().address;
-    let relayerAccount = accounts[8];
-    let systemAccount = accounts[0];
-    await  tokenHub.setPanicBatchTransferOut(true);
-
-    // enough reward in system reward pool
-    await systemRewardInstance.send(web3.utils.toBN(1e18), {from: accounts[1]});
-
-    await validatorSetInstance.getValidators.call();
-    let arr = [validatorA,validatorB,validatorC,validatorD,validatorE];
-
-    let packageBytes = validatorUpdateRlpEncode(arr, arr,arr);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID, packageBytes, {from: relayerAccount});
-
-    // deposit A: 1e16 B:1e16 C:1e17, D: 1e18, E:1e19, deprecated: 1e18
-    await validatorSetInstance.deposit(validatorA, {from: systemAccount, value: web3.utils.toBN(1e16) });
-    await validatorSetInstance.deposit(validatorB, {from: systemAccount, value: web3.utils.toBN(1e16) });
-    await validatorSetInstance.deposit(validatorC, {from: systemAccount, value: web3.utils.toBN(1e17) });
-    await validatorSetInstance.deposit(validatorD, {from: systemAccount, value: web3.utils.toBN(1e18) });
-    await validatorSetInstance.deposit(validatorE, {from: systemAccount, value: web3.utils.toBN(1e18) });
-    await validatorSetInstance.deposit(deprecated, {from: systemAccount, value: web3.utils.toBN(1e18) });
-
-    //add some dust incoming
-    await validatorSetInstance.deposit(validatorE, {from: systemAccount, value: web3.utils.toBN(1e5) });
-
-    packageBytes = validatorUpdateRlpEncode(arr, arr,arr);
-    let tx = await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    let validatorABalance = await web3.eth.getBalance(validatorA);
-    let validatorBBalance = await web3.eth.getBalance(validatorB);
-    let validatorCBalance = await web3.eth.getBalance(validatorC);
-    let validatorDBalance = await web3.eth.getBalance(validatorD);
-    let validatorEBalance = await web3.eth.getBalance(validatorE);
-    let deprecatedBalance = await web3.eth.getBalance(deprecated);
-
-    assert.equal(validatorABalance, 0);
-    assert.equal(validatorBBalance, web3.utils.toBN(1e16));
-    assert.equal(validatorCBalance, web3.utils.toBN(1e17));
-    assert.equal(validatorDBalance, web3.utils.toBN(1e18));
-    assert.equal(validatorEBalance, web3.utils.toBN(1e18).add(web3.utils.toBN(1e5)));
-    assert.equal(deprecatedBalance, 0);
-
-    truffleAssert.eventEmitted(tx, "validatorSetUpdated");
-    truffleAssert.eventEmitted(tx, "batchTransferFailed",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(21e17).toString();
-    });
-    truffleAssert.eventEmitted(tx, "directTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(1e16).toString();
-    });
-    truffleAssert.eventEmitted(tx, "directTransferFail",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(1e16).toString();
-    });
-    truffleAssert.eventEmitted(tx, "systemTransfer",(ev) => {
-      return ev.amount.toString() === web3.utils.toBN(1e18).add(web3.utils.toBN(1e16)).toString();
-    });
-  });
-});
-
-contract('BSCValidatorSet', (accounts) => {
-  it('validator jail', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-
-    let newValidator1 = web3.eth.accounts.create();
-    let newValidator2 = web3.eth.accounts.create();
-    let newValidator3 = web3.eth.accounts.create();
-    let relayerAccount = accounts[8];
-
-    // do update
-    let packageBytes = validatorUpdateRlpEncode([newValidator1.address, newValidator2.address, newValidator3.address],
-        [newValidator1.address, newValidator2.address, newValidator3.address], [newValidator1.address, newValidator2.address, newValidator3.address]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    let consensusAddres = await validatorSetInstance.getValidators.call();
-    assert.equal(consensusAddres.length, 3);
-    assert.equal(consensusAddres[0], newValidator1.address);
-    assert.equal(consensusAddres[1], newValidator2.address);
-    assert.equal(consensusAddres[2], newValidator3.address);
-
-    packageBytes = jailRlpEncode([newValidator1.address, newValidator2.address, newValidator3.address],
-        [newValidator1.address, newValidator2.address, newValidator3.address], [newValidator1.address, newValidator2.address, newValidator3.address]);
-    let tx = await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-      return ev.message === "length of jail validators must be one";
-    });
-
-    packageBytes = jailRlpEncode([newValidator1.address], [newValidator1.address], [newValidator1.address]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    consensusAddres = await validatorSetInstance.getValidators.call();
-    assert.equal(consensusAddres.length, 2);
-    assert.equal(consensusAddres[0], newValidator2.address);
-    assert.equal(consensusAddres[1], newValidator3.address);
-
-    // ok to re jail
-    packageBytes = jailRlpEncode([newValidator1.address], [newValidator1.address], [newValidator1.address]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    packageBytes = jailRlpEncode([newValidator2.address], [newValidator2.address], [newValidator2.address]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    consensusAddres = await validatorSetInstance.getValidators.call();
-    assert.equal(consensusAddres.length, 1);
-    assert.equal(consensusAddres[0], newValidator3.address);
-
-    // can not jail if it is the last one validator
-    packageBytes = jailRlpEncode([newValidator3.address], [newValidator3.address], [newValidator3.address]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    consensusAddres = await validatorSetInstance.getValidators.call();
-    assert.equal(consensusAddres.length, 1);
-    assert.equal(consensusAddres[0], newValidator3.address);
-
-  });
-});
-
-contract('BSCValidatorSet', (accounts) => {
-  it('test distribute algorithm with more than 41 validators', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    let relayerAccount = accounts[8];
-
-    let newValidators = [];
-    for (let i = 0; i < 42; i++) {
-      newValidators.push(web3.eth.accounts.create().address)
-    }
-    let packageBytes = validatorUpdateRlpEncode(newValidators,
-        newValidators, newValidators);
-    let tx = await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID, packageBytes, {from: relayerAccount});
-    
-    truffleAssert.eventEmitted(tx, "failReasonWithStr", (ev) => {
-      return ev.message === "the number of validators exceed the limit";
-    });
-  });
-});
-
-contract('BSCValidatorSet', (accounts) => {
-  it('burn', async () => {
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    let systemAccount = accounts[0];
-    let validator =  accounts[0];
-
-    let relayerAccount = accounts[8];
-    const crossChain = await CrossChain.deployed();
-    const govHub = await GovHub.deployed();
-    const relayer = accounts[2];
-
-    const relayerInstance = await RelayerHub.deployed();
-    await relayerInstance.register({from: relayer, value: 1e20});
-
-    let initialBurnRatio = await validatorSetInstance.burnRatio.call();
-    assert.equal(web3.utils.toBN(initialBurnRatio).eq(web3.utils.toBN(0)), true, "wrong burnRatio");
-
-    await govHub.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, LightClient.address, MockTokenHub.address, RelayerIncentivize.address, RelayerHub.address, GovHub.address, TokenManager.address, crossChain.address);
-
-    let govChannelSeq = await crossChain.channelReceiveSequenceMap(GOV_CHANNEL_ID);
-    let govValue = "0x0000000000000000000000000000000000000000000000000000000000000BB8";// 3000;
-    let govPackageBytes = serializeGovPack("burnRatio", govValue, validatorSetInstance.address);
-    await crossChain.handlePackage(Buffer.concat([buildSyncPackagePrefix(2e16), (govPackageBytes)]), proof, merkleHeight, govChannelSeq, GOV_CHANNEL_ID, {from: relayer});
-
-    let burnRatio = await validatorSetInstance.burnRatio.call();
-    assert.equal(web3.utils.toBN(burnRatio).eq(web3.utils.toBN(3000)), true, "wrong burnRatio");
-
-    let tx = await validatorSetInstance.deposit(validator, {from: systemAccount, value: 1e8 });
-
-    truffleAssert.eventEmitted(tx, "validatorDeposit",(ev) => {
-      return ev.amount.toNumber() === 7e7 && ev.validator === validator;
-    });
-
-    truffleAssert.eventEmitted(tx, "feeBurned",(ev) => {
-      return ev.amount.toNumber() === 3e7;
-    });
-  });
-});
-
-function jailRlpEncode(consensusAddrList,feeAddrList, bscFeeAddrList) {
-  let pkg = [];
-  pkg.push(0x01);
-  let n = consensusAddrList.length;
-  let vals = [];
-  for(let i = 0;i<n;i++) {
-    vals.push([
-       consensusAddrList[i].toString(),
-       feeAddrList[i].toString(),
-       bscFeeAddrList[i].toString(),
-       0x0000000000000064,
-    ]);
-  }
-  pkg.push(vals);
-  return RLP.encode(pkg)
-}
-
-function validatorUpdateRlpEncode(consensusAddrList,feeAddrList, bscFeeAddrList) {
-  let pkg = [];
-  pkg.push(0x00);
-  let n = consensusAddrList.length;
-  let vals = [];
-  for(let i = 0;i<n;i++) {
-    vals.push([
-      consensusAddrList[i].toString(),
-      feeAddrList[i].toString(),
-      bscFeeAddrList[i].toString(),
-      0x0000000000000064,
-    ]);
-  }
-  pkg.push(vals);
-  return RLP.encode(pkg)
-}
-
-function serializeGovPack(key,value, target,extra) {
-  let pkg = [];
-  pkg.push(key);
-  pkg.push(value);
-  pkg.push(target);
-  if(extra != null){
-    pkg.push(extra);
-  }
-  return RLP.encode(pkg);
-}
-
-function buildSyncPackagePrefix(syncRelayFee) {
-  return Buffer.from(web3.utils.hexToBytes(
-      "0x00" + toBytes32String(syncRelayFee)
-  ));
-}
-
-function toBytes32String(input) {
-  let initialInputHexStr = web3.utils.toBN(input).toString(16);
-  const initialInputHexStrLength = initialInputHexStr.length;
-
-  let inputHexStr = initialInputHexStr;
-  for (var i = 0; i < 64 - initialInputHexStrLength; i++) {
-    inputHexStr = '0' + inputHexStr;
-  }
-  return inputHexStr;
-}
diff --git a/test/GovHub.js b/test/GovHub.js
deleted file mode 100644
index 1ef248ab..00000000
--- a/test/GovHub.js
+++ /dev/null
@@ -1,363 +0,0 @@
-const truffleAssert = require('truffle-assertions');
-const GovHub = artifacts.require("GovHub");
-const BSCValidatorSet = artifacts.require("BSCValidatorSet");
-const CrossChain = artifacts.require("CrossChain");
-const SystemReward = artifacts.require("SystemReward");
-const TokenHub = artifacts.require("TokenHub");
-const RelayerHub = artifacts.require("RelayerHub");
-const RelayerIncentivize = artifacts.require("RelayerIncentivize");
-const TendermintLightClient = artifacts.require("TendermintLightClient");
-const SlashIndicator =  artifacts.require("SlashIndicator");
-const RLP = require('rlp');
-const Web3 = require('web3');
-const GOV_CHANNEL_ID = 0x09;
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-
-contract('GovHub others', (accounts) => {
-    it('Gov others success', async () => {
-        const govHubInstance = await GovHub.deployed();
-        const bSCValidatorSetInstance =await BSCValidatorSet.deployed();
-
-        const relayerAccount = accounts[8];
-        let tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("expireTimeSecondGap", "0x0000000000000000000000000000000000000000000000000000000000010000", bSCValidatorSetInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "expireTimeSecondGap";
-        });
-
-        let reward = await bSCValidatorSetInstance.expireTimeSecondGap.call();
-        assert.equal(reward.toNumber(), 65536, "value not equal");
-    });
-
-    it('Gov others failed', async () => {
-        const govHubInstance = await GovHub.deployed();
-        const bSCValidatorSetInstance =await BSCValidatorSet.deployed();
-        const systemRewardInstance = await SystemReward.deployed();
-        const relayerAccount = accounts[8];
-
-        // unknown  key
-        let tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("unknown key", "0x0000000000000000000000000000000000000000000000000000000000010000", bSCValidatorSetInstance.address),
-            {from: relayerAccount});
-
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "unknown param";
-        });
-        truffleAssert.eventNotEmitted(tx, "paramChange")
-
-        // exceed range  key
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("expireTimeSecondGap", "0x000000000000010000000000000000000000000000000000000000000000000", bSCValidatorSetInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the expireTimeSecondGap is out of range";
-        });
-        truffleAssert.eventNotEmitted(tx, "paramChange")
-
-        // length mismatch
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("expireTimeSecondGap", "0x10000", bSCValidatorSetInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "length of expireTimeSecondGap mismatch";
-        });
-        truffleAssert.eventNotEmitted(tx, "paramChange")
-
-        // address do not exist
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("expireTimeSecondGap", "0x0000000000000000000000000000000000000000000000000000000000000000", "0x1110000000000000000000000000000000001004"),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the target is not a contract";
-        });
-
-        // method do no exist
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("expireTimeSecondGap", "0x0000000000000000000000000000000000000000000000000000000000000000", systemRewardInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "failReasonWithBytes",(ev) => {
-            return ev.message === null;
-        });
-    });
-
-    it('Gov tokenhub', async () => {
-        const govHubInstance = await GovHub.deployed();
-        const tokenHub =await TokenHub.deployed();
-
-        const relayerAccount = accounts[8];
-        let tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("relayFee", "0x00000000000000000000000000000000000000000000000000038d7ea4c68000", tokenHub.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "relayFee";
-        });
-
-        let minimumRelayFee = await tokenHub.relayFee.call();
-        assert.equal(minimumRelayFee.toNumber(), 1000000000000000, "value not equal");
-    });
-
-    it('Gov tendermintLightClient', async () => {
-        const govHubInstance = await GovHub.deployed();
-        const tendermintLightClient =await TendermintLightClient.deployed();
-
-        const relayerAccount = accounts[8];
-        let tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("rewardForValidatorSetChange", "0x0000000000000000000000000000000000000000000000000000000000010000", TendermintLightClient.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "rewardForValidatorSetChange";
-        });
-
-        let rewardForValidatorSetChange = await tendermintLightClient.rewardForValidatorSetChange.call();
-        assert.equal(rewardForValidatorSetChange.toNumber(), 65536, "value not equal");
-    });
-
-    it('Gov RelayerHub', async () => {
-        const govHubInstance = await GovHub.deployed();
-        const relayerHub =await RelayerHub.deployed();
-
-        const relayerAccount = accounts[8];
-        let tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("requiredDeposit", "0x0000000000000000000000000000000000000000000000000000000000010000", relayerHub.address),
-            {from: relayerAccount});
-
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the requiredDeposit out of range";
-        });
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("requiredDeposit", "0x0010000000000000000000000000000000000000000000000000000000000000", relayerHub.address),
-            {from: relayerAccount});
-
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the requiredDeposit out of range";
-        });
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("requiredDeposit", "0x0000000000000000000000000000000000000000000000000000000000000000", relayerHub.address),
-            {from: relayerAccount});
-
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the requiredDeposit out of range";
-        });
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("requiredDeposit", "0x0000000000000000000000000000000000000000000000056bc75e2d63000000", relayerHub.address),
-            {from: relayerAccount});
-
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "requiredDeposit";
-        });
-
-        let requiredDeposit = await relayerHub.requiredDeposit.call();
-        assert.equal(requiredDeposit.toString(), "99999999999998951424", "value not equal");
-
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("dues", "0x0010000000000000000000000000000000000000000000000000000000000000", relayerHub.address),
-            {from: relayerAccount});
-
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the dues out of range";
-        });
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("dues", "0x0000000000000000000000000000000000000000000000000000000000000000", relayerHub.address),
-            {from: relayerAccount});
-
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the dues out of range";
-        });
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("dues", "0x0000000000000000000000000000000000000000000000016bc75e2d63000000", relayerHub.address),
-            {from: relayerAccount});
-
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "dues";
-        });
-
-        let dues = await relayerHub.dues.call();
-        assert.equal(dues.toString(), "26213023705160744960", "value not equal");
-
-    });
-
-    it('Gov relayerIncentivize', async () => {
-        const govHubInstance = await GovHub.deployed();
-        const relayerIncentivize =await RelayerIncentivize.deployed();
-
-        const relayerAccount = accounts[8];
-        let tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("headerRelayerRewardRateMolecule", "0x000000000000000000000000000000000000000000000000000000000000000f", RelayerIncentivize.address),
-            {from: relayerAccount});
-        truffleAssert.eventNotEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "headerRelayerRewardRateMolecule";
-        });
-
-        let headerRelayerRewardRateMolecule = await relayerIncentivize.headerRelayerRewardRateMolecule.call();
-        assert.equal(headerRelayerRewardRateMolecule.toNumber(), 1, "value not equal");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("headerRelayerRewardRateMolecule", "0x0000000000000000000000000000000000000000000000000000000000000002", RelayerIncentivize.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "headerRelayerRewardRateMolecule";
-        });
-
-        headerRelayerRewardRateMolecule = await relayerIncentivize.headerRelayerRewardRateMolecule.call();
-        assert.equal(headerRelayerRewardRateMolecule.toNumber(), 2, "value not equal");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("headerRelayerRewardRateDenominator", "0x0000000000000000000000000000000000000000000000000000000000000001", RelayerIncentivize.address),
-            {from: relayerAccount});
-        truffleAssert.eventNotEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "headerRelayerRewardRateDenominator";
-        });
-
-        let headerRelayerRewardRateDenominator = await relayerIncentivize.headerRelayerRewardRateDenominator.call();
-        assert.equal(headerRelayerRewardRateDenominator.toNumber(), 5, "value not equal");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("headerRelayerRewardRateDenominator", "0x0000000000000000000000000000000000000000000000000000000000000004", RelayerIncentivize.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "headerRelayerRewardRateDenominator";
-        });
-
-        headerRelayerRewardRateDenominator = await relayerIncentivize.headerRelayerRewardRateDenominator.call();
-        assert.equal(headerRelayerRewardRateDenominator.toNumber(), 4, "value not equal");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("callerCompensationMolecule", "0x0000000000000000000000000000000000000000000000000000000000000064", RelayerIncentivize.address),
-            {from: relayerAccount});
-        truffleAssert.eventNotEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "callerCompensationMolecule";
-        });
-
-        let callerCompensationMolecule = await relayerIncentivize.callerCompensationMolecule.call();
-        assert.equal(callerCompensationMolecule.toNumber(), 1, "value not equal");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("callerCompensationMolecule", "0x0000000000000000000000000000000000000000000000000000000000000010", RelayerIncentivize.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "callerCompensationMolecule";
-        });
-
-        callerCompensationMolecule = await relayerIncentivize.callerCompensationMolecule.call();
-        assert.equal(callerCompensationMolecule.toNumber(), 16, "value not equal");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("callerCompensationDenominator", "0x000000000000000000000000000000000000000000000000000000000000000f", RelayerIncentivize.address),
-            {from: relayerAccount});
-        truffleAssert.eventNotEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "callerCompensationDenominator";
-        });
-
-        let callerCompensationDenominator = await relayerIncentivize.callerCompensationDenominator.call();
-        assert.equal(callerCompensationDenominator.toNumber(), 80, "value not equal");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("callerCompensationDenominator", "0x0000000000000000000000000000000000000000000000000000000000000020", RelayerIncentivize.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "callerCompensationDenominator";
-        });
-
-        callerCompensationDenominator = await relayerIncentivize.callerCompensationDenominator.call();
-        assert.equal(callerCompensationDenominator.toNumber(), 32, "value not equal");
-    });
-
-    it('Gov cross chain contract', async () => {
-        const govHubInstance = await GovHub.deployed();
-        const crossChainInstance =await CrossChain.deployed();
-
-        const relayerAccount = accounts[8];
-        let tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("addOrUpdateChannel", web3.utils.bytesToHex(Buffer.concat([Buffer.from(web3.utils.hexToBytes("0x57")), Buffer.from(web3.utils.hexToBytes("0x00")), Buffer.from(web3.utils.hexToBytes(RelayerIncentivize.address))])), crossChainInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === 'addOrUpdateChannel';
-        });
-
-        await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("addOrUpdateChannel", web3.utils.bytesToHex(Buffer.concat([Buffer.from(web3.utils.hexToBytes("0x58")), Buffer.from(web3.utils.hexToBytes("0x00")), Buffer.from(web3.utils.hexToBytes(RelayerIncentivize.address))])), crossChainInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === 'addOrUpdateChannel';
-        });
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("enableOrDisableChannel", web3.utils.bytesToHex(Buffer.concat([Buffer.from(web3.utils.hexToBytes("0x57")), Buffer.from(web3.utils.hexToBytes("0x00"))])), crossChainInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === 'enableOrDisableChannel';
-        });
-
-        let isChannelEnable = await crossChainInstance.registeredContractChannelMap.call(RelayerIncentivize.address, "0x57");
-        assert.equal(isChannelEnable, false, "channel should be disabled");
-        isChannelEnable = await crossChainInstance.registeredContractChannelMap.call(RelayerIncentivize.address, "0x58");
-        assert.equal(isChannelEnable, true, "channel should be enabled");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("enableOrDisableChannel", web3.utils.bytesToHex(Buffer.concat([Buffer.from(web3.utils.hexToBytes("0x57")), Buffer.from(web3.utils.hexToBytes("0x01"))])), crossChainInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === 'enableOrDisableChannel';
-        });
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("enableOrDisableChannel", web3.utils.bytesToHex(Buffer.concat([Buffer.from(web3.utils.hexToBytes("0x58")), Buffer.from(web3.utils.hexToBytes("0x00"))])), crossChainInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === 'enableOrDisableChannel';
-        });
-        isChannelEnable = await crossChainInstance.registeredContractChannelMap.call(RelayerIncentivize.address, "0x57");
-        assert.equal(isChannelEnable, true, "channel should be enabled");
-        isChannelEnable = await crossChainInstance.registeredContractChannelMap.call(RelayerIncentivize.address, "0x58");
-        assert.equal(isChannelEnable, false, "channel should be disabled");
-
-        let appAddr = await crossChainInstance.channelHandlerContractMap.call(0x57);
-        assert.equal(appAddr, RelayerIncentivize.address, "value not equal");
-        let fromSys = await crossChainInstance.isRelayRewardFromSystemReward.call(0x57);
-        assert.equal(fromSys, true, "should from system reward");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("batchSizeForOracle", "0x0000000000000000000000000000000000000000000000000000000000000064", crossChainInstance.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === 'batchSizeForOracle';
-        });
-        let batchSizeForOracle = await crossChainInstance.batchSizeForOracle.call();
-        assert.equal(batchSizeForOracle, 100, "value not equal");
-    });
-
-
-    it('Gov SlashIndicator', async () => {
-        const govHubInstance = await GovHub.deployed();
-        const slashIndicator =await SlashIndicator.deployed();
-
-        const relayerAccount = accounts[8];
-        let tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("felonyThreshold", "0x0000000000000000000000000000000000000000000000000000000000000100", slashIndicator.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "felonyThreshold";
-        });
-        let felonyThreshold = await slashIndicator.felonyThreshold.call();
-        assert.equal(felonyThreshold.toNumber(), 256, "value not equal");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("felonyThreshold", "0x0000000000000000000000000000000000000000000000000000000000010000", slashIndicator.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the felonyThreshold out of range";
-        });
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("felonyThreshold", "0x0000000000000000000000000000000000000000000000000000000000000010", slashIndicator.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the felonyThreshold out of range";
-        });
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("misdemeanorThreshold", "0x00000000000000000000000000000000000000000000000000000000000000f0", slashIndicator.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "paramChange",(ev) => {
-            return ev.key === "misdemeanorThreshold";
-        });
-        let misdemeanorThreshold = await slashIndicator.misdemeanorThreshold.call();
-        assert.equal(misdemeanorThreshold.toNumber(), 240, "value not equal");
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("misdemeanorThreshold", "0x0000000000000000000000000000000000000000000000000000000000000000", slashIndicator.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the misdemeanorThreshold out of range";
-        });
-
-        tx = await govHubInstance.handleSynPackage(GOV_CHANNEL_ID, serialize("misdemeanorThreshold", "0x0000000000000000000000000000000000000000000000000000000000010001", slashIndicator.address),
-            {from: relayerAccount});
-        truffleAssert.eventEmitted(tx, "failReasonWithStr",(ev) => {
-            return ev.message === "the misdemeanorThreshold out of range";
-        });
-    });
-});
-
-function serialize(key,value, target,extra) {
-    let pkg = [];
-    pkg.push(key);
-    pkg.push(value);
-    pkg.push(target);
-    if(extra != null){
-        pkg.push(extra);
-    }
-    return RLP.encode(pkg);
-}
diff --git a/test/GovHub.t.sol b/test/GovHub.t.sol
new file mode 100644
index 00000000..e6f438a2
--- /dev/null
+++ b/test/GovHub.t.sol
@@ -0,0 +1,182 @@
+pragma solidity ^0.8.10;
+
+import "../lib/Deployer.sol";
+
+contract GovHubTest is Deployer {
+  event failReasonWithStr(string message);
+  event failReasonWithBytes(bytes message);
+  event paramChange(string key, bytes valueBytes);
+
+  function setUp() public {}
+
+  function testGovValidatorSet(uint16 value) public {
+    vm.assume(value >= 100);
+    vm.assume(value <= 1e5);
+
+    bytes memory key = "expireTimeSecondGap";
+    bytes memory valueBytes = abi.encode(value);
+    vm.expectEmit(false, false, false, true, address(validator));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(validator));
+    assertEq(uint256(value), validator.expireTimeSecondGap());
+  }
+
+  function testGovTokenHub(uint256 value) public {
+    vm.assume(value > 0);
+    vm.assume(value <= 1e8);
+    value = value * 1e10;
+
+    bytes memory key = "relayFee";
+    bytes memory valueBytes = abi.encode(value);
+    vm.expectEmit(false, false, false, true, address(tokenHub));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(tokenHub));
+    assertEq(value, tokenHub.relayFee());
+  }
+
+  function testGovLightClient(uint256 value) public {
+    vm.assume(value > 0);
+    vm.assume(value <= 1e18);
+
+    bytes memory key = "rewardForValidatorSetChange";
+    bytes memory valueBytes = abi.encode(value);
+    vm.expectEmit(false, false, false, true, address(lightClient));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(lightClient));
+    assertEq(value, lightClient.rewardForValidatorSetChange());
+  }
+
+  function testGovRelayerHub(uint128 value) public {
+    uint256 dues = relayerHub.dues();
+    vm.assume(uint256(value) > dues);
+    vm.assume(value <= 1e21);
+
+    bytes memory key = "requiredDeposit";
+    bytes memory valueBytes = abi.encode(value);
+    vm.expectEmit(false, false, false, true, address(relayerHub));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(relayerHub));
+    assertEq(uint256(value), relayerHub.requiredDeposit());
+  }
+
+  function testGovIncentivize(uint256 value1, uint256 value2, uint256 value3) public {
+    uint256 denominator = incentivize.headerRelayerRewardRateDenominator();
+    vm.assume(value1 <= denominator);
+    vm.assume(value2 >= value1);
+    vm.assume(value2 > 0);
+    vm.assume(value3 > 0);
+    vm.assume(value3 >= value1);
+
+    bytes memory key = "headerRelayerRewardRateMolecule";
+    bytes memory valueBytes = abi.encode(value1);
+    vm.expectEmit(false, false, false, true, address(incentivize));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(incentivize));
+    assertEq(value1, incentivize.headerRelayerRewardRateMolecule());
+
+    key = "headerRelayerRewardRateDenominator";
+    valueBytes = abi.encode(value2);
+    vm.expectEmit(false, false, false, true, address(incentivize));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(incentivize));
+    assertEq(value2, incentivize.headerRelayerRewardRateDenominator());
+
+    key = "callerCompensationDenominator";
+    valueBytes = abi.encode(value3);
+    vm.expectEmit(false, false, false, true, address(incentivize));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(incentivize));
+    assertEq(value3, incentivize.callerCompensationDenominator());
+  }
+
+  function testGovCrossChain(uint16 value) public {
+    vm.assume(value >= 10);
+    vm.assume(value <= 10000);
+
+    bytes memory key = "batchSizeForOracle";
+    bytes memory valueBytes = abi.encode(value);
+    vm.expectEmit(false, false, false, true, address(crossChain));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(crossChain));
+    assertEq(uint256(value), crossChain.batchSizeForOracle());
+
+    key = "addOrUpdateChannel";
+    valueBytes = abi.encodePacked(uint8(0x58), uint8(0x00), address(incentivize));
+    vm.expectEmit(false, false, false, true, address(crossChain));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(crossChain));
+    assertEq(address(incentivize), crossChain.channelHandlerContractMap(0x58));
+
+    key = "enableOrDisableChannel";
+    valueBytes = abi.encodePacked(uint8(0x58), uint8(0x00));
+    vm.expectEmit(false, false, false, true, address(crossChain));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(crossChain));
+    assertEq(false, crossChain.registeredContractChannelMap(address(incentivize), 0x58));
+
+    valueBytes = abi.encodePacked(uint8(0x58), uint8(0x01));
+    vm.expectEmit(false, false, false, true, address(crossChain));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(crossChain));
+    assertTrue(crossChain.registeredContractChannelMap(address(incentivize), 0x58));
+  }
+
+  function testGovSlash(uint16 value1, uint16 value2) public {
+    uint256 misdemeanorThreshold = slash.misdemeanorThreshold();
+    vm.assume(uint256(value1) > misdemeanorThreshold);
+    vm.assume(value1 <= 1000);
+    vm.assume(value2 < value1);
+    vm.assume(value2 > 0);
+
+    bytes memory key = "felonyThreshold";
+    bytes memory valueBytes = abi.encode(value1);
+    vm.expectEmit(false, false, false, true, address(slash));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(slash));
+    assertEq(uint256(value1), slash.felonyThreshold());
+
+    key = "misdemeanorThreshold";
+    valueBytes = abi.encode(value2);
+    vm.expectEmit(false, false, false, true, address(slash));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(slash));
+    assertEq(uint256(value2), slash.misdemeanorThreshold());
+  }
+
+  function testGovFailed(uint256 value) public {
+    // unknown key
+    bytes memory key = "unknownKey";
+    bytes memory valueBytes = abi.encode(value);
+    vm.expectEmit(false, false, false, true, address(govHub));
+    emit failReasonWithStr("unknown param");
+    updateParamByGovHub(key, valueBytes, address(validator));
+
+    // exceed range
+    key = "expireTimeSecondGap";
+    valueBytes = abi.encode(uint256(10));
+    vm.expectEmit(false, false, false, true, address(govHub));
+    emit failReasonWithStr("the expireTimeSecondGap is out of range");
+    updateParamByGovHub(key, valueBytes, address(validator));
+
+    // length mismatch
+    key = "expireTimeSecondGap";
+    valueBytes = abi.encodePacked(uint128(10));
+    vm.expectEmit(false, false, false, true, address(govHub));
+    emit failReasonWithStr("length of expireTimeSecondGap mismatch");
+    updateParamByGovHub(key, valueBytes, address(validator));
+
+    // address do not exist
+    key = "expireTimeSecondGap";
+    valueBytes = abi.encode(uint256(10));
+    vm.expectEmit(false, false, false, true, address(govHub));
+    emit failReasonWithStr("the target is not a contract");
+    updateParamByGovHub(key, valueBytes, addrSet[addrIdx++]);
+
+    // method do no exist
+    key = "expireTimeSecondGap";
+    valueBytes = abi.encode(uint256(10));
+    vm.expectEmit(false, false, false, true, address(govHub));
+    emit failReasonWithBytes(bytes(""));
+    updateParamByGovHub(key, valueBytes, address(systemReward));
+  }
+}
diff --git a/test/RelayerHub.js b/test/RelayerHub.js
deleted file mode 100644
index a8509d4c..00000000
--- a/test/RelayerHub.js
+++ /dev/null
@@ -1,71 +0,0 @@
-const RelayerHub = artifacts.require("RelayerHub");
-const SystemReward = artifacts.require("SystemReward");
-const Web3 = require('web3');
-const truffleAssert = require('truffle-assertions');
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-
-contract('RelayerHub', (accounts) => {
-  it('register and unregister success', async () => {
-    const relayerInstance = await RelayerHub.deployed();
-    const systemRewardInstance = await SystemReward.deployed();
-
-    let tx =await relayerInstance.register({from: accounts[3],value: 1e20});
-    truffleAssert.eventEmitted(tx, "relayerRegister");
-    let res = await relayerInstance.isRelayer.call(accounts[3]);
-    assert.equal(res,true);
-
-    let balanceBefore = await web3.eth.getBalance(accounts[3]);
-    let systemRewardBefore = await web3.eth.getBalance(systemRewardInstance.address);
-
-    tx =await relayerInstance.unregister({from: accounts[3]});
-    truffleAssert.eventEmitted(tx, "relayerUnRegister");
-
-    res = await relayerInstance.isRelayer.call(accounts[3]);
-    assert.equal(res,false);
-
-    let balanceAfter = await web3.eth.getBalance(accounts[3]);
-    assert.equal(res,false);
-    let deposit = await relayerInstance.requiredDeposit.call();
-    let dues = await relayerInstance.dues.call();
-    assert.equal(web3.utils.toBN(balanceAfter).sub(web3.utils.toBN(balanceBefore)).add(web3.utils.toBN(2e10).mul(web3.utils.toBN(tx.receipt.gasUsed))).toString(), deposit.sub(dues).toString());
-
-    let systemRewardAfter = await web3.eth.getBalance(systemRewardInstance.address);
-    assert.equal(web3.utils.toBN(systemRewardAfter).sub(web3.utils.toBN(systemRewardBefore)).toString(), web3.utils.toBN(1e17).toString())
-  });
-
-  it('fail to register', async () => {
-    const relayerInstance = await RelayerHub.deployed();
-    await relayerInstance.register({from: accounts[3],value: 1e20});
-    // reregister
-    try {
-      await relayerInstance.register({from: accounts[3],value: 1e20});
-      assert.fail();
-    } catch (error) {
-      assert.ok(error.toString().includes("relayer already exist"));
-    }
-
-    await relayerInstance.unregister({from: accounts[3]});
-    try {
-      await relayerInstance.unregister({from: accounts[3]});
-      assert.fail();
-    } catch (error) {
-      assert.ok(error.toString().includes("relayer do not exist"));
-    }
-
-    try {
-      await relayerInstance.register({from: accounts[4],value: 2e20});
-      assert.fail();
-    } catch (error) {
-      assert.ok(error.toString().includes("deposit value is not exactly the same"));
-    }
-
-    try {
-      await relayerInstance.register({from: accounts[4],value: 1e10});
-      assert.fail();
-    } catch (error) {
-      assert.ok(error.toString().includes("deposit value is not exactly the same"));
-    }
-
-  });
-});
-
diff --git a/test/RelayerHub.t.sol b/test/RelayerHub.t.sol
new file mode 100644
index 00000000..ce8c9a7e
--- /dev/null
+++ b/test/RelayerHub.t.sol
@@ -0,0 +1,52 @@
+pragma solidity ^0.8.10;
+
+import "../lib/Deployer.sol";
+
+contract RelayerHubTest is Deployer {
+  event relayerRegister(address _relayer);
+  event relayerUnRegister(address _relayer);
+  event paramChange(string key, bytes value);
+
+  uint256 public requiredDeposit;
+  uint256 public dues;
+
+  function setUp() public {
+    requiredDeposit = relayerHub.requiredDeposit();
+    dues = relayerHub.dues();
+  }
+
+  // new relayer register is suspended
+  function testRegister() public {
+    address newRelayer = addrSet[addrIdx++];
+    vm.prank(newRelayer, newRelayer);
+    vm.expectRevert(bytes("register suspended"));
+    relayerHub.register{value: 100 ether}();
+  }
+
+  //  function testCannotRegister() public {
+  //    address newRelayer = addrSet[addrIdx++];
+  //    vm.startPrank(newRelayer, newRelayer);
+  //    relayerHub.register{value: 100 ether}();
+  //
+  //    // re-register
+  //    vm.expectRevert(bytes("relayer already exist"));
+  //    relayerHub.register{value: 100 ether}();
+  //
+  //    relayerHub.unregister();
+  //    // re-unregister
+  //    vm.expectRevert(bytes("relayer do not exist"));
+  //    relayerHub.unregister();
+  //
+  //    vm.stopPrank();
+  //    newRelayer = addrSet[addrIdx++];
+  //    vm.startPrank(newRelayer, newRelayer);
+  //
+  //    // send 200 ether
+  //    vm.expectRevert(bytes("deposit value is not exactly the same"));
+  //    relayerHub.register{value: 200 ether}();
+  //
+  //    // send 10 ether
+  //    vm.expectRevert(bytes("deposit value is not exactly the same"));
+  //    relayerHub.register{value: 10 ether}();
+  //  }
+}
diff --git a/test/RelayerIncentivize.t.sol b/test/RelayerIncentivize.t.sol
new file mode 100644
index 00000000..64488091
--- /dev/null
+++ b/test/RelayerIncentivize.t.sol
@@ -0,0 +1,227 @@
+pragma solidity ^0.8.10;
+
+import "../lib/Deployer.sol";
+
+contract RelayerIncentivizeTest is Deployer {
+  event distributeCollectedReward(uint256 sequence, uint256 roundRewardForHeaderRelayer, uint256 roundRewardForTransferRelayer);
+  event paramChange(string key, bytes value);
+  event rewardToRelayer(address relayer, uint256 amount);
+
+  uint256 public roundSize;
+  uint256 public maximumWeight;
+  uint256 public gasPrice;
+
+  function setUp() public {
+    gasPrice = tx.gasprice;
+    roundSize = incentivize.ROUND_SIZE();
+    maximumWeight = incentivize.MAXIMUM_WEIGHT();
+
+    bytes memory key = "dynamicExtraIncentiveAmount";
+    bytes memory valueBytes = abi.encode(uint256(0));
+    updateParamByGovHub(key, valueBytes, address(incentivize));
+  }
+
+  function testHeaderRelay() public {
+    console2.log("round size is:", roundSize);
+    console2.log("max weight is:", maximumWeight);
+
+    uint256 roundSeq = incentivize.roundSequence();
+    vm.startPrank(address(crossChain));
+    while (incentivize.roundSequence() == roundSeq) {
+      incentivize.addReward(addrSet[99], address(crossChain), 1e16, false);
+    }
+    ++roundSeq;
+
+    address[] memory addrs = new address[](8);
+    uint256[] memory bals = new uint256[](8);
+    for (uint256 i; i < 8; ++i) {
+      addrs[i] = addrSet[addrIdx++];
+      vm.label(addrs[i], vm.toString(i));
+      bals[i] = addrs[i].balance;
+    }
+
+    for (uint256 i; i < 1; ++i) {
+      incentivize.addReward(addrs[0], address(crossChain), 1e16, false);
+    }
+    for (uint256 i; i < 2; ++i) {
+      incentivize.addReward(addrs[1], address(crossChain), 1e16, false);
+    }
+    for (uint256 i; i < 3; ++i) {
+      incentivize.addReward(addrs[2], address(crossChain), 1e16, false);
+    }
+    for (uint256 i; i < 4; ++i) {
+      incentivize.addReward(addrs[3], address(crossChain), 1e16, false);
+    }
+    for (uint256 i; i < 5; ++i) {
+      incentivize.addReward(addrs[4], address(crossChain), 1e16, false);
+    }
+    for (uint256 i; i < 40; ++i) {
+      incentivize.addReward(addrs[5], address(crossChain), 1e16, false);
+    }
+    for (uint256 i; i < 41; ++i) {
+      incentivize.addReward(addrs[6], address(crossChain), 1e16, false);
+    }
+    for (uint256 i; i < 4; ++i) {
+      incentivize.addReward(addrs[7], address(crossChain), 1e16, false);
+    }
+
+    assertEq(incentivize.roundSequence(), roundSeq + 1, "wrong sequence");
+
+    uint256[] memory rewards = new uint256[](8);
+    for (uint256 i; i < 8; ++i) {
+      incentivize.claimRelayerReward(addrs[i]);
+      rewards[i] = addrs[i].balance - bals[i];
+    }
+
+    assertGe(rewards[1], rewards[0], "wrong reward");
+    assertGe(rewards[2], rewards[1], "wrong reward");
+    assertGe(rewards[3], rewards[2], "wrong reward");
+    assertGe(rewards[4], rewards[3], "wrong reward");
+    assertGe(rewards[5], rewards[4], "wrong reward");
+    assertEq(rewards[6], rewards[5], "wrong reward");
+    assertEq(rewards[7], rewards[3], "wrong reward");
+
+    vm.stopPrank();
+  }
+
+  function testPackageRelay() public {
+    uint256 roundSeq = incentivize.roundSequence();
+    vm.startPrank(address(crossChain));
+    while (incentivize.roundSequence() == roundSeq) {
+      incentivize.addReward(addrSet[99], address(crossChain), 1e16, false);
+    }
+    ++roundSeq;
+
+    address[] memory addrs = new address[](8);
+    uint256[] memory bals = new uint256[](8);
+    uint256[] memory txFees = new uint256[](8);
+    for (uint256 i; i < 8; ++i) {
+      addrs[i] = addrSet[addrIdx++];
+      vm.label(addrs[i], vm.toString(i));
+      bals[i] = addrs[i].balance;
+    }
+
+    uint256 gas;
+    gas = gasleft();
+    for (uint256 i; i < 1; ++i) {
+      incentivize.addReward(address(crossChain), addrs[0], 1e16, false);
+    }
+    txFees[0] = gasPrice * (gas - gasleft());
+    gas = gasleft();
+    for (uint256 i; i < 2; ++i) {
+      incentivize.addReward(address(crossChain), addrs[1], 1e16, false);
+    }
+    txFees[1] = gasPrice * (gas - gasleft());
+    gas = gasleft();
+    for (uint256 i; i < 3; ++i) {
+      incentivize.addReward(address(crossChain), addrs[2], 1e16, false);
+    }
+    txFees[2] = gasPrice * (gas - gasleft());
+    gas = gasleft();
+    for (uint256 i; i < 4; ++i) {
+      incentivize.addReward(address(crossChain), addrs[3], 1e16, false);
+    }
+    txFees[3] = gasPrice * (gas - gasleft());
+    gas = gasleft();
+    for (uint256 i; i < 5; ++i) {
+      incentivize.addReward(address(crossChain), addrs[4], 1e16, false);
+    }
+    txFees[4] = gasPrice * (gas - gasleft());
+    gas = gasleft();
+    for (uint256 i; i < 40; ++i) {
+      incentivize.addReward(address(crossChain), addrs[5], 1e16, false);
+    }
+    txFees[5] = gasPrice * (gas - gasleft());
+    gas = gasleft();
+    for (uint256 i; i < 41; ++i) {
+      incentivize.addReward(address(crossChain), addrs[6], 1e16, false);
+    }
+    txFees[6] = gasPrice * (gas - gasleft());
+    gas = gasleft();
+    for (uint256 i; i < 4; ++i) {
+      incentivize.addReward(address(crossChain), addrs[7], 1e16, false);
+    }
+    txFees[7] = gasPrice * (gas - gasleft());
+
+    assertEq(incentivize.roundSequence(), roundSeq + 1, "wrong sequence");
+
+    uint256[] memory rewards = new uint256[](8);
+    for (uint256 i; i < 8; ++i) {
+      incentivize.claimRelayerReward(addrs[i]);
+      rewards[i] = addrs[i].balance - bals[i] - txFees[i];
+    }
+
+    assertGe(rewards[1], rewards[0], "wrong reward");
+    assertGe(rewards[2], rewards[1], "wrong reward");
+    assertGe(rewards[3], rewards[2], "wrong reward");
+    assertGe(rewards[4], rewards[3], "wrong reward");
+    assertGe(rewards[5], rewards[4], "wrong reward");
+    assertGe(rewards[5], rewards[6], "wrong reward");
+    assertGe(rewards[7], rewards[3], "wrong reward"); // get extra 1/80 of total reward
+    assertGe(rewards[5], rewards[7], "wrong reward"); // get extra 1/80 of total reward
+
+    vm.stopPrank();
+  }
+
+  function testNonPayableAddress() public {
+    uint256 roundSeq = incentivize.roundSequence();
+    vm.startPrank(address(crossChain));
+    while (incentivize.roundSequence() == roundSeq) {
+      incentivize.addReward(addrSet[99], address(crossChain), 1e16, false);
+    }
+    ++roundSeq;
+
+    uint256 balanceSystemReward = address(systemReward).balance;
+    for (uint256 i; i < 50; ++i) {
+      incentivize.addReward(address(lightClient), relayer, 1e16, false);
+    }
+    for (uint256 i; i < 49; ++i) {
+      incentivize.addReward(relayer, address(lightClient), 1e16, false);
+    }
+    incentivize.addReward(relayer, address(lightClient), 1e16, false);
+
+    incentivize.claimRelayerReward(address(lightClient));
+    incentivize.claimRelayerReward(relayer);
+    uint256 newBalanceSystemReward = address(systemReward).balance;
+
+    assertEq(newBalanceSystemReward, balanceSystemReward + 506250000000000000, "wrong amount to systemReward contract");
+    assertEq(incentivize.roundSequence(), roundSeq + 1, "wrong sequence");
+
+    vm.stopPrank();
+  }
+
+  function testDynamicExtraIncentive() public {
+    uint256 roundSeq = incentivize.roundSequence();
+    vm.startPrank(address(crossChain));
+    while (incentivize.roundSequence() == roundSeq) {
+      incentivize.addReward(addrSet[99], address(crossChain), 1e16, false);
+    }
+    ++roundSeq;
+    incentivize.claimRelayerReward(relayer);
+
+    uint256 balance = relayer.balance;
+    for (uint256 i; i < roundSize; ++i) {
+      incentivize.addReward(relayer, address(crossChain), 2e16, false);
+    }
+    assertEq(incentivize.roundSequence(), ++roundSeq, "wrong sequence");
+    incentivize.claimRelayerReward(relayer);
+    uint256 reward1 = relayer.balance - balance;
+    balance = relayer.balance;
+
+    vm.stopPrank();
+    bytes memory key = "dynamicExtraIncentiveAmount";
+    bytes memory valueBytes = abi.encode(uint256(1e16));
+    updateParamByGovHub(key, valueBytes, address(incentivize));
+
+    vm.startPrank(address(crossChain));
+    for (uint256 i; i < roundSize; ++i) {
+      incentivize.addReward(relayer, address(crossChain), 1e16, false);
+    }
+    assertEq(incentivize.roundSequence(), ++roundSeq, "wrong sequence");
+    incentivize.claimRelayerReward(relayer);
+    uint256 reward2 = relayer.balance - balance;
+    assertEq(reward2, reward1, "wrong reward");
+
+    vm.stopPrank();
+  }
+}
diff --git a/test/Slash.js b/test/Slash.js
deleted file mode 100644
index 340009fe..00000000
--- a/test/Slash.js
+++ /dev/null
@@ -1,350 +0,0 @@
-const SlashIndicator = artifacts.require("SlashIndicator");
-const BSCValidatorSet = artifacts.require("BSCValidatorSet");
-const Web3 = require('web3');
-const crypto = require('crypto');
-const RLP = require('rlp');
-const SystemReward = artifacts.require("SystemReward");
-const truffleAssert = require('truffle-assertions');
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-const STAKE_CHANNEL_ID = 0x08;
-
-contract('SlashIndicator', (accounts) => {
-  it('slash success', async () => {
-    const slashInstance = await SlashIndicator.deployed();
-    const accountOne = accounts[0];
-    
-    let validatorAccount = web3.eth.accounts.create();
-    for (let i =1; i<10; i++){
-      await slashInstance.slash(validatorAccount.address, { from: accountOne });
-      let res= (await slashInstance.getSlashIndicator.call(validatorAccount.address));
-      let count =res[1].toNumber();
-      assert.equal(count, i, "slash num is not correct");
-    }
-  });
-  
-  it('slash from no system account', async () => {
-    const slashInstance = await SlashIndicator.deployed();
-
-    const nonSystemAccount = accounts[1];
-    let validatorAccount = web3.eth.accounts.create();
-
-    // first slash
-    try{
-      await slashInstance.slash(validatorAccount.address, { from: nonSystemAccount });
-      assert.fail();
-    }catch (error) {
-      assert.ok(error.toString().includes("the message sender must be the block producer"), "slash from no system account should not be ok");
-    }
-  });
-
-  it('catch emit event', async () => {
-    const slashInstance = await SlashIndicator.deployed();
-
-    const accountOne = accounts[0];
-    let validatorAccount = web3.eth.accounts.create();
-    for (let i =1; i<50; i++){
-      let tx = await slashInstance.slash(validatorAccount.address, { from: accountOne });
-      truffleAssert.eventEmitted(tx, "validatorSlashed",(ev) => {
-        return ev.validator === validatorAccount.address;
-      });
-    }
-  });
-
-
-  it('isOperator works', async () => {
-    const slashInstance = await SlashIndicator.deployed();
-
-    const accountOne = accounts[0];
-    let validatorAccount1 = web3.eth.accounts.create();
-    let validatorAccount2 = web3.eth.accounts.create();
-
-    // slash afterward
-    for (let i =1; i<10; i++){
-      await slashInstance.slash(validatorAccount1.address, { from: accountOne });
-      let res= (await slashInstance.getSlashIndicator.call(validatorAccount1.address));
-      let count =res[1].toNumber();
-      assert.equal(count, i, "slash num is not correct for validator 1");
-
-      await slashInstance.slash(validatorAccount2.address, { from: accountOne });
-      res= (await slashInstance.getSlashIndicator.call(validatorAccount2.address));
-      count =res[1].toNumber();
-      assert.equal(count, i, "slash num is not correct for validator 2");
-    }
-  });
-
-  it('trigger misdemeanor', async () => {
-    const slashInstance = await SlashIndicator.deployed();
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    const systemRewardInstance = await SystemReward.deployed();
-
-    const systemAccount = accounts[0];
-    let validator = accounts[0];
-    let secondValidator = accounts[1];
-    let thirdValidator = accounts[2];
-
-    await validatorSetInstance.deposit(validator, {from: systemAccount, value: 1e18 });
-    await systemRewardInstance.addOperator(validatorSetInstance.address, {from: systemAccount});
-
-    let amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString())
-
-    for (let i =1; i<=50; i++){
-      await slashInstance.slash(validator, { from: systemAccount });
-    }
-
-    amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toNumber(),0);
-
-    let packageBytes = validatorUpdateRlpEncode([validator,secondValidator,thirdValidator],
-        [validator,secondValidator,thirdValidator],[validator,secondValidator,thirdValidator]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: accounts[8]});
-
-    await validatorSetInstance.deposit(validator, {from: systemAccount, value: 2e18 });
-    amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toString(),web3.utils.toBN(2e18).toString())
-    for (let i =1; i<=4; i++){
-      await slashInstance.slash(validator, { from: systemAccount });
-    }
-    let res= (await slashInstance.getSlashIndicator.call(validator));
-    assert.equal(res[1].toNumber(),50);
-    amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toNumber(),0);
-    amount = await validatorSetInstance.getIncoming.call(secondValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString())
-    amount = await validatorSetInstance.getIncoming.call(thirdValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString())
-    
-
-
-    await validatorSetInstance.deposit(secondValidator, {from: systemAccount, value: 1e18 });
-    amount = await validatorSetInstance.getIncoming.call(secondValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(2e18).toString())
-    for (let i =1; i<=50; i++){
-      await slashInstance.slash(secondValidator, { from: systemAccount });
-    }
-    res= (await slashInstance.getSlashIndicator.call(secondValidator));
-    assert.equal(res[1].toNumber(),50);
-    amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString())
-    amount = await validatorSetInstance.getIncoming.call(secondValidator);
-    assert.equal(amount.toNumber(),0);
-    amount = await validatorSetInstance.getIncoming.call(thirdValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(2e18).toString())
-
-    for (let i =1; i<=50; i++){
-      await slashInstance.slash(thirdValidator, { from: systemAccount });
-    }
-    res= (await slashInstance.getSlashIndicator.call(thirdValidator));
-    assert.equal(res[1].toNumber(),50);
-    amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toString(),web3.utils.toBN(2e18).toString())
-    amount = await validatorSetInstance.getIncoming.call(secondValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString())
-    amount = await validatorSetInstance.getIncoming.call(thirdValidator);
-    assert.equal(amount.toNumber(),0);
-
-  });
-
-});
-
-contract('felony SlashIndicator', (accounts) => {
-  it('trigger felony ', async () => {
-    const slashInstance = await SlashIndicator.deployed();
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-
-    const systemAccount = accounts[0];
-    let validator = accounts[0];
-    let secondValidator = accounts[1];
-    let thirdValidator = accounts[2];
-
-    let packageBytes = validatorUpdateRlpEncode([validator,secondValidator,thirdValidator],
-        [validator,secondValidator,thirdValidator],[validator,secondValidator,thirdValidator]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: accounts[8]});
-
-    await validatorSetInstance.deposit(validator, {from: systemAccount, value: 2e18 });
-    amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toString(),web3.utils.toBN(2e18).toString())
-    for (let i =1; i<=150; i++){
-      await slashInstance.slash(validator, { from: systemAccount });
-    }
-
-    let res= (await slashInstance.getSlashIndicator.call(validator));
-    assert.equal(res[1].toNumber(),0);
-    amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toNumber(),0);
-    amount = await validatorSetInstance.getIncoming.call(secondValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString());
-    amount = await validatorSetInstance.getIncoming.call(thirdValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString());
-    let consensusAddres = await validatorSetInstance.getValidators.call();
-    assert.equal(consensusAddres.length,2);
-    assert.equal(consensusAddres[0],thirdValidator);
-    assert.equal(consensusAddres[1],secondValidator);
-
-    packageBytes = validatorUpdateRlpEncode([validator,secondValidator,thirdValidator],
-        [validator,secondValidator,thirdValidator],[validator,secondValidator,thirdValidator]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: accounts[8]});
-
-    await validatorSetInstance.deposit(secondValidator, {from: systemAccount, value: 2e18 });
-    amount = await validatorSetInstance.getIncoming.call(secondValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(2e18).toString())
-    for (let i =1; i<=150; i++){
-      await slashInstance.slash(secondValidator, { from: systemAccount });
-    }
-
-    res= (await slashInstance.getSlashIndicator.call(secondValidator));
-    assert.equal(res[1].toNumber(),0);
-    amount = await validatorSetInstance.getIncoming.call(secondValidator);
-    assert.equal(amount.toNumber(),0);
-    amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString());
-    amount = await validatorSetInstance.getIncoming.call(thirdValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString());
-    consensusAddres = await validatorSetInstance.getValidators.call();
-    assert.equal(consensusAddres.length,2);
-    assert.equal(consensusAddres[0],validator);
-    assert.equal(consensusAddres[1],thirdValidator);
-
-    packageBytes = validatorUpdateRlpEncode([validator,secondValidator,thirdValidator],
-        [validator,secondValidator,thirdValidator],[validator,secondValidator,thirdValidator]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: accounts[8]});
-
-    await validatorSetInstance.deposit(thirdValidator, {from: systemAccount, value: 2e18 });
-    amount = await validatorSetInstance.getIncoming.call(thirdValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(2e18).toString())
-    for (let i =1; i<=150; i++){
-      await slashInstance.slash(thirdValidator, { from: systemAccount });
-    }
-
-    res= (await slashInstance.getSlashIndicator.call(thirdValidator));
-    assert.equal(res[1].toNumber(),0);
-    amount = await validatorSetInstance.getIncoming.call(thirdValidator);
-    assert.equal(amount.toNumber(),0);
-    amount = await validatorSetInstance.getIncoming.call(validator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString());
-    amount = await validatorSetInstance.getIncoming.call(secondValidator);
-    assert.equal(amount.toString(),web3.utils.toBN(1e18).toString());
-    consensusAddres = await validatorSetInstance.getValidators.call();
-    assert.equal(consensusAddres.length,2);
-    assert.equal(consensusAddres[0],validator);
-    assert.equal(consensusAddres[1],secondValidator);
-
-  });
-});
-
-contract('Clean SlashIndicator', (accounts) => {
-  it('test slash clean', async () => {
-    const slashInstance = await SlashIndicator.deployed();
-    const validatorSetInstance = await BSCValidatorSet.deployed();
-    let newValidator = web3.eth.accounts.create();
-    let relayerAccount = accounts[8];
-    const accountOne = accounts[0];
-
-    // case 1: all clean.
-    let validators = [];
-    for(let i =0;i <20; i++){
-      validators.push(web3.eth.accounts.create().address);
-    }
-    for(let i =0;i <20;i++){
-      await slashInstance.slash(validators[i], { from: accountOne });
-    }
-    // doclean
-    let packageBytes = validatorUpdateRlpEncode([newValidator.address],
-        [newValidator.address],[newValidator.address]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-
-    let res= (await slashInstance.getSlashValidators.call());
-    assert.equal(res.length, 0);
-
-    for(let i =0;i <20;i++){
-      let res = await slashInstance.getSlashIndicator.call(validators[i]);
-      let count =res[1].toNumber();
-      let height = res[0].toNumber();
-      assert.equal(count, 0);
-      assert.equal(height, 0);
-    }
-
-    // case 2: all stay.
-    for(let i =0;i <20;i++){
-      for(let j=0;j<5;j++){
-        await slashInstance.slash(validators[i], { from: accountOne });
-      }
-    }
-    // doclean
-    packageBytes = validatorUpdateRlpEncode([newValidator.address],
-        [newValidator.address],[newValidator.address]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-    res= (await slashInstance.getSlashValidators.call());
-    assert.equal(res.length, 20);
-    for(let i =0;i <20;i++){
-      let res = await slashInstance.getSlashIndicator.call(validators[i]);
-      let count =res[1].toNumber();
-      assert.equal(count, 1);
-    }
-
-    // case 3: partial stay.
-    for(let i =0;i <10;i++){
-      for(let j=0;j<5;j++){
-        await slashInstance.slash(validators[2*i], { from: accountOne });
-      }
-      await slashInstance.slash(validators[2*i+1], { from: accountOne });
-    }
-    // doclean
-    packageBytes = validatorUpdateRlpEncode([newValidator.address],
-        [newValidator.address],[newValidator.address]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-    res= (await slashInstance.getSlashValidators.call());
-    assert.equal(res.length, 10);
-    for(let i =0;i <20;i++){
-      let res = await slashInstance.getSlashIndicator.call(validators[i]);
-      let count =res[1].toNumber();
-      if(i%2==0){
-        assert.equal(count, 2);
-      }else{
-        assert.equal(count, 0);
-      }
-    }
-
-    // case 4: partial stay.
-    for(let i =0;i <10;i++){
-      for(let j=0;j<5;j++){
-        await slashInstance.slash(validators[2*i+1], { from: accountOne });
-      }
-      await slashInstance.slash(validators[2*i], { from: accountOne });
-    }
-    // doclean
-    packageBytes = validatorUpdateRlpEncode([newValidator.address],
-        [newValidator.address],[newValidator.address]);
-    await validatorSetInstance.handleSynPackage(STAKE_CHANNEL_ID,packageBytes,{from: relayerAccount});
-    res= (await slashInstance.getSlashValidators.call());
-    assert.equal(res.length, 10);
-    for(let i =0;i <20;i++){
-      let res = await slashInstance.getSlashIndicator.call(validators[i]);
-      let count =res[1].toNumber();
-      if(i%2==0){
-        assert.equal(count, 0);
-      }else{
-        assert.equal(count, 1);
-      }
-    }
-
-  });
-});
-
-
-function validatorUpdateRlpEncode(consensusAddrList,feeAddrList, bscFeeAddrList) {
-  let pkg = [];
-  pkg.push(0x00);
-  let n = consensusAddrList.length;
-  let vals = [];
-  for(let i = 0;i<n;i++) {
-    vals.push([
-      consensusAddrList[i].toString(),
-      feeAddrList[i].toString(),
-      bscFeeAddrList[i].toString(),
-      0x0000000000000064,
-    ]);
-  }
-  pkg.push(vals);
-  return RLP.encode(pkg)
-}
\ No newline at end of file
diff --git a/test/SlashIndicator.t.sol b/test/SlashIndicator.t.sol
new file mode 100644
index 00000000..56ba9e92
--- /dev/null
+++ b/test/SlashIndicator.t.sol
@@ -0,0 +1,306 @@
+pragma solidity ^0.8.10;
+
+import "../lib/Deployer.sol";
+
+contract SlashIndicatorTest is Deployer {
+  event validatorSlashed(address indexed validator);
+  event indicatorCleaned();
+  event paramChange(string key, bytes value);
+
+  address public coinbase;
+  address[] public validators;
+
+  function setUp() public {
+    bytes memory slashCode = vm.getDeployedCode("SlashIndicator.sol");
+    vm.etch(address(slash), slashCode);
+
+    validators = validator.getValidators();
+
+    coinbase = block.coinbase;
+    vm.deal(coinbase, 100 ether);
+  }
+
+  function testGov() public {
+    bytes memory key = "misdemeanorThreshold";
+    bytes memory value = bytes(hex"0000000000000000000000000000000000000000000000000000000000000064"); // 100
+    updateParamByGovHub(key, value, address(slash));
+    assertEq(slash.misdemeanorThreshold(), 100);
+
+    key = "felonyThreshold";
+    value = bytes(hex"00000000000000000000000000000000000000000000000000000000000000c8"); // 200
+    updateParamByGovHub(key, value, address(slash));
+    assertEq(slash.felonyThreshold(), 200);
+
+    key = "finalitySlashRewardRatio";
+    value = bytes(hex"0000000000000000000000000000000000000000000000000000000000000032"); // 50
+    updateParamByGovHub(key, value, address(slash));
+    assertEq(slash.finalitySlashRewardRatio(), 50);
+  }
+
+  function testSlash() public {
+    address validator = validators[0];
+
+    vm.expectRevert(bytes("the message sender must be the block producer"));
+    slash.slash(validator);
+
+    vm.startPrank(coinbase);
+    (, uint256 origin) = slash.getSlashIndicator(validator);
+    for (uint256 i = 1; i < 10; ++i) {
+      vm.expectEmit(true, false, false, true, address(slash));
+      emit validatorSlashed(validator);
+      slash.slash(validator);
+      vm.roll(block.number + 1);
+      (, uint256 count) = slash.getSlashIndicator(validator);
+      assertEq(origin + i, count);
+    }
+    vm.stopPrank();
+  }
+
+  function testMaintenance() public {
+    vm.prank(validators[0]);
+    validator.enterMaintenance();
+
+    (, uint256 countBefore) = slash.getSlashIndicator(validators[0]);
+    vm.prank(coinbase);
+    slash.slash(validators[0]);
+    (, uint256 countAfter) = slash.getSlashIndicator(validators[0]);
+    assertEq(countAfter, countBefore);
+
+    vm.prank(validators[0]);
+    vm.expectRevert(bytes("can not enter Temporary Maintenance"));
+    validator.enterMaintenance();
+
+    // exit maintenance
+    vm.prank(validators[0]);
+    validator.exitMaintenance();
+    vm.roll(block.number + 1);
+    vm.prank(coinbase);
+    slash.slash(validators[0]);
+    (, countAfter) = slash.getSlashIndicator(validators[0]);
+    assertEq(countAfter, countBefore + 1);
+
+    vm.prank(validators[0]);
+    vm.expectRevert(bytes("can not enter Temporary Maintenance"));
+    validator.enterMaintenance();
+  }
+
+  function testMisdemeanor() public {
+    address[] memory vals = new address[](21);
+    for (uint256 i; i < vals.length; ++i) {
+      vals[i] = addrSet[addrIdx++];
+    }
+    vm.prank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, vals));
+
+    vm.startPrank(coinbase);
+    validator.deposit{value: 1 ether}(vals[0]);
+    assertEq(9e17, validator.getIncoming(vals[0]));
+
+    for (uint256 i; i < 50; ++i) {
+      vm.roll(block.number + 1);
+      slash.slash(vals[0]);
+    }
+    (, uint256 count) = slash.getSlashIndicator(vals[0]);
+    assertEq(50, count);
+    assertEq(0, validator.getIncoming(vals[0]));
+
+    // enter maintenance, cannot be slashed
+    vm.roll(block.number + 1);
+    slash.slash(vals[0]);
+    (, count) = slash.getSlashIndicator(vals[0]);
+    assertEq(50, count);
+    vm.stopPrank();
+
+    address[] memory newVals = new address[](3);
+    for (uint256 i; i < newVals.length; ++i) {
+      newVals[i] = vals[i];
+    }
+    vm.prank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newVals));
+
+    vm.startPrank(coinbase);
+    validator.deposit{value: 2 ether}(newVals[0]);
+    assertEq(18e17, validator.getIncoming(newVals[0]));
+
+    for (uint256 i; i < 37; ++i) {
+      vm.roll(block.number + 1);
+      slash.slash(newVals[0]);
+    }
+    (, count) = slash.getSlashIndicator(newVals[0]);
+    assertEq(50, count);
+    assertEq(0, validator.getIncoming(newVals[0]));
+    assertEq(9e17, validator.getIncoming(newVals[1]));
+    assertEq(9e17, validator.getIncoming(newVals[2]));
+
+    validator.deposit{value: 1 ether}(newVals[1]);
+    assertEq(18e17, validator.getIncoming(newVals[1]));
+    for (uint256 i; i < 50; ++i) {
+      vm.roll(block.number + 1);
+      slash.slash(newVals[1]);
+    }
+    assertEq(9e17, validator.getIncoming(newVals[0]));
+    assertEq(0, validator.getIncoming(newVals[1]));
+    assertEq(18e17, validator.getIncoming(newVals[2]));
+
+    assertEq(18e17, validator.getIncoming(newVals[2]));
+    for (uint256 i; i < 50; ++i) {
+      vm.roll(block.number + 1);
+      slash.slash(newVals[2]);
+    }
+    assertEq(18e17, validator.getIncoming(newVals[0]));
+    assertEq(9e17, validator.getIncoming(newVals[1]));
+    assertEq(0, validator.getIncoming(newVals[2]));
+    vm.stopPrank();
+  }
+
+  function testFelony() public {
+    address[] memory vals = new address[](3);
+    for (uint256 i; i < vals.length; ++i) {
+      vals[i] = addrSet[addrIdx++];
+    }
+    vm.prank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, vals));
+
+    vm.startPrank(coinbase);
+    validator.deposit{value: 1 ether}(vals[0]);
+    assertEq(9e17, validator.getIncoming(vals[0]));
+
+    for (uint256 i; i < 50; ++i) {
+      vm.roll(block.number + 1);
+      slash.slash(vals[0]);
+    }
+    (, uint256 count) = slash.getSlashIndicator(vals[0]);
+    assertEq(50, count);
+    assertEq(0, validator.getIncoming(vals[0]));
+    vm.stopPrank();
+
+    vm.prank(vals[0]);
+    validator.exitMaintenance();
+
+    vm.startPrank(coinbase);
+    validator.deposit{value: 1 ether}(vals[0]);
+    for (uint256 i; i < 100; ++i) {
+      vm.roll(block.number + 1);
+      slash.slash(vals[0]);
+    }
+    (, count) = slash.getSlashIndicator(vals[0]);
+    assertEq(0, count);
+    assertEq(0, validator.getIncoming(vals[0]));
+    assertEq(9e17, validator.getIncoming(vals[1]));
+    assertEq(9e17, validator.getIncoming(vals[2]));
+
+    vals = validator.getValidators();
+    assertEq(2, vals.length);
+    vm.stopPrank();
+  }
+
+  function testClean() public {
+    // case 1: all clean.
+    address[] memory vals = new address[](20);
+    for (uint256 i; i < vals.length; ++i) {
+      vals[i] = addrSet[addrIdx++];
+    }
+    vm.prank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, vals));
+
+    vm.startPrank(coinbase);
+    for (uint256 i; i < vals.length; ++i) {
+      vm.roll(block.number + 1);
+      slash.slash(vals[i]);
+    }
+    vm.stopPrank();
+
+    // do clean
+    vm.prank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, vals));
+
+    uint256 count;
+    for (uint256 i; i < vals.length; ++i) {
+      (, count) = slash.getSlashIndicator(vals[i]);
+      assertEq(0, count);
+    }
+
+    // case 2: all stay.
+    // felonyThreshold/DECREASE_RATE = 37
+    vm.startPrank(coinbase);
+    for (uint256 i; i < vals.length; ++i) {
+      for (uint256 j; j < 38; ++j) {
+        vm.roll(block.number + 1);
+        slash.slash(vals[i]);
+      }
+    }
+    vm.stopPrank();
+
+    // do clean
+    vm.prank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, vals));
+
+    for (uint256 i; i < vals.length; ++i) {
+      (, count) = slash.getSlashIndicator(vals[i]);
+      assertEq(1, count);
+    }
+
+    // case 3: partial stay.
+    vm.startPrank(coinbase);
+    for (uint256 i; i < 10; ++i) {
+      for (uint256 j; j < 38; ++j) {
+        vm.roll(block.number + 1);
+        slash.slash(vals[2 * i]);
+      }
+      vm.roll(block.number + 1);
+      slash.slash(vals[2 * i + 1]);
+    }
+    vm.stopPrank();
+
+    // do clean
+    vm.prank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, vals));
+
+    for (uint256 i; i < 10; ++i) {
+      (, count) = slash.getSlashIndicator(vals[i]);
+      if (i % 2 == 0) {
+        assertEq(2, count);
+      } else {
+        assertEq(0, count);
+      }
+    }
+  }
+
+  //  function testFinality() public {
+  //    address[] memory vals = new address[](20);
+  //    bytes[] memory voteAddrs = new bytes[](20);
+  //    for (uint256 i; i < vals.length; ++i) {
+  //      vals[i] = addrSet[addrIdx++];
+  //      voteAddrs[i] = abi.encodePacked(vals[i]);
+  //    }
+  //    vm.prank(address(crossChain));
+  //    validator.handleSynPackage(STAKING_CHANNELID, encodeNewValidatorSetUpdatePack(0x00, vals, voteAddrs));
+  //
+  //    // case1: valid finality evidence: same target block
+  //    uint256 srcNumA = block.number - 20;
+  //    uint256 tarNumA = block.number - 10;
+  //    uint256 srcNumB = block.number - 15;
+  //    uint256 tarNumB = tarNumA;
+  //    SlashIndicator.VoteData memory voteA;
+  //    voteA.srcNum = srcNumA;
+  //    voteA.srcHash = blockhash(srcNumA);
+  //    voteA.tarNum = tarNumA;
+  //    voteA.tarHash = blockhash(tarNumA);
+  //    voteA.sig = abi.encode("sigA");
+  //
+  //    SlashIndicator.VoteData memory voteB;
+  //    voteB.srcNum = srcNumB;
+  //    voteB.srcHash = blockhash(srcNumB);
+  //    voteB.tarNum = tarNumB;
+  //    voteB.tarHash = blockhash(tarNumB);
+  //    voteB.sig = abi.encode("sigB");
+  //
+  //    SlashIndicator.FinalityEvidence memory evidence;
+  //    evidence.voteA = voteA;
+  //    evidence.voteB = voteB;
+  //    evidence.voteAddr = voteAddrs[0];
+  //
+  //    vm.prank(relayer);
+  //    slash.submitFinalityViolationEvidence(evidence);
+  //  }
+}
diff --git a/test/Staking.t.sol b/test/Staking.t.sol
new file mode 100644
index 00000000..3a2d1b9e
--- /dev/null
+++ b/test/Staking.t.sol
@@ -0,0 +1,458 @@
+pragma solidity ^0.8.10;
+
+import "../lib/Deployer.sol";
+
+contract StakingTest is Deployer {
+  using RLPEncode for *;
+
+  event delegateSubmitted(address indexed delegator, address indexed validator, uint256 amount, uint256 oracleRelayerFee);
+  event undelegateSubmitted(address indexed delegator, address indexed validator, uint256 amount, uint256 oracleRelayerFee);
+  event redelegateSubmitted(address indexed delegator, address indexed validatorSrc, address indexed validatorDst, uint256 amount, uint256 oracleRelayerFee);
+  event rewardReceived(address indexed delegator, uint256 amount);
+  event rewardClaimed(address indexed delegator, uint256 amount);
+  event undelegatedReceived(address indexed delegator, address indexed validator, uint256 amount);
+  event undelegatedClaimed(address indexed delegator, uint256 amount);
+  event delegateSuccess(address indexed delegator, address indexed validator, uint256 amount);
+  event undelegateSuccess(address indexed delegator, address indexed validator, uint256 amount);
+  event redelegateSuccess(address indexed delegator, address indexed valSrc, address indexed valDst, uint256 amount);
+  event delegateFailed(address indexed delegator, address indexed validator, uint256 amount, uint8 errCode);
+  event undelegateFailed(address indexed delegator, address indexed validator, uint256 amount, uint8 errCode);
+  event redelegateFailed(address indexed delegator, address indexed valSrc, address indexed valDst, uint256 amount, uint8 errCode);
+  event crashResponse(uint8 indexed eventCode);
+  event paramChange(string key, bytes valueBytes);
+
+  uint8 public constant EVENT_DELEGATE = 0x01;
+  uint8 public constant EVENT_UNDELEGATE = 0x02;
+  uint8 public constant EVENT_REDELEGATE = 0x03;
+  uint8 public constant EVENT_DISTRIBUTE_REWARD = 0x04;
+  uint8 public constant EVENT_DISTRIBUTE_UNDELEGATED = 0x05;
+
+  uint256 public relayFee;
+  uint256 public bSCRelayFee;
+  uint256 public minDelegation;
+  uint256 public decimal;
+
+  receive() external payable {}
+
+  function setUp() public {
+    bytes memory stakingCode = vm.getDeployedCode("Staking.sol");
+    vm.etch(STAKING_CONTRACT_ADDR, stakingCode);
+    staking = Staking(STAKING_CONTRACT_ADDR);
+    vm.label(address(staking), "Staking");
+
+    bytes memory tokenHubCode = vm.getDeployedCode("TokenHub.sol");
+    vm.etch(address(tokenHub), tokenHubCode);
+
+    bytes memory key = "addOrUpdateChannel";
+    bytes memory value = abi.encodePacked(CROSS_STAKE_CHANNELID, uint8(1), address(staking));
+    updateParamByGovHub(key, value, address(crossChain));
+
+    // to init the staking contract
+    staking.delegate{value: 101 ether}(addrSet[addrIdx], 100 ether);
+    relayFee = staking.getRelayerFee();
+    bSCRelayFee = staking.bSCRelayerFee();
+    minDelegation = staking.getMinDelegation();
+    decimal = staking.TEN_DECIMALS();
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = addrSet[addrIdx++].encodeAddress();
+    elements[2] = (1e20 / decimal).encodeUint();
+    bytes memory ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+  }
+
+  function testGov1(uint256 value) public {
+    vm.assume(value > relayFee);
+
+    bytes memory key = "minDelegation";
+    bytes memory valueBytes = abi.encode(value);
+    vm.expectEmit(false, false, false, true, address(staking));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(staking));
+    assertEq(value, staking.minDelegation());
+  }
+
+  function testGov2(uint32 value) public {
+    vm.assume(uint256(value) * decimal > bSCRelayFee);
+
+    bytes memory key = "relayerFee";
+    bytes memory valueBytes = abi.encode(uint256(value) * decimal);
+    vm.expectEmit(false, false, false, true, address(staking));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(staking));
+    assertEq(uint256(value) * decimal, staking.relayerFee());
+  }
+
+  function testGov3(uint32 value) public {
+    vm.assume(value > 0);
+    vm.assume(uint256(value) * decimal < relayFee);
+
+    bytes memory key = "bSCRelayerFee";
+    bytes memory valueBytes = abi.encode(uint256(value) * decimal);
+    vm.expectEmit(false, false, false, true, address(staking));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(staking));
+    assertEq(uint256(value) * decimal, staking.bSCRelayerFee());
+  }
+
+  function testDelegate(uint16 amount) public {
+    vm.assume(amount > 0);
+    uint256 bigAmount = uint256(amount) * minDelegation;
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = addrSet[0].encodeAddress();
+    elements[2] = (bigAmount / decimal).encodeUint();
+
+    uint256 sendValue = minDelegation + relayFee + 1;
+    vm.expectRevert(bytes("precision loss in conversion"));
+    staking.delegate{value: sendValue}(addrSet[0], minDelegation);
+
+    sendValue = minDelegation + relayFee;
+    vm.expectRevert(bytes("precision loss in conversion"));
+    staking.delegate{value: sendValue}(addrSet[0], minDelegation + 1);
+
+    vm.expectRevert(bytes("invalid delegate amount"));
+    staking.delegate{value: sendValue}(addrSet[0], 1e18);
+
+    sendValue = minDelegation;
+    vm.expectRevert(bytes("not enough msg value"));
+    staking.delegate{value: sendValue}(addrSet[0], minDelegation);
+
+    sendValue = minDelegation + relayFee / 2;
+    vm.expectRevert(bytes("not enough msg value"));
+    staking.delegate{value: sendValue}(addrSet[0], minDelegation);
+
+    sendValue = bigAmount + relayFee;
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit delegateSubmitted(address(this), addrSet[0], bigAmount, relayFee - bSCRelayFee);
+    staking.delegate{value: sendValue}(addrSet[0], bigAmount);
+
+    uint256 delegatedBefore = staking.getDelegated(address(this), addrSet[0]);
+    bytes memory ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit delegateSuccess(address(this), addrSet[0], bigAmount);
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+    assertEq(bigAmount + delegatedBefore, staking.getDelegated(address(this), addrSet[0]));
+  }
+
+  function testUndelegate(uint16 amount) public {
+    vm.assume(amount > 0);
+    address validator = addrSet[addrIdx++];
+    uint256 bigAmount = uint256(amount) * minDelegation;
+    uint256 sendValue = relayFee + bigAmount + 2 * minDelegation + bSCRelayFee / 10;
+    staking.delegate{value: sendValue}(validator, bigAmount + 2 * minDelegation + bSCRelayFee / 10);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = validator.encodeAddress();
+    elements[2] = ((bigAmount + 2 * minDelegation + bSCRelayFee / 10) / decimal).encodeUint();
+    bytes memory ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+
+    vm.expectRevert(bytes("precision loss in conversion"));
+    staking.undelegate{value: relayFee}(validator, bigAmount + 1);
+
+    vm.expectRevert(bytes("precision loss in conversion"));
+    staking.undelegate{value: relayFee + 1}(validator, bigAmount);
+
+    vm.expectRevert(bytes("invalid amount"));
+    staking.undelegate{value: relayFee}(validator, minDelegation / 10);
+
+    vm.expectRevert(bytes("not enough relay fee"));
+    staking.undelegate{value: relayFee / 10}(validator, bigAmount);
+
+    vm.expectRevert(bytes("not enough funds"));
+    staking.undelegate{value: relayFee}(addrSet[addrIdx++], bigAmount);
+
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit undelegateSubmitted(address(this), validator, bigAmount, relayFee - bSCRelayFee);
+    staking.undelegate{value: relayFee}(validator, bigAmount);
+
+    elements[2] = (bigAmount / decimal).encodeUint();
+    ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_UNDELEGATE, elements.encodeList()));
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit undelegateSuccess(address(this), validator, bigAmount);
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+
+    vm.expectRevert(bytes("pending undelegation exist"));
+    staking.undelegate{value: relayFee}(validator, minDelegation);
+
+    skip(8 days);
+    vm.expectRevert(bytes("insufficient balance after undelegate"));
+    staking.undelegate{value: relayFee}(validator, 2 * minDelegation);
+
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit undelegateSubmitted(address(this), validator, minDelegation, relayFee - bSCRelayFee);
+    staking.undelegate{value: relayFee}(validator, minDelegation);
+  }
+
+  function testRedelegate(uint16 amount) public {
+    vm.assume(amount > 0);
+
+    address validator = addrSet[addrIdx++];
+    uint256 bigAmount = uint256(amount) * minDelegation;
+    uint256 sendValue = relayFee + bigAmount + 2 * minDelegation + bSCRelayFee / 10;
+    staking.delegate{value: sendValue}(validator, bigAmount + 2 * minDelegation + bSCRelayFee / 10);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = validator.encodeAddress();
+    elements[2] = ((bigAmount + 2 * minDelegation + bSCRelayFee / 10) / decimal).encodeUint();
+    bytes memory ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+
+    vm.expectRevert(bytes("precision loss in conversion"));
+    staking.redelegate{value: relayFee}(validator, addrSet[addrIdx++], bigAmount + 1);
+
+    vm.expectRevert(bytes("precision loss in conversion"));
+    staking.redelegate{value: relayFee + 1}(validator, addrSet[addrIdx++], bigAmount);
+
+    vm.expectRevert(bytes("invalid redelegation"));
+    staking.redelegate{value: relayFee}(validator, validator, bigAmount);
+
+    vm.expectRevert(bytes("invalid amount"));
+    staking.redelegate{value: relayFee}(validator, addrSet[addrIdx++], minDelegation / 10);
+
+    console2.log(staking.getDelegated(address(this), validator));
+    vm.expectRevert(bytes("not enough funds"));
+    staking.redelegate{value: relayFee}(addrSet[addrIdx++], validator, bigAmount);
+
+    vm.expectRevert(bytes("not enough relay fee"));
+    staking.redelegate{value: relayFee / 10}(validator, addrSet[addrIdx++], bigAmount);
+
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit redelegateSubmitted(address(this), validator, addrSet[addrIdx], bigAmount, relayFee - bSCRelayFee);
+    staking.redelegate{value: relayFee}(validator, addrSet[addrIdx], bigAmount);
+
+    bytes[] memory elements1 = new bytes[](4);
+    elements1[0] = address(this).encodeAddress();
+    elements1[1] = validator.encodeAddress();
+    elements1[2] = addrSet[addrIdx].encodeAddress();
+    elements1[3] = (bigAmount / decimal).encodeUint();
+    ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_REDELEGATE, elements1.encodeList()));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+
+    vm.expectRevert(bytes("pending redelegation exist"));
+    staking.redelegate{value: relayFee}(validator, addrSet[addrIdx], bigAmount);
+
+    skip(8 days);
+    vm.expectRevert(bytes("insufficient balance after redelegate"));
+    staking.redelegate{value: relayFee}(validator, addrSet[addrIdx], 2 * minDelegation);
+
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit redelegateSubmitted(address(this), validator, addrSet[addrIdx], minDelegation, relayFee - bSCRelayFee);
+    staking.redelegate{value: relayFee}(validator, addrSet[addrIdx], minDelegation);
+  }
+
+  function testHandleRewardSynPackage(uint256 reward) public {
+    vm.assume(reward > 0);
+    vm.assume(reward <= 1e18);
+
+    uint256 sendValue = minDelegation + relayFee;
+    staking.delegate{value: sendValue}(addrSet[0], minDelegation);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = EVENT_DISTRIBUTE_REWARD.encodeUint();
+    elements[1] = address(this).encodeAddress();
+    elements[2] = reward.encodeUint();
+
+    vm.expectEmit(true, false, false, true, address(staking));
+    emit rewardReceived(address(this), reward);
+    vm.startPrank(address(crossChain));
+    staking.handleSynPackage(CROSS_STAKE_CHANNELID, elements.encodeList());
+    vm.stopPrank();
+    assertEq(reward, staking.getDistributedReward(address(this)));
+
+    vm.expectEmit(true, false, false, true, address(staking));
+    emit rewardClaimed(address(this), reward);
+    staking.claimReward();
+    assertEq(0, staking.getDistributedReward(address(this)));
+  }
+
+  function testHandleUndelegatedSynPackage(uint16 amount) public {
+    vm.assume(amount > 0);
+    uint256 sendValue = amount * minDelegation + relayFee;
+    staking.delegate{value: sendValue}(addrSet[0], amount * minDelegation);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = addrSet[0].encodeAddress();
+    elements[2] = (amount * minDelegation / decimal).encodeUint();
+    bytes memory ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+
+    bytes[] memory elements1 = new bytes[](4);
+    elements1[0] = EVENT_DISTRIBUTE_UNDELEGATED.encodeUint();
+    elements1[1] = address(this).encodeAddress();
+    elements1[2] = addrSet[0].encodeAddress();
+    elements1[3] = (amount * minDelegation).encodeUint();
+
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit undelegatedReceived(address(this), addrSet[0], amount * minDelegation);
+    vm.startPrank(address(crossChain));
+    staking.handleSynPackage(CROSS_STAKE_CHANNELID, elements1.encodeList());
+    vm.stopPrank();
+    assertEq(amount * minDelegation, staking.getUndelegated(address(this)));
+
+    vm.expectEmit(true, false, false, true, address(staking));
+    emit undelegatedClaimed(address(this), amount * minDelegation);
+    staking.claimUndelegated();
+    assertEq(0, staking.getUndelegated(address(this)));
+  }
+
+  function testHandleDelegateAckPackage() public {
+    //    vm.assume(amount > 0);
+    uint16 amount = 5;
+    uint256 sendValue = amount * minDelegation + relayFee;
+    staking.delegate{value: sendValue}(addrSet[0], amount * minDelegation);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = addrSet[0].encodeAddress();
+    elements[2] = (amount * minDelegation / decimal).encodeUint();
+
+    bytes memory ackPack = _genAckPack(uint8(0), uint8(1), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit delegateFailed(address(this), addrSet[0], amount * minDelegation, uint8(1));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+  }
+
+  function testHandleUndelegateAckPackage(uint16 amount) public {
+    vm.assume(amount > 0);
+    uint256 sendValue = amount * minDelegation + relayFee;
+    staking.delegate{value: sendValue}(addrSet[0], amount * minDelegation);
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = addrSet[0].encodeAddress();
+    elements[2] = (amount * minDelegation / decimal).encodeUint();
+    bytes memory ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+    staking.undelegate{value: relayFee}(addrSet[0], amount * minDelegation);
+
+    ackPack = _genAckPack(uint8(0), uint8(1), _RLPEncode(EVENT_UNDELEGATE, elements.encodeList()));
+    vm.expectEmit(true, true, false, true, address(staking));
+    emit undelegateFailed(address(this), addrSet[0], amount * minDelegation, uint8(1));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+  }
+
+  function testHandleRedelegateAckPackage(uint16 amount) public {
+    vm.assume(amount > 0);
+    uint256 sendValue = amount * minDelegation + relayFee;
+    staking.delegate{value: sendValue}(addrSet[0], amount * minDelegation);
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = addrSet[0].encodeAddress();
+    elements[2] = (amount * minDelegation / decimal).encodeUint();
+    bytes memory ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+    staking.redelegate{value: relayFee}(addrSet[0], addrSet[1], amount * minDelegation);
+
+    bytes[] memory elements1 = new bytes[](4);
+    elements1[0] = address(this).encodeAddress();
+    elements1[1] = addrSet[0].encodeAddress();
+    elements1[2] = addrSet[1].encodeAddress();
+    elements1[3] = (amount * minDelegation / decimal).encodeUint();
+
+    ackPack = _genAckPack(uint8(0), uint8(1), _RLPEncode(EVENT_REDELEGATE, elements1.encodeList()));
+    vm.expectEmit(true, true, true, true, address(staking));
+    emit redelegateFailed(address(this), addrSet[0], addrSet[1], amount * minDelegation, uint8(1));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+  }
+
+  function testHandleDelegateFailAckPackage(uint16 amount) public {
+    vm.assume(amount > 0);
+    uint256 sendValue = amount * minDelegation + relayFee;
+    uint256 bcAmount = amount * minDelegation / decimal;
+    uint8 eventCode = EVENT_DELEGATE;
+    staking.delegate{value: sendValue}(addrSet[0], amount * minDelegation);
+
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = addrSet[0].encodeAddress();
+    elements[2] = (bcAmount).encodeUint();
+
+    vm.expectEmit(false, false, false, true, address(staking));
+    emit crashResponse(eventCode);
+    vm.startPrank(address(crossChain));
+    staking.handleFailAckPackage(CROSS_STAKE_CHANNELID, _RLPEncode(eventCode, elements.encodeList()));
+    vm.stopPrank();
+  }
+
+  function testHandleUndelegateFailAckPackage(uint16 amount) public {
+    vm.assume(amount > 0);
+    uint256 sendValue = amount * minDelegation + relayFee;
+    uint256 bcAmount = amount * minDelegation / decimal;
+    uint8 eventCode = EVENT_UNDELEGATE;
+    staking.delegate{value: sendValue}(addrSet[0], amount * minDelegation);
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = addrSet[0].encodeAddress();
+    elements[2] = (bcAmount).encodeUint();
+    bytes memory ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+    staking.undelegate{value: relayFee}(addrSet[0], amount * minDelegation);
+
+    vm.expectEmit(false, false, false, true, address(staking));
+    emit crashResponse(eventCode);
+    vm.startPrank(address(crossChain));
+    staking.handleFailAckPackage(CROSS_STAKE_CHANNELID, _RLPEncode(eventCode, elements.encodeList()));
+    vm.stopPrank();
+  }
+
+  function testHandleRedelegateFailAckPackage(uint16 amount) public {
+    vm.assume(amount > 0);
+    uint256 sendValue = amount * minDelegation + relayFee;
+    uint256 bcAmount = amount * minDelegation / decimal;
+    uint8 eventCode = EVENT_REDELEGATE;
+    staking.delegate{value: sendValue}(addrSet[0], amount * minDelegation);
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = address(this).encodeAddress();
+    elements[1] = addrSet[0].encodeAddress();
+    elements[2] = (bcAmount).encodeUint();
+    bytes memory ackPack = _genAckPack(uint8(1), uint8(0), _RLPEncode(EVENT_DELEGATE, elements.encodeList()));
+    vm.prank(address(crossChain));
+    staking.handleAckPackage(CROSS_STAKE_CHANNELID, ackPack);
+    staking.redelegate{value: relayFee}(addrSet[0], addrSet[1], amount * minDelegation);
+
+    bytes[] memory elements1 = new bytes[](4);
+    elements1[0] = address(this).encodeAddress();
+    elements1[1] = addrSet[0].encodeAddress();
+    elements1[2] = addrSet[1].encodeAddress();
+    elements1[3] = (bcAmount).encodeUint();
+
+    vm.expectEmit(false, false, false, true, address(staking));
+    emit crashResponse(eventCode);
+    vm.startPrank(address(crossChain));
+    staking.handleFailAckPackage(CROSS_STAKE_CHANNELID, _RLPEncode(eventCode, elements1.encodeList()));
+    vm.stopPrank();
+  }
+
+  function _RLPEncode(uint8 eventType, bytes memory msgBytes) internal pure returns (bytes memory output) {
+    bytes[] memory elements = new bytes[](2);
+    elements[0] = eventType.encodeUint();
+    elements[1] = msgBytes.encodeBytes();
+    output = elements.encodeList();
+  }
+
+  function _genAckPack(uint8 status, uint8 errCode, bytes memory paramBytes) internal pure returns (bytes memory output) {
+    bytes[] memory elements = new bytes[](3);
+    elements[0] = status.encodeUint();
+    elements[1] = errCode.encodeUint();
+    elements[2] = paramBytes.encodeBytes();
+    output = elements.encodeList();
+  }
+}
diff --git a/test/SystemReward.js b/test/SystemReward.js
deleted file mode 100644
index e922d864..00000000
--- a/test/SystemReward.js
+++ /dev/null
@@ -1,71 +0,0 @@
-const SystemReward = artifacts.require("SystemReward");
-const Web3 = require('web3');
-const truffleAssert = require('truffle-assertions');
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-
-contract('SystemReward', (accounts) => {
-  it('receive token success', async () => {
-    const systemRewardInstance = await SystemReward.deployed();
-    let tx = await systemRewardInstance.send(1e8, {from: accounts[3]});
-    let balance_wei = await web3.eth.getBalance(systemRewardInstance.address);
-    assert.equal(balance_wei, 1e8, "balance not equal");
-    truffleAssert.eventEmitted(tx, "receiveDeposit",(ev) => {
-      return ev.amount.toNumber() === 1e8 && ev.from === accounts[3];
-    });
-  });
-
-  it('isOperator works', async () => {
-    const systemRewardInstance = await SystemReward.deployed();
-    let res = await systemRewardInstance.isOperator.call(accounts[0]);
-    assert.ok(res, "accounts[0] should be operator");
-    res = await systemRewardInstance.isOperator.call(accounts[1]);
-    assert.ok(res, "accounts[1] should be operator");
-    res = await systemRewardInstance.isOperator.call(accounts[2]);
-    assert.ok(res, "accounts[2] should be operator");
-    res = await systemRewardInstance.isOperator.call(accounts[3]);
-    assert.ok(!res, "accounts[3] should not be operator");
-    res = await systemRewardInstance.isOperator.call(accounts[4]);
-    assert.ok(!res, "accounts[4] should not be operator");
-  });
-
-
-  it('claim reward success', async () => {
-    const systemRewardInstance = await SystemReward.deployed();
-    let newAccount = web3.eth.accounts.create();
-
-    await systemRewardInstance.send(1e8, {from: accounts[3]});
-    let tx = await systemRewardInstance.claimRewards(newAccount.address, 1e7, {from: accounts[0]})
-
-    truffleAssert.eventEmitted(tx, "rewardTo",(ev) => {
-      return ev.amount.toNumber() === 1e7 && ev.to === newAccount.address;
-    });
-
-    let balance_wei = await web3.eth.getBalance(newAccount.address);
-    assert.equal(balance_wei, 1e7, "balance not equal");
-  });
-
-  it('claim reward failed', async () => {
-    const systemRewardInstance = await SystemReward.deployed();
-    let newAccount = web3.eth.accounts.create();
-
-    await systemRewardInstance.send(1e8, {from: accounts[3]});
-    try{
-      await systemRewardInstance.claimRewards(newAccount.address, 1e7, {from: accounts[3]})
-      assert.fail();
-    }catch (error) {
-      assert.ok(error.toString().includes("only operator is allowed to call the method"));
-    }
-  });
-});
-
-contract('SystemReward', (accounts) => {
-  
-  it('claim empty reward', async () => {
-    const systemRewardInstance = await SystemReward.deployed();
-    let newAccount = web3.eth.accounts.create();
-    let tx = await systemRewardInstance.claimRewards(newAccount.address, 1e7, {from: accounts[0]})
-    truffleAssert.eventEmitted(tx, "rewardEmpty");
-    let balance_wei = await web3.eth.getBalance(newAccount.address);
-    assert.equal(balance_wei, 0, "balance not equal");
-  });
-});
diff --git a/test/SystemReward.t.sol b/test/SystemReward.t.sol
new file mode 100644
index 00000000..8a8c6164
--- /dev/null
+++ b/test/SystemReward.t.sol
@@ -0,0 +1,58 @@
+pragma solidity ^0.8.10;
+
+import "../lib/Deployer.sol";
+
+contract SystemRewardTest is Deployer {
+  event paramChange(string key, bytes value);
+  event rewardTo(address indexed to, uint256 amount);
+  event rewardEmpty();
+
+  function setUp() public {
+    bytes memory rewardCode = vm.getDeployedCode("SystemReward.sol");
+    vm.etch(address(systemReward), rewardCode);
+  }
+
+  function testReceive(uint256 amount) public {
+    vm.assume(amount < 1e20);
+    uint256 balance = address(systemReward).balance;
+
+    payable(address(systemReward)).transfer(amount);
+    assertEq(address(systemReward).balance, amount + balance);
+  }
+
+  function testOperator() public {
+    assertTrue(systemReward.isOperator(LIGHT_CLIENT_ADDR), "light client should be operator");
+    assertTrue(systemReward.isOperator(INCENTIVIZE_ADDR), "relayer incentivize should be operator");
+    assertTrue(!systemReward.isOperator(addrSet[0]), "address in addrSet should not be operator");
+    assertTrue(!systemReward.isOperator(addrSet[49]), "address in addrSet should not be operator");
+    assertTrue(!systemReward.isOperator(addrSet[99]), "address in addrSet should not be operator");
+  }
+
+  function testClaimReward() public {
+    address newAccount = addrSet[addrIdx++];
+
+    payable(address(systemReward)).transfer(1 ether);
+    vm.expectEmit(true, false, false, true, address(systemReward));
+    emit rewardTo(newAccount, 1 ether);
+    vm.prank(LIGHT_CLIENT_ADDR);
+    systemReward.claimRewards(newAccount, 1 ether);
+
+    vm.expectRevert("only operator is allowed to call the method");
+    systemReward.claimRewards(newAccount, 1 ether);
+
+    vm.deal(address(systemReward), 0);
+    vm.expectEmit(false, false, false, false, address(systemReward));
+    emit rewardEmpty();
+    vm.prank(LIGHT_CLIENT_ADDR);
+    systemReward.claimRewards(newAccount, 1 ether);
+  }
+
+  function testGov() public {
+    bytes memory key = "updateOperator";
+    bytes memory valueBytes = abi.encodePacked(address(validator));
+    vm.expectEmit(false, false, false, true, address(systemReward));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(systemReward));
+    assertTrue(systemReward.isOperator(address(validator)));
+  }
+}
diff --git a/test/TendermintLightClient.t.sol b/test/TendermintLightClient.t.sol
new file mode 100644
index 00000000..d27b43d4
--- /dev/null
+++ b/test/TendermintLightClient.t.sol
@@ -0,0 +1,21 @@
+pragma solidity ^0.8.10;
+
+import "../lib/Deployer.sol";
+
+contract TendermintLightClientTest is Deployer {
+  event relayerRegister(address _relayer);
+  event relayerUnRegister(address _relayer);
+  event paramChange(string key, bytes value);
+
+  uint256 public requiredDeposit;
+  uint256 public dues;
+
+  function setUp() public {}
+
+  function testInitConsensusState() public {
+    assertEq(lightClient.initialHeight(), 110186855);
+    assertEq(lightClient.chainID(), bytes32("Binance-Chain-Tigris"));
+    assertTrue(lightClient.isHeaderSynced(uint64(255787329)));
+    assertTrue(!lightClient.isHeaderSynced(uint64(255787330)));
+  }
+}
diff --git a/test/TestRelayerIncentivize.js b/test/TestRelayerIncentivize.js
deleted file mode 100644
index 426d787d..00000000
--- a/test/TestRelayerIncentivize.js
+++ /dev/null
@@ -1,364 +0,0 @@
-const RelayerIncentivize = artifacts.require("RelayerIncentivize");
-const SystemReward = artifacts.require("SystemReward");
-const TendermintLightClient = artifacts.require("TendermintLightClient");
-const MockLightClient = artifacts.require("mock/MockLightClient");
-const TokenHub = artifacts.require("TokenHub");
-const TokenManager = artifacts.require("TokenManager");
-const CrossChain = artifacts.require("CrossChain");
-const ABCToken = artifacts.require("ABCToken");
-const DEFToken = artifacts.require("DEFToken");
-const XYZToken = artifacts.require("test/XYZToken");
-const MiniToken = artifacts.require("test/MiniToken");
-const MaliciousToken = artifacts.require("test/MaliciousToken");
-const RelayerHub = artifacts.require("RelayerHub");
-const GovHub = artifacts.require("GovHub");
-const BSCValidatorSet = artifacts.require("BSCValidatorSet");
-const SlashIndicator = artifacts.require("SlashIndicator");
-
-const Web3 = require('web3');
-const RLP = require('rlp');
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-
-const GOV_CHANNEL_ID = 0x09;
-const proof = Buffer.from(web3.utils.hexToBytes("0x00"));
-const merkleHeight = 100;
-
-function serialize(key,value, target,extra) {
-    let pkg = [];
-    pkg.push(key);
-    pkg.push(value);
-    pkg.push(target);
-    if(extra != null){
-        pkg.push(extra);
-    }
-    return RLP.encode(pkg);
-}
-
-function toBytes32String(input) {
-    let initialInputHexStr = web3.utils.toBN(input).toString(16);
-    const initialInputHexStrLength = initialInputHexStr.length;
-
-    let inputHexStr = initialInputHexStr;
-    for (var i = 0; i < 64 - initialInputHexStrLength; i++) {
-        inputHexStr = '0' + inputHexStr;
-    }
-    return inputHexStr;
-}
-
-function buildSyncPackagePrefix(syncRelayFee) {
-    return Buffer.from(web3.utils.hexToBytes(
-        "0x00" + toBytes32String(syncRelayFee)
-    ));
-}
-
-contract('RelayerIncentivize', (accounts) => {
-    it('init incentivize', async () => {
-        const relayerIncentivize = await RelayerIncentivize.deployed();
-        const systemReward = await SystemReward.deployed();
-        let uselessAddr = web3.eth.accounts.create().address;
-
-        const systemRewardContract = await relayerIncentivize.SYSTEM_REWARD_ADDR.call();
-        assert.equal(systemRewardContract, systemReward.address, "wrong system reward contract address");
-    });
-    it('header relayer incentivize', async () => {
-        const relayerIncentivize = await RelayerIncentivize.deployed();
-
-        const initialAccount1Balance = await web3.eth.getBalance(accounts[1]);
-        const initialAccount2Balance = await web3.eth.getBalance(accounts[2]);
-        const initialAccount3Balance = await web3.eth.getBalance(accounts[3]);
-        const initialAccount4Balance = await web3.eth.getBalance(accounts[4]);
-        const initialAccount5Balance = await web3.eth.getBalance(accounts[5]);
-        const initialAccount6Balance = await web3.eth.getBalance(accounts[6]);
-        const initialAccount7Balance = await web3.eth.getBalance(accounts[7]);
-        const initialAccount8Balance = await web3.eth.getBalance(accounts[8]);
-
-        const roundSize = await relayerIncentivize.ROUND_SIZE.call();
-        assert.equal(roundSize.toNumber(), 30, "wrong round size");
-        const maximumWeight = await relayerIncentivize.MAXIMUM_WEIGHT.call();
-        assert.equal(maximumWeight.toNumber(), 3, "wrong maximum weight");
-
-        for(let i=0; i<1; i++){
-            await relayerIncentivize.addReward(accounts[1], accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-        for(let i=0; i<2; i++){
-            await relayerIncentivize.addReward(accounts[2], accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-        for(let i=0; i<3; i++){
-            await relayerIncentivize.addReward(accounts[3], accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-        for(let i=0; i<4; i++){
-            await relayerIncentivize.addReward(accounts[4], accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-        for(let i=0; i<5; i++){
-            await relayerIncentivize.addReward(accounts[5], accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-        for(let i=0; i<6; i++){
-            await relayerIncentivize.addReward(accounts[6], accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-        for(let i=0; i<7; i++){
-            await relayerIncentivize.addReward(accounts[7], accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-        for(let i=0; i<2; i++){
-            await relayerIncentivize.addReward(accounts[8], accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-
-        let roundSequence = await relayerIncentivize.roundSequence.call();
-        assert.equal(roundSequence.toNumber(), 1, "wrong round sequence");
-
-        await relayerIncentivize.claimRelayerReward(accounts[1], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[2], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[3], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[4], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[5], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[6], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[7], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[8], {from: accounts[0]});
-
-        const newAccount1Balance = await web3.eth.getBalance(accounts[1]);
-        const newAccount2Balance = await web3.eth.getBalance(accounts[2]);
-        const newAccount3Balance = await web3.eth.getBalance(accounts[3]);
-        const newAccount4Balance = await web3.eth.getBalance(accounts[4]);
-        const newAccount5Balance = await web3.eth.getBalance(accounts[5]);
-        const newAccount6Balance = await web3.eth.getBalance(accounts[6]);
-        const newAccount7Balance = await web3.eth.getBalance(accounts[7]);
-        const newAccount8Balance = await web3.eth.getBalance(accounts[8]);
-
-        const rewardAccount1 = web3.utils.toBN(newAccount1Balance).sub(web3.utils.toBN(initialAccount1Balance));
-        const rewardAccount2 = web3.utils.toBN(newAccount2Balance).sub(web3.utils.toBN(initialAccount2Balance));
-        const rewardAccount3 = web3.utils.toBN(newAccount3Balance).sub(web3.utils.toBN(initialAccount3Balance));
-        const rewardAccount4 = web3.utils.toBN(newAccount4Balance).sub(web3.utils.toBN(initialAccount4Balance));
-        const rewardAccount5 = web3.utils.toBN(newAccount5Balance).sub(web3.utils.toBN(initialAccount5Balance));
-        const rewardAccount6 = web3.utils.toBN(newAccount6Balance).sub(web3.utils.toBN(initialAccount6Balance));
-        const rewardAccount7 = web3.utils.toBN(newAccount7Balance).sub(web3.utils.toBN(initialAccount7Balance));
-        const rewardAccount8 = web3.utils.toBN(newAccount8Balance).sub(web3.utils.toBN(initialAccount8Balance));
-
-        assert.equal(rewardAccount1.lt(rewardAccount2), true, "wrong reward");
-        assert.equal(rewardAccount2.lt(rewardAccount3), true, "wrong reward");
-        assert.equal(rewardAccount3.eq(rewardAccount4), true, "wrong reward");
-        assert.equal(rewardAccount4.eq(rewardAccount5), true, "wrong reward");
-        assert.equal(rewardAccount5.eq(rewardAccount6), true, "wrong reward");
-        assert.equal(rewardAccount6.eq(rewardAccount7), true, "wrong reward");
-        assert.equal(rewardAccount8.eq(rewardAccount2), true, "wrong reward");
-
-    });
-    it('transfer relayer Incentivize', async () => {
-        const relayerIncentivize = await RelayerIncentivize.deployed();
-
-        const initialAccount1Balance = await web3.eth.getBalance(accounts[1]);
-        const initialAccount2Balance = await web3.eth.getBalance(accounts[2]);
-        const initialAccount3Balance = await web3.eth.getBalance(accounts[3]);
-        const initialAccount4Balance = await web3.eth.getBalance(accounts[4]);
-        const initialAccount5Balance = await web3.eth.getBalance(accounts[5]);
-        const initialAccount6Balance = await web3.eth.getBalance(accounts[6]);
-        const initialAccount7Balance = await web3.eth.getBalance(accounts[7]);
-        const initialAccount8Balance = await web3.eth.getBalance(accounts[8]);
-
-        const gasPriceStr = await web3.eth.getGasPrice();
-        const gasPrice = web3.utils.toBN(gasPriceStr);
-
-        let account1TxFee = web3.utils.toBN(0);
-        let account2TxFee = web3.utils.toBN(0);
-        let account3TxFee = web3.utils.toBN(0);
-        let account4TxFee = web3.utils.toBN(0);
-        let account5TxFee = web3.utils.toBN(0);
-        let account6TxFee = web3.utils.toBN(0);
-        let account7TxFee = web3.utils.toBN(0);
-        let account8TxFee = web3.utils.toBN(0);
-
-        const tokenHub = accounts[9];
-
-        for(let i=0; i<1; i++){
-            let tx = await relayerIncentivize.addReward(accounts[0], accounts[1], web3.utils.toBN(1e16), false, {from: tokenHub});
-            const txFee = web3.utils.toBN(tx.receipt.gasUsed).mul(gasPrice);
-            account1TxFee = account1TxFee.add(txFee)
-        }
-        for(let i=0; i<2; i++){
-            let tx = await relayerIncentivize.addReward(accounts[0], accounts[2], web3.utils.toBN(1e16), false, {from: tokenHub});
-            const txFee = web3.utils.toBN(tx.receipt.gasUsed).mul(gasPrice);
-            account2TxFee = account2TxFee.add(txFee)
-        }
-        for(let i=0; i<3; i++){
-            let tx = await relayerIncentivize.addReward(accounts[0], accounts[3], web3.utils.toBN(1e16), false, {from: tokenHub});
-            const txFee = web3.utils.toBN(tx.receipt.gasUsed).mul(gasPrice);
-            account3TxFee = account3TxFee.add(txFee)
-        }
-        for(let i=0; i<4; i++){
-            let tx = await relayerIncentivize.addReward(accounts[0], accounts[4], web3.utils.toBN(1e16), false, {from: tokenHub});
-            const txFee = web3.utils.toBN(tx.receipt.gasUsed).mul(gasPrice);
-            account4TxFee = account4TxFee.add(txFee)
-        }
-        for(let i=0; i<5; i++){
-            let tx = await relayerIncentivize.addReward(accounts[0], accounts[5], web3.utils.toBN(1e16), false, {from: tokenHub});
-            const txFee = web3.utils.toBN(tx.receipt.gasUsed).mul(gasPrice);
-            account5TxFee = account5TxFee.add(txFee)
-        }
-        for(let i=0; i<6; i++){
-            let tx = await relayerIncentivize.addReward(accounts[0], accounts[6], web3.utils.toBN(1e16), false, {from: tokenHub});
-            const txFee = web3.utils.toBN(tx.receipt.gasUsed).mul(gasPrice);
-            account6TxFee = account6TxFee.add(txFee)
-        }
-        for(let i=0; i<7; i++){
-            let tx = await relayerIncentivize.addReward(accounts[0], accounts[7], web3.utils.toBN(1e16), false,{from: tokenHub});
-            const txFee = web3.utils.toBN(tx.receipt.gasUsed).mul(gasPrice);
-            account7TxFee = account7TxFee.add(txFee)
-        }
-        for(let i=0; i<2; i++){
-            let tx = await relayerIncentivize.addReward(accounts[0], accounts[8], web3.utils.toBN(1e16), false, {from: tokenHub});
-            const txFee = web3.utils.toBN(tx.receipt.gasUsed).mul(gasPrice);
-            account8TxFee = account8TxFee.add(txFee)
-        }
-        let roundSequence = await relayerIncentivize.roundSequence.call();
-        assert.equal(roundSequence.toNumber(), 2, "wrong round sequence");
-
-        await relayerIncentivize.claimRelayerReward(accounts[1], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[2], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[3], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[4], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[5], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[6], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[7], {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(accounts[8], {from: accounts[0]});
-
-        const newAccount1Balance = await web3.eth.getBalance(accounts[1]);
-        const newAccount2Balance = await web3.eth.getBalance(accounts[2]);
-        const newAccount3Balance = await web3.eth.getBalance(accounts[3]);
-        const newAccount4Balance = await web3.eth.getBalance(accounts[4]);
-        const newAccount5Balance = await web3.eth.getBalance(accounts[5]);
-        const newAccount6Balance = await web3.eth.getBalance(accounts[6]);
-        const newAccount7Balance = await web3.eth.getBalance(accounts[7]);
-        const newAccount8Balance = await web3.eth.getBalance(accounts[8]);
-
-        const pureRewardAccount1 = web3.utils.toBN(newAccount1Balance).sub(web3.utils.toBN(initialAccount1Balance)).sub(account1TxFee);
-        const pureRewardAccount2 = web3.utils.toBN(newAccount2Balance).sub(web3.utils.toBN(initialAccount2Balance)).sub(account2TxFee);
-        const pureRewardAccount3 = web3.utils.toBN(newAccount3Balance).sub(web3.utils.toBN(initialAccount3Balance)).sub(account3TxFee);
-        const pureRewardAccount4 = web3.utils.toBN(newAccount4Balance).sub(web3.utils.toBN(initialAccount4Balance)).sub(account4TxFee);
-        const pureRewardAccount5 = web3.utils.toBN(newAccount5Balance).sub(web3.utils.toBN(initialAccount5Balance)).sub(account5TxFee);
-        const pureRewardAccount6 = web3.utils.toBN(newAccount6Balance).sub(web3.utils.toBN(initialAccount6Balance)).sub(account6TxFee);
-        const pureRewardAccount7 = web3.utils.toBN(newAccount7Balance).sub(web3.utils.toBN(initialAccount7Balance)).sub(account7TxFee);
-        const pureRewardAccount8 = web3.utils.toBN(newAccount8Balance).sub(web3.utils.toBN(initialAccount8Balance)).sub(account8TxFee);
-
-        assert.equal(pureRewardAccount1.lt(pureRewardAccount2), true, "wrong reward");
-        assert.equal(pureRewardAccount2.lt(pureRewardAccount3), true, "wrong reward");
-        assert.equal(pureRewardAccount3.gt(pureRewardAccount4), true, "wrong reward");
-        assert.equal(pureRewardAccount4.gt(pureRewardAccount5), true, "wrong reward");
-        assert.equal(pureRewardAccount5.gt(pureRewardAccount6), true, "wrong reward");
-        assert.equal(pureRewardAccount6.gt(pureRewardAccount7), true, "wrong reward");
-        assert.equal(pureRewardAccount8.gt(pureRewardAccount2), true, "wrong reward"); // get extra 1/80 of total reward
-        assert.equal(pureRewardAccount8.lt(pureRewardAccount3), true, "wrong reward"); // get extra 1/80 of total reward
-    });
-    it('non-payable address', async () => {
-        const relayerIncentivize = await RelayerIncentivize.deployed();
-        const tendermintLightClient = await TendermintLightClient.deployed();
-
-        const tokenHub = accounts[9];
-        const relayer = accounts[0];
-
-        for(let i=0; i<15; i++){
-            await relayerIncentivize.addReward(tendermintLightClient.address, relayer, web3.utils.toBN(1e16), false, {from: tokenHub});
-        }
-
-        for(let i=0; i<14; i++){
-            await relayerIncentivize.addReward(relayer, tendermintLightClient.address, web3.utils.toBN(1e16), false, {from: tokenHub});
-        }
-
-        const systemReward = await SystemReward.deployed();
-        const originSystemRewardBalance = await web3.eth.getBalance(systemReward.address);
-
-        await relayerIncentivize.addReward(relayer, tendermintLightClient.address, web3.utils.toBN(1e16), true, {from: tokenHub});
-
-        await relayerIncentivize.claimRelayerReward(relayer, {from: accounts[0]});
-        await relayerIncentivize.claimRelayerReward(tendermintLightClient.address, {from: accounts[0]});
-
-        const newSystemRewardBalance = await web3.eth.getBalance(systemReward.address);
-        assert.equal(web3.utils.toBN(newSystemRewardBalance).sub(web3.utils.toBN(originSystemRewardBalance)).eq(web3.utils.toBN(146812500000000000)), true, "wrong amount to systemReward contract");
-
-        let roundSequence = await relayerIncentivize.roundSequence.call();
-        assert.equal(roundSequence.toNumber(), 3, "wrong round sequence");
-    });
-    it('dynamic extra incentive', async () => {
-        const relayerIncentivize = await RelayerIncentivize.deployed();
-        const crossChain = await CrossChain.deployed();
-        const govHub = await GovHub.deployed();
-        const relayer = accounts[2];
-
-        const relayerInstance = await RelayerHub.deployed();
-        await relayerInstance.register({from: relayer, value: 1e20});
-
-        const initialAccount1Balance = await web3.eth.getBalance(relayer);
-
-        const roundSize = await relayerIncentivize.ROUND_SIZE.call();
-        assert.equal(roundSize.toNumber(), 30, "wrong round size");
-        const maximumWeight = await relayerIncentivize.MAXIMUM_WEIGHT.call();
-        assert.equal(maximumWeight.toNumber(), 3, "wrong maximum weight");
-
-        for(let i=0; i<30; i++){
-            await relayerIncentivize.addReward(relayer, accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-
-        await relayerIncentivize.claimRelayerReward(relayer, {from: accounts[0]});
-
-        let roundSequence = await relayerIncentivize.roundSequence.call();
-        assert.equal(roundSequence.toNumber(), 4, "wrong round sequence");
-
-        const newRelayerBalance1 = await web3.eth.getBalance(relayer);
-
-        const relayerReward1 = web3.utils.toBN(newRelayerBalance1).sub(web3.utils.toBN(initialAccount1Balance));
-
-
-        for(let i=0; i<30; i++){
-            await relayerIncentivize.addReward(relayer, accounts[0], web3.utils.toBN(2e16), false, {from: accounts[0]});
-        }
-
-        await relayerIncentivize.claimRelayerReward(relayer, {from: accounts[0]});
-
-        roundSequence = await relayerIncentivize.roundSequence.call();
-        assert.equal(roundSequence.toNumber(), 5, "wrong round sequence");
-
-        const newRelayerBalance2 = await web3.eth.getBalance(relayer);
-
-        const relayerReward2 = web3.utils.toBN(newRelayerBalance2).sub(web3.utils.toBN(newRelayerBalance1));
-        assert.equal(relayerReward2.gt(relayerReward1), true, "relayerReward2 should be larger than relayerReward1");
-
-        let dynamicExtraIncentiveAmount = await relayerIncentivize.dynamicExtraIncentiveAmount.call();
-        assert.equal(web3.utils.toBN(dynamicExtraIncentiveAmount).eq(web3.utils.toBN(0)), true, "wrong dynamicExtraIncentiveAmount");
-
-        await govHub.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address, TokenHub.address, RelayerIncentivize.address, RelayerHub.address, GovHub.address, TokenManager.address, CrossChain.address);
-
-        await web3.eth.sendTransaction({to:SystemReward.address, from:accounts[3], value: web3.utils.toWei("10", "ether")});
-
-        let govChannelSeq = await crossChain.channelReceiveSequenceMap(GOV_CHANNEL_ID);
-        let govValue = "0x000000000000000000000000000000000000000000000000002386F26FC10000";// 1e16;
-        let govPackageBytes = serialize("dynamicExtraIncentiveAmount", govValue, RelayerIncentivize.address);
-        await crossChain.handlePackage(Buffer.concat([buildSyncPackagePrefix(2e16), (govPackageBytes)]), proof, merkleHeight, govChannelSeq, GOV_CHANNEL_ID, {from: relayer});
-
-        await govHub.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address, TokenHub.address, RelayerIncentivize.address, RelayerHub.address, GovHub.address, TokenManager.address, accounts[8]);
-
-        dynamicExtraIncentiveAmount = await relayerIncentivize.dynamicExtraIncentiveAmount.call();
-        assert.equal(web3.utils.toBN(dynamicExtraIncentiveAmount).eq(web3.utils.toBN(1e16)), true, "wrong dynamicExtraIncentiveAmount");
-
-        for(let i=0; i<29; i++){
-            await relayerIncentivize.addReward(relayer, accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-
-        roundSequence = await relayerIncentivize.roundSequence.call();
-        assert.equal(roundSequence.toNumber(), 6, "wrong round sequence");
-
-        await relayerIncentivize.claimRelayerReward(relayer, {from: accounts[0]});
-
-        const relayerBalanceBeforeReward3 = await web3.eth.getBalance(relayer);
-
-        for(let i=0; i<30; i++){
-            await relayerIncentivize.addReward(relayer, accounts[0], web3.utils.toBN(1e16), false, {from: accounts[0]});
-        }
-
-        await relayerIncentivize.claimRelayerReward(relayer, {from: accounts[0]});
-
-        roundSequence = await relayerIncentivize.roundSequence.call();
-        assert.equal(roundSequence.toNumber(), 7, "wrong round sequence");
-
-        const newRelayerBalance3 = await web3.eth.getBalance(relayer);
-
-        const relayerReward3 = web3.utils.toBN(newRelayerBalance3).sub(web3.utils.toBN(relayerBalanceBeforeReward3));
-        assert.equal(relayerReward3.eq(relayerReward2), true, "relayerReward3 should equal to relayerReward2");
-    });
-});
diff --git a/test/TestTendermintLightClient.js b/test/TestTendermintLightClient.js
deleted file mode 100644
index 04648b34..00000000
--- a/test/TestTendermintLightClient.js
+++ /dev/null
@@ -1,25 +0,0 @@
-const SystemReward = artifacts.require("SystemReward");
-const RelayerIncentivize = artifacts.require("RelayerIncentivize");
-const TendermintLightClient = artifacts.require("TendermintLightClient");
-const MockRelayerHub = artifacts.require("mock/MockRelayerHub");
-
-const crypto = require('crypto');
-const Web3 = require('web3');
-const truffleAssert = require('truffle-assertions');
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-
-contract('TendermintLightClient', (accounts) => {
-    it('Init consensus state', async () => {
-        const lightClient = await TendermintLightClient.deployed();
-
-        let uselessAddr = web3.eth.accounts.create().address;
-
-        let initialHeight = await lightClient.initialHeight.call();
-        assert.equal(initialHeight.toNumber(), 2, "mismatched initial consensus height");
-        const chainID  = await lightClient.getChainID.call();
-        assert.equal(chainID, "Binance-Chain-Nile", "mismatched chainID");
-
-        const isHeaderSynced  = await lightClient.isHeaderSynced.call(2);
-        assert.equal(isHeaderSynced, true, "height already synced");
-    });
-});
diff --git a/test/TestTokenHub.js b/test/TestTokenHub.js
deleted file mode 100644
index 8fe454e6..00000000
--- a/test/TestTokenHub.js
+++ /dev/null
@@ -1,1307 +0,0 @@
-const BN = require('bn.js');
-const sleep = require("await-sleep");
-const RLP = require('rlp');
-
-const SystemReward = artifacts.require("SystemReward");
-const RelayerIncentivize = artifacts.require("RelayerIncentivize");
-const TendermintLightClient = artifacts.require("TendermintLightClient");
-const MockLightClient = artifacts.require("mock/MockLightClient");
-const TokenHub = artifacts.require("TokenHub");
-const TokenManager = artifacts.require("TokenManager");
-const CrossChain = artifacts.require("CrossChain");
-const ABCToken = artifacts.require("ABCToken");
-const DEFToken = artifacts.require("DEFToken");
-const XYZToken = artifacts.require("test/XYZToken");
-const MiniToken = artifacts.require("test/MiniToken");
-const MaliciousToken = artifacts.require("test/MaliciousToken");
-const RelayerHub = artifacts.require("RelayerHub");
-const GovHub = artifacts.require("GovHub");
-const BSCValidatorSet = artifacts.require("BSCValidatorSet");
-const SlashIndicator = artifacts.require("SlashIndicator");
-
-const crypto = require('crypto');
-const Web3 = require('web3');
-const truffleAssert = require('truffle-assertions');
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-
-const BIND_CHANNEL_ID = 0x01;
-const TRANSFER_IN_CHANNELID = 0x02;
-const TRANSFER_OUT_CHANNELID = 0x03;
-const MIRROR_CHANNELID = 0x04;
-const SYNC_CHANNELID = 0x05;
-const GOV_CHANNEL_ID = 0x09;
-
-const proof = Buffer.from(web3.utils.hexToBytes("0x00"));
-const merkleHeight = 100;
-
-function toBytes32String(input) {
-    let initialInputHexStr = web3.utils.toBN(input).toString(16);
-    const initialInputHexStrLength = initialInputHexStr.length;
-
-    let inputHexStr = initialInputHexStr;
-    for (var i = 0; i < 64 - initialInputHexStrLength; i++) {
-        inputHexStr = '0' + inputHexStr;
-    }
-    return inputHexStr;
-}
-
-function stringToBytes32(symbol) {
-    var initialSymbolHexStr = '';
-    for (var i=0; i<symbol.length; i++) {
-        initialSymbolHexStr += symbol.charCodeAt(i).toString(16);
-    }
-
-    const initialSymbolHexStrLength = initialSymbolHexStr.length;
-
-    let bep2Bytes32Symbol = initialSymbolHexStr;
-    for (var i = 0; i < 64 - initialSymbolHexStrLength; i++) {
-        bep2Bytes32Symbol = bep2Bytes32Symbol + "0";
-    }
-    return '0x'+bep2Bytes32Symbol;
-}
-
-function buildSyncPackagePrefix(syncRelayFee) {
-    return Buffer.from(web3.utils.hexToBytes(
-        "0x00" + toBytes32String(syncRelayFee)
-    ));
-}
-
-function buildAckPackagePrefix() {
-    return Buffer.from(web3.utils.hexToBytes(
-        "0x01" + toBytes32String(0)
-    ));
-}
-
-function buildFailAckPackagePrefix() {
-    return Buffer.from(web3.utils.hexToBytes(
-        "0x02" + toBytes32String(0)
-    ));
-}
-
-function buildBindPackage(bindType, bep2TokenSymbol, bep20Addr, totalSupply, peggyAmount, decimals) {
-    let timestamp = Math.floor(Date.now() / 1000); // counted by second
-    let initialExpireTimeStr = (timestamp + 3).toString(16); // expire at 5 second later
-    const initialExpireTimeStrLength = initialExpireTimeStr.length;
-    let expireTimeStr = initialExpireTimeStr;
-    for (var i = 0; i < 16 - initialExpireTimeStrLength; i++) {
-        expireTimeStr = '0' + expireTimeStr;
-    }
-    expireTimeStr = "0x" + expireTimeStr;
-
-    const packageBytesPrefix = buildSyncPackagePrefix(1e16);
-
-    const packageBytes = RLP.encode([
-        bindType,
-        stringToBytes32(bep2TokenSymbol),
-        bep20Addr,
-        web3.utils.toBN(totalSupply).mul(web3.utils.toBN(10).pow(web3.utils.toBN(decimals))),
-        web3.utils.toBN(peggyAmount).mul(web3.utils.toBN(10).pow(web3.utils.toBN(decimals))),
-        decimals,
-        expireTimeStr]);
-
-    return Buffer.concat([packageBytesPrefix, packageBytes]);
-}
-
-function buildTransferInPackage(bep2TokenSymbol, bep20Addr, amount, recipient, refundAddr) {
-    let timestamp = Math.floor(Date.now() / 1000); // counted by second
-    let initialExpireTimeStr = (timestamp + 3).toString(16); // expire at 5 second later
-    const initialExpireTimeStrLength = initialExpireTimeStr.length;
-    let expireTimeStr = initialExpireTimeStr;
-    for (var i = 0; i < 16 - initialExpireTimeStrLength; i++) {
-        expireTimeStr = '0' + expireTimeStr;
-    }
-    expireTimeStr = "0x" + expireTimeStr;
-
-    const packageBytesPrefix = buildSyncPackagePrefix(1e16);
-
-    const packageBytes = RLP.encode([
-        stringToBytes32(bep2TokenSymbol),
-        bep20Addr,
-        amount,
-        recipient,
-        refundAddr,
-        expireTimeStr]);
-
-    return Buffer.concat([packageBytesPrefix, packageBytes]);
-}
-
-function buildTransferInPackageWithRelayFee(bep2TokenSymbol, bep20Addr, amount, recipient, refundAddr, syncRelayFee) {
-    let timestamp = Math.floor(Date.now() / 1000); // counted by second
-    let initialExpireTimeStr = (timestamp + 3).toString(16); // expire at 5 second later
-    const initialExpireTimeStrLength = initialExpireTimeStr.length;
-    let expireTimeStr = initialExpireTimeStr;
-    for (var i = 0; i < 16 - initialExpireTimeStrLength; i++) {
-        expireTimeStr = '0' + expireTimeStr;
-    }
-    expireTimeStr = "0x" + expireTimeStr;
-
-    const packageBytesPrefix = buildSyncPackagePrefix(syncRelayFee);
-
-    const packageBytes = RLP.encode([
-        stringToBytes32(bep2TokenSymbol),
-        bep20Addr,
-        amount,
-        recipient,
-        refundAddr,
-        expireTimeStr]);
-
-    return Buffer.concat([packageBytesPrefix, packageBytes]);
-}
-
-function decodeMirrorSynPackage(packageBytes) {
-    eventPayloadBytes = Buffer.from(web3.utils.hexToBytes(packageBytes));
-    assert.ok(eventPayloadBytes.length>=33, "wrong bind ack package");
-    assert.equal(web3.utils.bytesToHex(eventPayloadBytes.subarray(0, 1)), "0x00", "wrong package type");
-    mirrorSynPackage = RLP.decode(eventPayloadBytes.subarray(33, eventPayloadBytes.length));
-
-    const mirrorSender = web3.utils.bytesToHex(mirrorSynPackage[0]);
-    const bep20Addr = web3.utils.bytesToHex(mirrorSynPackage[1]);
-    const bep20Name = web3.utils.bytesToHex(mirrorSynPackage[2]);
-    const bep20Symbol = web3.utils.bytesToHex(mirrorSynPackage[3]);
-    const bep20Supply = web3.utils.bytesToHex(mirrorSynPackage[4]);
-    const bep20Decimals = web3.utils.bytesToHex(mirrorSynPackage[5]);
-    const mirrorFee = web3.utils.bytesToHex(mirrorSynPackage[6]);
-    const expireTime = web3.utils.bytesToHex(mirrorSynPackage[7]);
-
-    return {mirrorSender, bep20Addr, bep20Name, bep20Symbol, bep20Supply, bep20Decimals, mirrorFee, expireTime};
-}
-
-function buildMirrorAckPackage(mirrorSender, bep20Addr, bep20Decimals, bep2Symbol, refundAmount, errorCode) {
-    const packageBytesPrefix = buildAckPackagePrefix();
-    const packageBytes = RLP.encode([
-        mirrorSender,
-        bep20Addr,
-        bep20Decimals,
-        stringToBytes32(bep2Symbol),
-        refundAmount,
-        errorCode]);
-    return Buffer.concat([packageBytesPrefix, packageBytes]);
-}
-
-function decodeSyncSynPackage(packageBytes) {
-    eventPayloadBytes = Buffer.from(web3.utils.hexToBytes(packageBytes));
-    assert.ok(eventPayloadBytes.length>=33, "wrong bind ack package");
-    assert.equal(web3.utils.bytesToHex(eventPayloadBytes.subarray(0, 1)), "0x00", "wrong package type");
-    syncSynPackage = RLP.decode(eventPayloadBytes.subarray(33, eventPayloadBytes.length));
-    const syncSender = web3.utils.bytesToHex(syncSynPackage[0]);
-    const bep20Addr = web3.utils.bytesToHex(syncSynPackage[1]);
-    const bep2Symbol = web3.utils.bytesToHex(syncSynPackage[2]);
-    const bep20Supply = web3.utils.bytesToHex(syncSynPackage[3]);
-    const syncFee = web3.utils.bytesToHex(syncSynPackage[4]);
-    const expireTime = web3.utils.bytesToHex(syncSynPackage[5]);
-    return {syncSender, bep20Addr, bep2Symbol, bep20Supply, syncFee, expireTime};
-}
-
-function buildSyncAckPackage(syncSender, bep20Addr, refundAmount, errorCode) {
-    const packageBytesPrefix = buildAckPackagePrefix();
-    const packageBytes = RLP.encode([
-        syncSender,
-        bep20Addr,
-        refundAmount,
-        errorCode
-    ]);
-    return Buffer.concat([packageBytesPrefix, packageBytes]);
-}
-
-function serialize(key, value, target, extra) {
-    let pkg = [];
-    pkg.push(key);
-    pkg.push(value);
-    pkg.push(target);
-    if(extra != null){
-        pkg.push(extra);
-    }
-    return RLP.encode(pkg);
-}
-
-function verifyPrefixAndExtractSyncPackage(payload, expectedRelayFee) {
-    eventPayloadBytes = Buffer.from(web3.utils.hexToBytes(payload));
-    assert.ok(eventPayloadBytes.length>=33, "wrong bind ack package");
-    assert.equal(web3.utils.bytesToHex(eventPayloadBytes.subarray(0, 1)), "0x00", "wrong package type");
-    assert.ok(web3.utils.toBN(web3.utils.bytesToHex(eventPayloadBytes.subarray(1, 33))).eq(web3.utils.toBN(expectedRelayFee)), "wrong relay fee");
-    return RLP.decode(eventPayloadBytes.subarray(33, eventPayloadBytes.length));
-}
-
-function verifyPrefixAndExtractAckPackage(payload) {
-    eventPayloadBytes = Buffer.from(web3.utils.hexToBytes(payload));
-    assert.ok(eventPayloadBytes.length>=33, "wrong bind ack package");
-    assert.equal(web3.utils.bytesToHex(eventPayloadBytes.subarray(0, 1)), "0x01", "wrong package type");
-    assert.ok(web3.utils.toBN(web3.utils.bytesToHex(eventPayloadBytes.subarray(1, 33))).eq(web3.utils.toBN(0)), "wrong relay fee");
-    if (eventPayloadBytes.length>33) {
-        return RLP.decode(eventPayloadBytes.subarray(33, eventPayloadBytes.length));
-    }
-    return []
-}
-
-contract('TokenHub', (accounts) => {
-    it('Init TokenHub', async () => {
-        const mockLightClient = await MockLightClient.deployed();
-        await mockLightClient.setBlockNotSynced(false);
-
-        const tokenHub = await TokenHub.deployed();
-        let balance_wei = await web3.eth.getBalance(tokenHub.address);
-        assert.equal(balance_wei, 50e18, "wrong balance");
-
-        const relayer = accounts[1];
-        const relayerInstance = await RelayerHub.deployed();
-        await relayerInstance.register({from: relayer, value: 1e20});
-        let res = await relayerInstance.isRelayer.call(relayer);
-        assert.equal(res,true);
-    });
-    it('Relay expired bind package', async () => {
-        const abcToken = await ABCToken.deployed();
-        const tokenManager = await TokenManager.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const owner = accounts[0];
-        const relayer = accounts[1];
-
-        const bindPackage = buildBindPackage(0, "ABC-9C7", abcToken.address, 1e8, 99e6, 18);
-        let bindSequence = await crossChain.channelReceiveSequenceMap.call(BIND_CHANNEL_ID);
-
-        await crossChain.handlePackage(bindPackage, proof, merkleHeight, bindSequence, BIND_CHANNEL_ID, {from: relayer});
-
-        let bindRequenst = await tokenManager.bindPackageRecord.call(stringToBytes32("ABC-9C7")); // symbol: ABC-9C7
-        assert.equal(bindRequenst.bep2TokenSymbol.toString(), stringToBytes32("ABC-9C7"), "wrong bep2TokenSymbol");
-        assert.equal(bindRequenst.totalSupply.eq(new BN('52b7d2dcc80cd2e4000000', 16)), true, "wrong total supply");  // 1e26
-        assert.equal(bindRequenst.peggyAmount.eq(new BN('51e410c0f93fe543000000', 16)), true, "wrong peggy amount");  // 99e24
-        assert.equal(bindRequenst.contractAddr.toString(), abcToken.address.toString(), "wrong contract address");
-
-        let lockAmount = await tokenManager.queryRequiredLockAmountForBind( "ABC-9C7");
-        assert.equal(web3.utils.toBN(1e18).mul(web3.utils.toBN(1e6)).eq(lockAmount), true, "wrong lock amount");
-        try {
-            await tokenManager.approveBind(abcToken.address, "ABC-9C7", {from: relayer});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("only bep20 owner can approve this bind request"));
-        }
-
-        try {
-            await tokenManager.approveBind("0x0000000000000000000000000000000000000000", "ABC-9C7", {from: relayer});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("contact address doesn't equal to the contract address in bind request"));
-        }
-
-        try {
-            await tokenManager.approveBind(abcToken.address, "ABC-9C7", {from: owner});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("allowance is not enough"));
-        }
-
-        await abcToken.approve(tokenManager.address, web3.utils.toBN(1e18).mul(web3.utils.toBN(1e6)), {from: owner});
-        await sleep(5 * 1000);
-        // approve expired bind request
-        let tx = await tokenManager.approveBind(abcToken.address, "ABC-9C7", {from: owner, value: 1e16});
-
-        let nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        decoded = verifyPrefixAndExtractSyncPackage(nestedEventValues.payload, 1e6);
-        assert.equal(web3.utils.bytesToHex(decoded[0]), "0x01", "bind status should be timeout");
-        assert.equal(web3.utils.bytesToHex(decoded[1]), stringToBytes32("ABC-9C7"), "wrong bep2TokenSymbol");
-
-        bindRequenst = await tokenManager.bindPackageRecord.call(stringToBytes32("ABC-9C7")); // symbol: ABC-9C7
-        assert.equal(bindRequenst.bep2TokenSymbol.toString(), "0x0000000000000000000000000000000000000000000000000000000000000000", "wrong bep2TokenSymbol");
-    });
-    it('Reject bind', async () => {
-        const tokenManager = await TokenManager.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const owner = accounts[0];
-        const relayer = accounts[1];
-
-        const bindPackage = buildBindPackage(0, "ABC-9C7", abcToken.address, 1e8, 99e6, 18);                                                      //expire time
-        let bindSequence = await crossChain.channelReceiveSequenceMap.call(BIND_CHANNEL_ID);
-
-        await crossChain.handlePackage(bindPackage, proof, merkleHeight, bindSequence, BIND_CHANNEL_ID, {from: relayer});
-
-        try {
-            await tokenManager.rejectBind(abcToken.address, "ABC-9C7", {from: relayer, value: 1e16});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("only bep20 owner can reject"));
-        }
-
-        let tx = await tokenManager.rejectBind(abcToken.address, "ABC-9C7", {from: owner, value: 1e16});
-
-        let nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        decoded = verifyPrefixAndExtractSyncPackage(nestedEventValues.payload, 1e6);
-
-        assert.equal(web3.utils.bytesToHex(decoded[0]), "0x07", "bind status should be rejected");
-        assert.equal(web3.utils.bytesToHex(decoded[1]), stringToBytes32("ABC-9C7"), "wrong bep2TokenSymbol");
-
-        const bindRequenst = await tokenManager.bindPackageRecord.call(stringToBytes32("ABC-9C7")); // symbol: ABC-9C7
-        assert.equal(bindRequenst.bep2TokenSymbol.toString(), "0x0000000000000000000000000000000000000000000000000000000000000000", "wrong bep2TokenSymbol");
-    });
-    it('Expire bind', async () => {
-        const tokenManager = await TokenManager.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const owner = accounts[0];
-        const relayer = accounts[1];
-
-        const bindPackage = buildBindPackage(0, "ABC-9C7", abcToken.address, 1e8, 99e6, 18);
-        let bindSequence = await crossChain.channelReceiveSequenceMap.call(BIND_CHANNEL_ID);
-
-        let tx = await crossChain.handlePackage(bindPackage, proof, merkleHeight, bindSequence, BIND_CHANNEL_ID, {from: relayer});
-
-        try {
-            await tokenManager.expireBind("ABC-9C7", {from: accounts[2], value: 1e16});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("bind request is not expired"));
-        }
-
-        await sleep(5 * 1000);
-
-        tx = await tokenManager.expireBind("ABC-9C7", {from: accounts[2], value: 1e16});
-
-        let nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        decoded = verifyPrefixAndExtractSyncPackage(nestedEventValues.payload, 1e6);
-        assert.equal(web3.utils.bytesToHex(decoded[0]), "0x01", "bind status should be timeout");
-        assert.equal(web3.utils.bytesToHex(decoded[1]), stringToBytes32("ABC-9C7"), "wrong bep2TokenSymbol");
-
-        bindRequenst = await tokenManager.bindPackageRecord.call(stringToBytes32("ABC-9C7")); // symbol: ABC-9C7
-        assert.equal(bindRequenst.bep2TokenSymbol.toString(), "0x0000000000000000000000000000000000000000000000000000000000000000", "wrong bep2TokenSymbol");
-    });
-    it('Mismatched token symbol', async () => {
-        const tokenManager = await TokenManager.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const owner = accounts[0];
-        const relayer = accounts[1];
-
-        const bindPackage = buildBindPackage(0, "DEF-9C7", abcToken.address, 1e8, 99e6, 18);
-        let bindSequence = await crossChain.channelReceiveSequenceMap.call(BIND_CHANNEL_ID);
-
-        let tx = await crossChain.handlePackage(bindPackage, proof, merkleHeight, bindSequence, BIND_CHANNEL_ID, {from: relayer});
-
-        tx = await tokenManager.approveBind(abcToken.address, "DEF-9C7", {from: owner, value: 1e16});
-
-        let nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        decoded = verifyPrefixAndExtractSyncPackage(nestedEventValues.payload, 1e6);
-        assert.equal(web3.utils.bytesToHex(decoded[0]), "0x02", "bind status should be symbol mismatch");
-        assert.equal(web3.utils.bytesToHex(decoded[1]), stringToBytes32("DEF-9C7"), "wrong bep2TokenSymbol");
-
-        bindRequenst = await tokenManager.bindPackageRecord.call(stringToBytes32("DEF-9C7")); // symbol: ABC-9C7
-        assert.equal(bindRequenst.bep2TokenSymbol.toString(), "0x0000000000000000000000000000000000000000000000000000000000000000", "wrong bep2TokenSymbol");
-    });
-    it('Success bind', async () => {
-        const tokenManager = await TokenManager.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const owner = accounts[0];
-        const relayer = accounts[1];
-
-        const bindPackage = buildBindPackage(0, "ABC-9C7", abcToken.address, 1e8, 99e6, 18);
-        let bindSequence = await crossChain.channelReceiveSequenceMap.call(BIND_CHANNEL_ID);
-
-        await crossChain.handlePackage(bindPackage, proof, merkleHeight, bindSequence, BIND_CHANNEL_ID, {from: relayer});
-
-        let tx = await tokenManager.approveBind(abcToken.address, "ABC-9C7", {from: owner, value: 1e16});
-        truffleAssert.eventEmitted(tx, "bindSuccess",(ev) => {
-            return ev.contractAddr.toLowerCase() === abcToken.address.toLowerCase() && ev.bep2Symbol === "ABC-9C7";
-        });
-        let nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        decoded = verifyPrefixAndExtractSyncPackage(nestedEventValues.payload, 1e6);
-        assert.equal(web3.utils.bytesToHex(decoded[0]), "0x", "bind status should be successful");
-        assert.equal(web3.utils.bytesToHex(decoded[1]), stringToBytes32("ABC-9C7"), "wrong bep2TokenSymbol");
-
-        const tokenHub = await TokenHub.deployed();
-        const bep2Symbol = await tokenHub.getBoundBep2Symbol.call(abcToken.address);
-        assert.equal(bep2Symbol, "ABC-9C7", "wrong symbol");
-        const contractAddr = await tokenHub.getBoundContract.call("ABC-9C7");
-        assert.equal(contractAddr, abcToken.address, "wrong contract addr");
-
-        let tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-        assert.equal(tokenManagerBalance, "0", "tokenManager balance should be zero");
-    });
-    it('Relayer transfer from BC to BSC', async () => {
-        const tokenHub = await TokenHub.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const relayer = accounts[1];
-
-        const transferInPackage = buildTransferInPackage("ABC-9C7", abcToken.address, 155e17, accounts[2], "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48");
-        let transferInSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_IN_CHANNELID);
-
-        let balance = await abcToken.balanceOf.call(accounts[2]);
-        assert.equal(balance.toNumber(), 0, "wrong balance");
-
-        await crossChain.handlePackage(transferInPackage, proof, merkleHeight, transferInSequence, TRANSFER_IN_CHANNELID, {from: relayer});
-
-        balance = await abcToken.balanceOf.call(accounts[2]);
-        assert.equal(balance.eq(web3.utils.toBN(155e17)), true, "wrong balance");
-    });
-    it('Expired transfer from BC to BSC', async () => {
-        const tokenHub = await TokenHub.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const relayer = accounts[1];
-
-        const transferInPackage = buildTransferInPackage("ABC-9C7", abcToken.address, 155e17, accounts[2], "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48");
-        let transferInSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_IN_CHANNELID);
-
-        await sleep(5 * 1000);
-
-        let tx = await crossChain.handlePackage(transferInPackage, proof, merkleHeight, transferInSequence, TRANSFER_IN_CHANNELID, {from: relayer});
-        let event;
-        truffleAssert.eventEmitted(tx, "crossChainPackage",(ev) => {
-            let matched = false;
-            if (ev.packageSequence.toString() === "0") {
-                event = ev;
-                matched = true;
-            }
-            return matched;
-        });
-        let decoded = verifyPrefixAndExtractAckPackage(event.payload);
-        assert.equal(web3.utils.bytesToHex(decoded[0]), stringToBytes32("ABC-9C7"), "response should be empty");
-        assert.ok(web3.utils.bytesToHex(decoded[1]), web3.utils.toBN(155e7).toString(16), "response should be empty");
-        assert.equal(web3.utils.bytesToHex(decoded[2]), "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48", "response should be empty");
-        assert.equal(web3.utils.bytesToHex(decoded[3]), "0x01", "refund status should be timeout");
-
-        let balance = await abcToken.balanceOf.call(accounts[2]);
-        assert.equal(balance.eq(web3.utils.toBN(155e17)), true, "wrong balance");
-    });
-    it('Relayer BNB transfer from BC to BSC', async () => {
-        const tokenHub = await TokenHub.deployed();
-        const crossChain = await CrossChain.deployed();
-        const relayer = accounts[1];
-
-        let transferInPackage = buildTransferInPackage("BNB", "0x0000000000000000000000000000000000000000", 1e18, accounts[2], "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48");
-        let transferInSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_IN_CHANNELID);
-        let initBalance = await web3.eth.getBalance(accounts[2]);
-        let tx = await crossChain.handlePackage(transferInPackage, proof, merkleHeight, transferInSequence, TRANSFER_IN_CHANNELID, {from: relayer});
-        let nestedEvents = (await truffleAssert.createTransactionResult(tokenHub, tx.tx)).logs;
-        assert.equal(nestedEvents.length, 2, "wrong event number");
-        assert.equal(nestedEvents[1].args.amount.eq(web3.utils.toBN(1e16)), true, "wrong relayer amount");
-        let newBalance = await web3.eth.getBalance(accounts[2]);
-        assert.equal(web3.utils.toBN(newBalance).sub(web3.utils.toBN(initBalance)).eq(web3.utils.toBN(1e18)), true, "wrong balance");
-
-        //try a very large relayer fee: 2e18
-        transferInPackage = buildTransferInPackageWithRelayFee("BNB", "0x0000000000000000000000000000000000000000", 1e18, accounts[2], "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48", 2e18);
-        transferInSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_IN_CHANNELID);
-        tx = await crossChain.handlePackage(transferInPackage, proof, merkleHeight, transferInSequence, TRANSFER_IN_CHANNELID, {from: relayer});
-        nestedEvents = (await truffleAssert.createTransactionResult(tokenHub, tx.tx)).logs;
-        assert.equal(nestedEvents.length, 1, "wrong event number");
-    });
-    it('BNB transfer to non-payable address', async () => {
-        const crossChain = await CrossChain.deployed();
-        const relayer = accounts[1];
-
-        const tendermintLightClient = await TendermintLightClient.deployed();
-        const transferInPackage = buildTransferInPackage("BNB", "0x0000000000000000000000000000000000000000", 1e18, tendermintLightClient.address, "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48");
-        const transferInSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_IN_CHANNELID);
-        const tx = await crossChain.handlePackage(transferInPackage, proof, merkleHeight, transferInSequence, TRANSFER_IN_CHANNELID, {from: relayer});
-        let event;
-        truffleAssert.eventEmitted(tx, "crossChainPackage",(ev) => {
-            let matched = false;
-            if (ev.packageSequence.toString() === "1") {
-                event = ev;
-                matched = true;
-            }
-            return matched;
-        });
-        let decoded = verifyPrefixAndExtractAckPackage(event.payload);
-        assert.equal(web3.utils.bytesToHex(decoded[0]), stringToBytes32("BNB"), "response should be empty");
-        assert.ok(web3.utils.bytesToHex(decoded[1]), web3.utils.toBN(1e8).toString(16), "response should be empty");
-        assert.equal(web3.utils.bytesToHex(decoded[2]), "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48", "response should be empty");
-        assert.equal(web3.utils.bytesToHex(decoded[3]), "0x04", "refund status should be non-payable recipient address");
-    });
-    it('Transfer from BSC to BC', async () => {
-        const crossChain = await CrossChain.deployed();
-        const tokenHub = await TokenHub.deployed();
-        const abcToken = await ABCToken.deployed();
-        const defToken = await DEFToken.deployed();
-
-        const sender = accounts[2];
-
-        let timestamp = Math.floor(Date.now() / 1000); // counted by second
-        let expireTime = timestamp + 150; // expire at two minutes later
-        const recipient = "0xd719dDfA57bb1489A08DF33BDE4D5BA0A9998C60";
-        let amount = web3.utils.toBN(1e18);
-        let relayFee = web3.utils.toBN(1e16);
-
-        try {
-            await tokenHub.transferOut(abcToken.address, recipient, amount, expireTime, {from: sender, value: relayFee});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("BEP20: transfer amount exceeds allowance"));
-        }
-
-        try {
-            const amount = web3.utils.toBN(1e8);
-            await tokenHub.transferOut(abcToken.address, recipient, amount, expireTime, {from: sender, value: relayFee});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("invalid transfer amount"));
-        }
-
-        try {
-            relayFee = web3.utils.toBN(1e16).add(web3.utils.toBN(1));
-            await tokenHub.transferOut(abcToken.address, recipient, amount, expireTime, {from: sender, value: relayFee});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("invalid received BNB amount: precision loss in amount conversion"));
-        }
-
-        try {
-            relayFee = web3.utils.toBN(1e14);
-            await tokenHub.transferOut(abcToken.address, recipient, amount, expireTime, {from: sender, value: relayFee});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("received BNB amount should be no less than the minimum relayFee"));
-        }
-
-        relayFee = web3.utils.toBN(1e16);
-        try {
-            await tokenHub.transferOut(defToken.address, recipient, amount, expireTime, {from: sender, value: relayFee});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("the contract has not been bound to any bep2 token"));
-        }
-
-        try {
-            amount = web3.utils.toBN(1e8);
-            await tokenHub.transferOut(abcToken.address, recipient, amount, expireTime, {from: sender, value: relayFee});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("invalid transfer amount: precision loss in amount conversion"));
-        }
-
-        amount = web3.utils.toBN(1e18);
-        await abcToken.approve(tokenHub.address, amount, {from: sender});
-        try {
-            await tokenHub.transferOut(abcToken.address, recipient, amount, expireTime, {from: sender});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("received BNB amount should be no less than the minimum relayFee"));
-        }
-        let tx = await tokenHub.transferOut(abcToken.address, recipient, amount, expireTime, {from: sender, value: relayFee});
-        truffleAssert.eventEmitted(tx, "transferOutSuccess",(ev) => {
-            return ev.amount.eq(web3.utils.toBN(amount)) && ev.bep20Addr.toString().toLowerCase() === abcToken.address.toLowerCase();
-        });
-
-        let nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        let decoded = verifyPrefixAndExtractSyncPackage(nestedEventValues.payload, 1e6);
-        assert.equal(web3.utils.bytesToHex(decoded[0]), stringToBytes32("ABC-9C7"), "wrong symbol");
-        assert.equal(web3.utils.bytesToHex(decoded[1]), abcToken.address.toLowerCase(), "wrong contract address");
-        assert.ok(web3.utils.toBN(web3.utils.bytesToHex(decoded[2][0])).eq(web3.utils.toBN(1e8)), "wrong transferOut amount");
-        assert.equal(web3.utils.bytesToHex(decoded[3][0]), recipient.toLowerCase(), "wrong recipient address");
-        assert.equal(web3.utils.bytesToHex(decoded[4][0]), sender.toLowerCase(), "wrong refund address");
-
-        let balance = await abcToken.balanceOf.call(accounts[2]);
-        assert.equal(balance.eq(web3.utils.toBN(155e17).sub(amount)), true, "wrong balance");
-    });
-    it('Relay refund package', async () => {
-        const tokenHub = await TokenHub.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const relayer = accounts[1];
-        const refundAddr = accounts[2];
-
-        const packageBytesPrefix = buildAckPackagePrefix(1e16);
-
-        const packageBytes = RLP.encode([
-            abcToken.address,           //bep20 contract address
-            [1e18],                    //amount
-            [refundAddr],               //refund address
-            1]);                        //status
-
-        let refundSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_OUT_CHANNELID);
-
-        const amount = web3.utils.toBN(1e18);
-        let balance = await abcToken.balanceOf.call(refundAddr);
-        assert.equal(balance.eq(web3.utils.toBN(155e17).sub(amount)), true, "wrong balance");
-
-        tx = await crossChain.handlePackage(Buffer.concat([packageBytesPrefix, packageBytes]), proof, merkleHeight, refundSequence, TRANSFER_OUT_CHANNELID, {from: relayer});
-        let nestedEventValues = (await truffleAssert.createTransactionResult(tokenHub, tx.tx)).logs[0].args;
-        assert.equal(nestedEventValues[0].toString().toLowerCase(), abcToken.address.toLowerCase(), "wrong refund contract address");
-
-        balance = await abcToken.balanceOf.call(refundAddr);
-        assert.equal(balance.eq(web3.utils.toBN(155e17)), true, "wrong balance");
-    });
-    it('Batch transfer out', async () => {
-        const tokenHub = await TokenHub.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const sender = accounts[0];
-
-        const recipientAddrs = ["0x37b8516a0f88e65d677229b402ec6c1e0e333004", "0xfa5e36a04eef3152092099f352ddbe88953bb540"];
-        let amounts = [web3.utils.toBN(5e9), web3.utils.toBN(5e9)];
-        const refundAddrs = ["0x37b8516a0f88e65d677229b402ec6c1e0e333004", "0xfa5e36a04eef3152092099f352ddbe88953bb540"];
-
-        let timestamp = Math.floor(Date.now() / 1000);
-        let expireTime = (timestamp + 150);
-
-        try {
-            await tokenHub.batchTransferOutBNB(recipientAddrs, amounts, refundAddrs, expireTime, {from: sender, value: web3.utils.toBN(2000002e10)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("invalid transfer amount: precision loss in amount conversion"));
-        }
-
-        amounts = [web3.utils.toBN(1e16), web3.utils.toBN(2e16)];
-        let tx = await tokenHub.batchTransferOutBNB(recipientAddrs, amounts, refundAddrs, expireTime, {from: sender, value: web3.utils.toBN(5e16)});
-        truffleAssert.eventEmitted(tx, "transferOutSuccess",(ev) => {
-            return ev.amount.eq(web3.utils.toBN(3e16)) && ev.bep20Addr.toString().toLowerCase() === "0x0000000000000000000000000000000000000000";
-        });
-        assert.equal(tx.receipt.status, true, "failed transaction");
-        let nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        let decoded = verifyPrefixAndExtractSyncPackage(nestedEventValues.payload, 2e6);
-        assert.equal(web3.utils.bytesToHex(decoded[0]), stringToBytes32("BNB"), "wrong symbol");
-        assert.equal(web3.utils.bytesToHex(decoded[1]), "0x0000000000000000000000000000000000000000", "wrong contract address");
-        assert.ok(web3.utils.toBN(web3.utils.bytesToHex(decoded[2][0])).eq(web3.utils.toBN(1e6)), "wrong transferOut amount");
-        assert.ok(web3.utils.toBN(web3.utils.bytesToHex(decoded[2][1])).eq(web3.utils.toBN(2e6)), "wrong transferOut amount");
-        assert.equal(web3.utils.bytesToHex(decoded[3][0]), recipientAddrs[0].toLowerCase(), "wrong recipient address");
-        assert.equal(web3.utils.bytesToHex(decoded[3][1]), recipientAddrs[1].toLowerCase(), "wrong recipient address");
-        assert.equal(web3.utils.bytesToHex(decoded[4][0]), refundAddrs[0].toLowerCase(), "wrong refund address");
-        assert.equal(web3.utils.bytesToHex(decoded[4][1]), refundAddrs[1].toLowerCase(), "wrong refund address");
-    });
-    it('Bind malicious BEP20 token', async () => {
-        const maliciousToken = await MaliciousToken.deployed();
-        const tokenManager = await TokenManager.deployed();
-        const tokenHub = await TokenHub.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const owner = accounts[0];
-        const relayer = accounts[1];
-
-        const bindPackage = buildBindPackage(0, "MALICIOU-A09", maliciousToken.address, 1e8, 99e6, 18);
-        let bindSequence = await crossChain.channelReceiveSequenceMap.call(BIND_CHANNEL_ID);
-
-        let tx = await crossChain.handlePackage(bindPackage, proof, merkleHeight, bindSequence, BIND_CHANNEL_ID, {from: relayer});
-        assert.equal(tx.receipt.status, true, "failed transaction");
-
-        await maliciousToken.approve(tokenManager.address, web3.utils.toBN('1000000000000000000000000'), {from: owner});
-        await tokenManager.approveBind(maliciousToken.address, "MALICIOU-A09", {from: owner, value: 1e16});
-
-        const bep2Symbol = await tokenHub.getBoundBep2Symbol.call(maliciousToken.address);
-        assert.equal(bep2Symbol, "MALICIOU-A09", "wrong symbol");
-
-        const transferInPackage = buildTransferInPackage("MALICIOU-A09", maliciousToken.address, 155e17, accounts[2], "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48");
-        let transferInSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_IN_CHANNELID);
-
-        let balance = await maliciousToken.balanceOf.call(accounts[2]);
-        assert.equal(balance.toNumber(), 0, "wrong balance");
-
-        tx = await crossChain.handlePackage(transferInPackage, proof, merkleHeight, transferInSequence, TRANSFER_IN_CHANNELID, {from: relayer});
-        assert.equal(tx.receipt.status, true, "failed transaction");
-
-        let newTransferInSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_IN_CHANNELID);
-        assert.equal(newTransferInSequence.toNumber(), transferInSequence.toNumber()+1, "wrong transferIn sequence");
-
-        packageBytesPrefix = Buffer.from(web3.utils.hexToBytes(
-            "0x01" +
-            "0000000000000000000000000000000000000000000000000000000000000000"
-        ));
-
-        packageBytes = RLP.encode([
-            maliciousToken.address,                                                 //bep2TokenSymbol
-            ["0x000000000000000000000000000000000000000000000000000000174876E800"], //amount
-            ["0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48"],                         //refund address
-            1]);                                                                    //refund address
-        let refundSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_OUT_CHANNELID);
-
-        tx = await crossChain.handlePackage(Buffer.concat([packageBytesPrefix, packageBytes]), proof, merkleHeight, refundSequence, TRANSFER_OUT_CHANNELID, {from: relayer});
-        assert.equal(tx.receipt.status, true, "failed transaction");
-
-        let newRefundSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_OUT_CHANNELID);
-        assert.equal(newRefundSequence.toNumber(), refundSequence.toNumber()+1, "wrong transferIn sequence");
-    });
-    it('Uint256 overflow in transferOut and batchTransferOutBNB', async () => {
-        const tokenHub = await TokenHub.deployed();
-
-        const sender = accounts[2];
-
-        let timestamp = Math.floor(Date.now() / 1000); // counted by second
-        let expireTime = timestamp + 150; // expire at two minutes later
-        let recipient = "0xd719dDfA57bb1489A08DF33BDE4D5BA0A9998C60";
-        let amount = web3.utils.toBN("115792089237316195423570985008687907853269984665640564039457584007903129639936");
-
-        try {
-            await tokenHub.transferOut("0x0000000000000000000000000000000000000000", recipient, amount, expireTime, {from: sender, value: web3.utils.toBN("9999990000000000")});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("SafeMath: addition overflow"));
-        }
-
-        const recipientAddrs = ["0x37b8516a0f88e65d677229b402ec6c1e0e333004", "0xfa5e36a04eef3152092099f352ddbe88953bb540"];
-        let amounts = [web3.utils.toBN("100000000000000000000000000000000000000000000000000000000000000000000000000000"), web3.utils.toBN("15792089237316195423570985008687907853269984665640564039457584007910000000000")];
-        const refundAddrs = ["0x37b8516a0f88e65d677229b402ec6c1e0e333004", "0xfa5e36a04eef3152092099f352ddbe88953bb540"];
-
-        timestamp = Math.floor(Date.now() / 1000);
-        expireTime = (timestamp + 150);
-
-        try {
-            await tokenHub.batchTransferOutBNB(recipientAddrs, amounts, refundAddrs, expireTime, {from: sender, value: web3.utils.toBN("9999990000000000")});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("SafeMath: addition overflow"));
-        }
-    });
-    it('fail ack for transfer out', async () => {
-        const tokenHub = await TokenHub.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-        const relayer = accounts[1];
-
-        let initBalance3 = await abcToken.balanceOf.call(accounts[3]);
-        let initBalance4 = await abcToken.balanceOf.call(accounts[4]);
-
-        packageBytesPrefix = Buffer.from(web3.utils.hexToBytes(
-            "0x02" +
-            "0000000000000000000000000000000000000000000000000000000000000000"
-        ));
-
-        packageBytes = RLP.encode([
-            stringToBytes32("ABC-9C7"),
-            abcToken.address,
-            [1e6, 2e6],
-            ["0x37B8516a0F88E65D677229b402ec6C1e0E333004", "0xfA5E36a04EeF3152092099F352DDbe88953bB540"],
-            [accounts[3], accounts[4]],
-            Math.floor(Date.now() / 1000)
-        ]);
-        let refundSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_OUT_CHANNELID);
-
-        await crossChain.handlePackage(Buffer.concat([packageBytesPrefix, packageBytes]), proof, merkleHeight, refundSequence, TRANSFER_OUT_CHANNELID, {from: relayer});
-
-        let newBalance3 = await abcToken.balanceOf.call(accounts[3]);
-        let newBalance4 = await abcToken.balanceOf.call(accounts[4]);
-
-        assert.equal(newBalance3.sub(initBalance3).eq(web3.utils.toBN(1e16)), true, "wrong balance");
-        assert.equal(newBalance4.sub(initBalance4).eq(web3.utils.toBN(2e16)), true, "wrong balance");
-    });
-    it('Unbind Token', async () => {
-        const tokenHub = await TokenHub.deployed();
-        const abcToken = await ABCToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const relayer = accounts[1];
-
-        const bindPackage = buildBindPackage(1, "ABC-9C7", abcToken.address, 0, 0, 0);
-        let bindSequence = await crossChain.channelReceiveSequenceMap.call(BIND_CHANNEL_ID);
-
-        let tx = await crossChain.handlePackage(bindPackage, proof, merkleHeight, bindSequence, BIND_CHANNEL_ID, {from: relayer});
-        assert.equal(tx.receipt.status, true, "failed transaction");
-
-        const bep2Symbol = await tokenHub.getBoundBep2Symbol.call(abcToken.address);
-        assert.equal(bep2Symbol, "", "wrong symbol");
-        const contractAddr = await tokenHub.getBoundContract.call("ABC-9C7");
-        assert.equal(contractAddr, "0x0000000000000000000000000000000000000000", "wrong contract addr");
-
-
-        const transferInPackage = buildTransferInPackage("ABC-9C7", abcToken.address, 1e18, accounts[2], "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48");
-        let transferInSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_IN_CHANNELID);
-
-        tx = await crossChain.handlePackage(transferInPackage, proof, merkleHeight, transferInSequence, TRANSFER_IN_CHANNELID, {from: relayer});
-        assert.equal(tx.receipt.status, true, "failed transaction");
-
-        // refund should be successful
-        const refundAddr = accounts[2];
-        packageBytesPrefix = Buffer.from(web3.utils.hexToBytes(
-            "0x01" +
-            "0000000000000000000000000000000000000000000000000000000000000000"
-        ));
-        packageBytes = RLP.encode([
-            abcToken.address,                                                       //bep2TokenSymbol
-            ["0x0000000000000000000000000000000000000000000000000DE0B6B3A7640000"], //amount
-            [refundAddr],                                                           //refund address
-            1]);                                                                    //refund address
-
-        let refundSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_OUT_CHANNELID);
-
-        let beforeRefundBalance = await abcToken.balanceOf.call(refundAddr);
-
-        tx = await crossChain.handlePackage(Buffer.concat([packageBytesPrefix, packageBytes]), proof, merkleHeight, refundSequence, TRANSFER_OUT_CHANNELID, {from: relayer});
-        assert.equal(tx.receipt.status, true, "failed transaction");
-        let nestedEventValues = (await truffleAssert.createTransactionResult(tokenHub, tx.tx)).logs[0].args;
-        assert.equal(nestedEventValues[0].toString().toLowerCase(), abcToken.address.toLowerCase(), "wrong refund contract address");
-        assert.equal(nestedEventValues[1].toString().toLowerCase(), refundAddr.toLowerCase(), "wrong refund address");
-
-        let afterRefundBalance = await abcToken.balanceOf.call(refundAddr);
-        assert.equal(afterRefundBalance.sub(beforeRefundBalance).eq(web3.utils.toBN(1e18)), true, "wrong balance");
-
-        // transferOut should be failed
-        const sender = accounts[2];
-        timestamp = Math.floor(Date.now() / 1000); // counted by second
-        let expireTime = timestamp + 150; // expire at two minutes later
-        const recipient = "0xd719dDfA57bb1489A08DF33BDE4D5BA0A9998C60";
-        const amount = web3.utils.toBN(1e11);
-        const relayFee = web3.utils.toBN(2e16);
-        await abcToken.approve(tokenHub.address, amount, {from: sender});
-        try {
-            await tokenHub.transferOut(abcToken.address, recipient, amount, expireTime, {from: sender, value: relayFee});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("the contract has not been bound to any bep2 token"));
-        }
-    });
-    it('bind and transfer miniToken', async () => {
-        const tokenManager = await TokenManager.deployed();
-        const tokenHub = await TokenHub.deployed();
-        const miniToken = await MiniToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const owner = accounts[0];
-        const relayer = accounts[1];
-
-        const bindPackage = buildBindPackage(0, "XYZ-9C7M", miniToken.address, 1e4, 5e3, 18);
-        let bindSequence = await crossChain.channelReceiveSequenceMap.call(BIND_CHANNEL_ID);
-
-        await crossChain.handlePackage(bindPackage, proof, merkleHeight, bindSequence, BIND_CHANNEL_ID, {from: relayer});
-
-        await miniToken.approve(tokenManager.address, web3.utils.toBN(1e18).mul(web3.utils.toBN(5e3)), {from: owner});
-        let tx = await tokenManager.approveBind(miniToken.address, "XYZ-9C7M", {from: owner, value: 1e16});
-
-        let nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        decoded = verifyPrefixAndExtractSyncPackage(nestedEventValues.payload, 1e6);
-        assert.equal(web3.utils.bytesToHex(decoded[0]), "0x", "bind status should be successful");
-        assert.equal(web3.utils.bytesToHex(decoded[1]), stringToBytes32("XYZ-9C7M"), "wrong bep2TokenSymbol");
-
-        const bep2Symbol = await tokenHub.getBoundBep2Symbol.call(miniToken.address);
-        assert.equal(bep2Symbol, "XYZ-9C7M", "wrong symbol");
-        const contractAddr = await tokenHub.getBoundContract.call("XYZ-9C7M");
-        assert.equal(contractAddr, miniToken.address, "wrong contract addr");
-
-        let amount = web3.utils.toBN(1e18);
-        let recipient = accounts[3];
-        await miniToken.approve(tokenHub.address, amount, {from: owner});
-        let timestamp = Math.floor(Date.now() / 1000); // counted by second
-        let expireTime = (timestamp + 300);
-        const relayFee = web3.utils.toBN(1e16);
-        tx = await tokenHub.transferOut(miniToken.address, recipient, amount, expireTime, {from: owner, value: relayFee});
-        truffleAssert.eventEmitted(tx, "transferOutSuccess",(ev) => {
-            return ev.amount.eq(web3.utils.toBN(amount)) && ev.bep20Addr.toString().toLowerCase() === miniToken.address.toLowerCase();
-        });
-        amount = web3.utils.toBN(5e17);
-        await miniToken.approve(tokenHub.address, amount, {from: owner});
-        timestamp = Math.floor(Date.now() / 1000); // counted by second
-        expireTime = (timestamp + 300);
-        try {
-            await tokenHub.transferOut(miniToken.address, recipient, amount, expireTime, {from: owner, value: relayFee});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("For miniToken, the transfer amount must not be less than 1"));
-        }
-
-        amount = web3.utils.toBN(1e18);
-        const transferInPackage = buildTransferInPackage("XYZ-9C7M", miniToken.address, amount, accounts[2], "0x35d9d41a13d6c2e01c9b1e242baf2df98e7e8c48");
-        let transferInSequence = await crossChain.channelReceiveSequenceMap.call(TRANSFER_IN_CHANNELID);
-
-        const initBalance = await miniToken.balanceOf.call(accounts[2]);
-        await crossChain.handlePackage(transferInPackage, proof, merkleHeight, transferInSequence, TRANSFER_IN_CHANNELID, {from: relayer});
-        const newBalance = await miniToken.balanceOf.call(accounts[2]);
-        assert.equal(newBalance.sub(initBalance).eq(amount), true, "wrong balance");
-    });
-    it('enable mirror and sync channel', async () => {
-        const tokenManager = await TokenManager.deployed();
-        const tokenHub = await TokenHub.deployed();
-        const xyzToken = await XYZToken.deployed();
-        const crossChain = await CrossChain.deployed();
-        const govHub = await GovHub.deployed();
-
-        await govHub.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address, TokenHub.address, RelayerIncentivize.address, RelayerHub.address, GovHub.address, TokenManager.address, CrossChain.address);
-
-        const owner = accounts[0];
-        const relayer = accounts[1];
-        const player = accounts[2];
-
-        const tokenMgrAddrStr = TokenManager.address.toString().replace("0x", "");
-        let govChannelSeq = await crossChain.channelReceiveSequenceMap(GOV_CHANNEL_ID);
-        let govValue = "0x04" + "01" + tokenMgrAddrStr;
-        let govPackageBytes = serialize("addOrUpdateChannel", govValue, CrossChain.address);
-        await crossChain.handlePackage(Buffer.concat([buildSyncPackagePrefix(2e16), (govPackageBytes)]), proof, merkleHeight, govChannelSeq, GOV_CHANNEL_ID, {from: relayer});
-
-        govChannelSeq = await crossChain.channelReceiveSequenceMap(GOV_CHANNEL_ID);
-        govValue = "0x05" + "01" + tokenMgrAddrStr;
-        govPackageBytes = serialize("addOrUpdateChannel", govValue, CrossChain.address);
-        await crossChain.handlePackage(Buffer.concat([buildSyncPackagePrefix(2e16), (govPackageBytes)]), proof, merkleHeight, govChannelSeq, GOV_CHANNEL_ID, {from: relayer});
-
-        govChannelSeq = await crossChain.channelReceiveSequenceMap(GOV_CHANNEL_ID);
-        govValue = "0x0000000000000000000000000000000000000000000000056bc75e2d63100000";// 1e20;
-        govPackageBytes = serialize("mirrorFee", govValue, TokenManager.address);
-        await crossChain.handlePackage(Buffer.concat([buildSyncPackagePrefix(2e16), (govPackageBytes)]), proof, merkleHeight, govChannelSeq, GOV_CHANNEL_ID, {from: relayer});
-
-        govChannelSeq = await crossChain.channelReceiveSequenceMap(GOV_CHANNEL_ID);
-        govValue = "0x0000000000000000000000000000000000000000000000008ac7230489e80000"; // 1e19
-        govPackageBytes = serialize("syncFee", govValue, TokenManager.address);
-        await crossChain.handlePackage(Buffer.concat([buildSyncPackagePrefix(2e16), (govPackageBytes)]), proof, merkleHeight, govChannelSeq, GOV_CHANNEL_ID, {from: relayer});
-
-        const mirrorFee = await tokenManager.mirrorFee();
-        assert.equal(web3.utils.toBN(1e20).eq(mirrorFee), true, "Wrong mirrorFee");
-        const syncFee = await tokenManager.syncFee();
-        assert.equal(web3.utils.toBN(1e19).eq(syncFee), true, "Wrong syncFee");
-
-        await govHub.updateContractAddr(BSCValidatorSet.address, SlashIndicator.address, SystemReward.address, MockLightClient.address, TokenHub.address, RelayerIncentivize.address, RelayerHub.address, GovHub.address, TokenManager.address, accounts[8]);
-    });
-    it('iterate mirror failures', async () => {
-        const tokenManager = await TokenManager.deployed();
-        const tokenHub = await TokenHub.deployed();
-        const miniToken = await MiniToken.deployed();
-        const xyzToken = await XYZToken.deployed();
-        const crossChain = await CrossChain.deployed();
-        const miniRelayFee = await tokenHub.getMiniRelayFee();
-        const mirrorFee = await tokenManager.mirrorFee();
-        const xyzTokenOwner = accounts[0];
-        const relayer = accounts[1];
-        const player = accounts[2];
-
-        try {
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(miniToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("already bound"));
-        }
-
-        try {
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 100; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("expireTime must be two minutes later and one day earlier"));
-        }
-
-        try {
-            await xyzToken.setName("", {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("name length must be in [1,32]"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ TokenXYZ TokenXYZ TokenXYZ Token", {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("name length must be in [1,32]"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("X", {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("symbol length must be in [2,8]"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("XYZXYZXYZ", {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("symbol length must be in [2,8]"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("X-Z", {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("symbol should only contain alphabet and number"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("XY_Z", {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("symbol should only contain alphabet and number"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("XYZ", {from: xyzTokenOwner});
-            await xyzToken.setDecimals(1, {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("too large total supply"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("XYZ", {from: xyzTokenOwner});
-            await xyzToken.setDecimals(86, {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("too large decimals"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("XYZ", {from: xyzTokenOwner});
-            await xyzToken.setDecimals(18, {from: xyzTokenOwner});
-            await xyzToken.setTotalSupply(web3.utils.toBN(1e18).mul(web3.utils.toBN(1e18)), {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("too large total supply"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("XYZ", {from: xyzTokenOwner});
-            await xyzToken.setDecimals(18, {from: xyzTokenOwner});
-            await xyzToken.setTotalSupply(web3.utils.toBN(1e18).mul(web3.utils.toBN(1e8)), {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee).add(web3.utils.toBN(1e9))});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("msg.value must be N * 1e10 and greater than sum of miniRelayFee and mirrorFee"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("XYZ", {from: xyzTokenOwner});
-            await xyzToken.setDecimals(18, {from: xyzTokenOwner});
-            await xyzToken.setTotalSupply(web3.utils.toBN(1e18).mul(web3.utils.toBN(1e8)), {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee).sub(web3.utils.toBN(1e9))});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("msg.value must be N * 1e10 and greater than sum of miniRelayFee and mirrorFee"));
-        }
-
-        try {
-            await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-            await xyzToken.setSymbol("XYZ", {from: xyzTokenOwner});
-            await xyzToken.setDecimals(18, {from: xyzTokenOwner});
-            await xyzToken.setTotalSupply(web3.utils.toBN(1e18).mul(web3.utils.toBN(1e8)), {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            const tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-            assert.equal(web3.utils.toBN(tokenManagerBalance).eq(mirrorFee), true, "wrong tokenManager balance");
-            await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("mirror pending"));
-            const mirrorChannelSeq = await crossChain.channelReceiveSequenceMap(MIRROR_CHANNELID);
-            const mirrorAckPackageBytes = buildMirrorAckPackage(player, xyzToken.address, 18, "", mirrorFee, 1);
-            await crossChain.handlePackage(mirrorAckPackageBytes, proof, merkleHeight, mirrorChannelSeq, MIRROR_CHANNELID, {from: relayer});
-            const tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-            assert.equal(web3.utils.toBN(tokenManagerBalance).eq(web3.utils.toBN(0)), true, "wrong tokenManager balance");
-        }
-
-    });
-    it('successful mirror', async () => {
-        const tokenManager = await TokenManager.deployed();
-        const tokenHub = await TokenHub.deployed();
-        const xyzToken = await XYZToken.deployed();
-        const crossChain = await CrossChain.deployed();
-
-        const xyzTokenOwner = accounts[0];
-        const relayer = accounts[1];
-        const player = accounts[2];
-
-        await xyzToken.setName("XYZ Token", {from: xyzTokenOwner});
-        await xyzToken.setSymbol("XYZ", {from: xyzTokenOwner});
-        await xyzToken.setDecimals(18, {from: xyzTokenOwner});
-        await xyzToken.setTotalSupply(web3.utils.toBN(1e18).mul(web3.utils.toBN(1e8)), {from: xyzTokenOwner});
-
-        const miniRelayFee = await tokenHub.getMiniRelayFee();
-        const xyzTokenTotalSupply = await xyzToken.totalSupply();
-        const xyzTokenDecimals = await xyzToken.decimals();
-        const xyzTokenName = await xyzToken.name();
-        const xyzTokenSymbol = await xyzToken.symbol();
-
-        const mirrorFee = await tokenManager.mirrorFee();
-        const syncFee = await tokenManager.syncFee();
-
-        let timestamp = Math.floor(Date.now() / 1000); // counted by second
-        let expireTime = timestamp + 300; // expire at five minutes later
-        let tx = await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-        let nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        let decodedMirrorSynPackage = decodeMirrorSynPackage(nestedEventValues.payload);
-        assert.equal(decodedMirrorSynPackage.mirrorSender.toLowerCase(), player.toLowerCase(), "Wrong mirror sender in mirror sync package");
-        assert.equal(decodedMirrorSynPackage.bep20Addr.toLowerCase(), XYZToken.address.toLowerCase(), "Wrong bep20 address in mirror sync package");
-        assert.equal(decodedMirrorSynPackage.bep20Name, stringToBytes32(xyzTokenName), "Wrong bep20 name in mirror sync package"); // name: XYZ Token
-        assert.equal(decodedMirrorSynPackage.bep20Symbol, stringToBytes32(xyzTokenSymbol), "Wrong bep20 symbol in mirror sync package"); // symbol: XYZ
-        assert.equal(web3.utils.toBN(decodedMirrorSynPackage.mirrorFee).mul(web3.utils.toBN(1e10)).eq(mirrorFee), true, "Wrong mirrorFee in mirror sync package");
-        assert.equal(web3.utils.hexToNumber(decodedMirrorSynPackage.bep20Decimals), xyzTokenDecimals, "Wrong decimals in mirror sync package");
-        assert.equal(web3.utils.toBN(decodedMirrorSynPackage.bep20Supply).eq(xyzTokenTotalSupply), true, "Wrong total supply in mirror sync package");
-        let tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-        assert.equal(web3.utils.toBN(tokenManagerBalance).eq(mirrorFee), true, "wrong tokenManager balance");
-
-        // mirror fail ack
-        let mirrorChannelSeq = await crossChain.channelReceiveSequenceMap(MIRROR_CHANNELID);
-        const mirrorFailAckPackageBytes = Buffer.from(web3.utils.hexToBytes(nestedEventValues.payload));
-        await crossChain.handlePackage(Buffer.concat([buildFailAckPackagePrefix(), mirrorFailAckPackageBytes.subarray(33, mirrorFailAckPackageBytes.length)]), proof, merkleHeight, mirrorChannelSeq, MIRROR_CHANNELID, {from: relayer});
-        tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-        assert.equal(web3.utils.toBN(tokenManagerBalance).eq(web3.utils.toBN(0)), true, "wrong tokenManager balance");
-
-        // success mirror
-        timestamp = Math.floor(Date.now() / 1000); // counted by second
-        expireTime = timestamp + 300; // expire at five minutes later
-        tx = await tokenManager.mirror(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-        tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-        assert.equal(web3.utils.toBN(tokenManagerBalance).eq(mirrorFee), true, "wrong tokenManager balance");
-
-        mirrorChannelSeq = await crossChain.channelReceiveSequenceMap(MIRROR_CHANNELID);
-        const mirrorAckPackageBytes = buildMirrorAckPackage(player, xyzToken.address, 18, "XYZ-123", mirrorFee, 0);
-        await crossChain.handlePackage(mirrorAckPackageBytes, proof, merkleHeight, mirrorChannelSeq, MIRROR_CHANNELID, {from: relayer});
-
-        tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-        assert.equal(web3.utils.toBN(tokenManagerBalance).eq(web3.utils.toBN(0)), true, "wrong tokenManager balance");
-
-        const bep2Symbol = await tokenHub.getBoundBep2Symbol.call(xyzToken.address);
-        assert.equal(bep2Symbol, "XYZ-123", "wrong symbol");
-
-
-        await xyzToken.mint(web3.utils.toBN(1e18).mul(web3.utils.toBN(1e8)), {from: xyzTokenOwner});
-        const xyzTokenNewTotalSupply = await xyzToken.totalSupply();
-
-        timestamp = Math.floor(Date.now() / 1000); // counted by second
-        expireTime = timestamp + 300; // expire at five minutes later
-        tx = await tokenManager.sync(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(syncFee)});
-        nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        let decodedSyncSynPackage = decodeSyncSynPackage(nestedEventValues.payload);
-        assert.equal(decodedSyncSynPackage.syncSender.toLowerCase(), player.toLowerCase(), "Wrong mirror sender in sync syn package");
-        assert.equal(decodedSyncSynPackage.bep20Addr.toLowerCase(), XYZToken.address.toLowerCase(), "Wrong bep20 address in sync syn package");
-        assert.equal(web3.utils.toBN(decodedSyncSynPackage.bep20Supply).eq(xyzTokenNewTotalSupply), true, "Wrong total supply in sync syn package");
-        assert.equal(web3.utils.toBN(decodedSyncSynPackage.syncFee).mul(web3.utils.toBN(1e10)).eq(syncFee), true, "Wrong mirrorFee in sync syn package");
-        tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-        assert.equal(web3.utils.toBN(tokenManagerBalance).eq(syncFee), true, "wrong tokenManager balance");
-
-        // sync fail ack package
-        let syncChannelSeq = await crossChain.channelReceiveSequenceMap(SYNC_CHANNELID);
-        const syncFailAckPackageBytes = Buffer.from(web3.utils.hexToBytes(nestedEventValues.payload));
-        await crossChain.handlePackage(Buffer.concat([buildFailAckPackagePrefix(), syncFailAckPackageBytes.subarray(33, syncFailAckPackageBytes.length)]), proof, merkleHeight, syncChannelSeq, SYNC_CHANNELID, {from: relayer});
-        tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-        assert.equal(web3.utils.toBN(tokenManagerBalance).eq(web3.utils.toBN(0)), true, "wrong tokenManager balance");
-
-        // success sync and sync ack
-        timestamp = Math.floor(Date.now() / 1000); // counted by second
-        expireTime = timestamp + 300; // expire at five minutes later
-        await tokenManager.sync(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(syncFee)});
-        tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-        assert.equal(web3.utils.toBN(tokenManagerBalance).eq(syncFee), true, "wrong tokenManager balance");
-
-        syncChannelSeq = await crossChain.channelReceiveSequenceMap(SYNC_CHANNELID);
-        await crossChain.handlePackage(buildSyncAckPackage(player, xyzToken.address, syncFee, 0), proof, merkleHeight, syncChannelSeq, SYNC_CHANNELID, {from: relayer});
-        tokenManagerBalance = await web3.eth.getBalance(tokenManager.address);
-        assert.equal(web3.utils.toBN(tokenManagerBalance).eq(web3.utils.toBN(0)), true, "wrong tokenManager balance");
-    });
-    it('iterate sync failures', async () => {
-        const tokenManager = await TokenManager.deployed();
-        const tokenHub = await TokenHub.deployed();
-        const miniToken = await MiniToken.deployed();
-        const defToken = await DEFToken.deployed();
-        const xyzToken = await XYZToken.deployed();
-        const crossChain = await CrossChain.deployed();
-        const miniRelayFee = await tokenHub.getMiniRelayFee();
-        const mirrorFee = await tokenManager.mirrorFee();
-        const xyzTokenOwner = accounts[0];
-        const relayer = accounts[1];
-        const player = accounts[2];
-
-        const syncFee = await tokenManager.syncFee();
-
-        try {
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.sync(defToken.address, expireTime, {
-                from: player,
-                value: miniRelayFee.add(syncFee)
-            });
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("not bound"));
-        }
-
-        try {
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.sync(miniToken.address, expireTime, {
-                from: player,
-                value: miniRelayFee.add(syncFee)
-            });
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("not bound by mirror"));
-        }
-
-        try {
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 100; // expire at five minutes later
-            await tokenManager.sync(xyzToken.address, expireTime, {
-                from: player,
-                value: miniRelayFee.add(syncFee)
-            });
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("expireTime must be two minutes later and one day earlier"));
-        }
-
-        try {
-            await xyzToken.setTotalSupply(web3.utils.toBN(1e18).mul(web3.utils.toBN(1e18)), {from: xyzTokenOwner});
-
-            let timestamp = Math.floor(Date.now() / 1000); // counted by second
-            let expireTime = timestamp + 300; // expire at five minutes later
-            await tokenManager.sync(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(mirrorFee)});
-            assert.fail();
-        } catch (error) {
-            assert.ok(error.toString().includes("too large total supply"));
-        }
-
-        await xyzToken.setTotalSupply(web3.utils.toBN(1e18).mul(web3.utils.toBN(1e8)), {from: xyzTokenOwner});
-        const xyzTokenNewTotalSupply = await xyzToken.totalSupply();
-
-        timestamp = Math.floor(Date.now() / 1000); // counted by second
-        expireTime = timestamp + 300; // expire at five minutes later
-        tx = await tokenManager.sync(xyzToken.address, expireTime, {from: player, value: miniRelayFee.add(syncFee)});
-        nestedEventValues = (await truffleAssert.createTransactionResult(crossChain, tx.tx)).logs[0].args;
-        let decodedSyncSynPackage = decodeSyncSynPackage(nestedEventValues.payload);
-        assert.equal(web3.utils.toBN(decodedSyncSynPackage.bep20Supply).eq(xyzTokenNewTotalSupply), true, "Wrong total supply in sync syn package");
-    });
-});
diff --git a/test/TokenHub.t.sol b/test/TokenHub.t.sol
new file mode 100644
index 00000000..7947fd7c
--- /dev/null
+++ b/test/TokenHub.t.sol
@@ -0,0 +1,765 @@
+pragma solidity ^0.8.10;
+
+import "../lib/Deployer.sol";
+import "../lib/interface/IABCToken.sol";
+import "../lib/interface/IDEFToken.sol";
+import "../lib/interface/IXYZToken.sol";
+import "../lib/interface/IMaliciousToken.sol";
+import "../lib/interface/IMiniToken.sol";
+
+contract TokenHubTest is Deployer {
+  using RLPEncode for *;
+  using RLPDecode for *;
+
+  event bindFailure(address indexed contractAddr, string bep2Symbol, uint32 failedReason);
+  event bindSuccess(address indexed contractAddr, string bep2Symbol, uint256 totalSupply, uint256 peggyAmount);
+  event mirrorFailure(address indexed bep20Addr, uint8 errCode);
+  event mirrorSuccess(address indexed bep20Addr, bytes32 bep2Symbol);
+  event syncFailure(address indexed bep20Addr, uint8 errCode);
+  event syncSuccess(address indexed bep20Addr);
+  event transferInSuccess(address bep20Addr, address refundAddr, uint256 amount);
+  event transferOutSuccess(address bep20Addr, address senderAddr, uint256 amount, uint256 relayFee);
+  event refundSuccess(address bep20Addr, address refundAddr, uint256 amount, uint32 status);
+  event refundFailure(address bep20Addr, address refundAddr, uint256 amount, uint32 status);
+  event rewardTo(address to, uint256 amount);
+  event receiveDeposit(address from, uint256 amount);
+  event unexpectedPackage(uint8 channelId, bytes msgBytes);
+  event paramChange(string key, bytes value);
+  event crossChainPackage();
+
+  ABCToken public abcToken;
+  DEFToken public defToken;
+  XYZToken public xyzToken;
+  MaliciousToken public maliciousToken;
+  MiniToken public miniToken;
+
+  receive() external payable {}
+
+  function setUp() public {
+    address abcAddr = deployCode("ABCToken.sol");
+    abcToken = ABCToken(abcAddr);
+    vm.label(abcAddr, "ABCToken");
+
+    address defAddr = deployCode("DEFToken.sol");
+    defToken = DEFToken(defAddr);
+    vm.label(defAddr, "DEFToken");
+
+    address xyzAddr = deployCode("XYZToken.sol");
+    xyzToken = XYZToken(xyzAddr);
+    vm.label(xyzAddr, "XYZToken");
+
+    address maliciousAddr = deployCode("MaliciousToken.sol");
+    maliciousToken = MaliciousToken(maliciousAddr);
+    vm.label(maliciousAddr, "MaliciousToken");
+
+    address miniAddr = deployCode("MiniToken.sol");
+    miniToken = MiniToken(miniAddr);
+    vm.label(miniAddr, "MiniToken");
+  }
+
+  function testBindFailed() public {
+    bytes memory pack = buildBindPackage(uint8(0), bytes32("ABC-9C7"), address(abcToken), 1e8, 99e6, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+
+    (, bytes32 symbol, address addr, uint256 totalSupply, uint256 peggyAmount, uint8 decimal,) = tokenManager.bindPackageRecord(bytes32("ABC-9C7"));
+    assertEq(symbol, bytes32("ABC-9C7"), "wrong symbol");
+    assertEq(addr, address(abcToken), "wrong token address");
+    assertEq(totalSupply, 1e8 * 1e18, "wrong total supply");
+    assertEq(peggyAmount, 99e6 * 1e18, "wrong peggy amount");
+    assertEq(decimal, 18);
+
+    uint256 lockAmount = tokenManager.queryRequiredLockAmountForBind("ABC-9C7");
+    assertEq(lockAmount, 1e6 * 1e18, "wrong lock amount");
+
+    vm.startPrank(relayer);
+    vm.expectRevert(bytes("only bep20 owner can approve this bind request"));
+    tokenManager.approveBind(address(abcToken), "ABC-9C7");
+
+    vm.expectRevert(bytes("contact address doesn't equal to the contract address in bind request"));
+    tokenManager.approveBind(address(0), "ABC-9C7");
+    vm.stopPrank();
+
+    vm.expectRevert(bytes("allowance is not enough"));
+    tokenManager.approveBind(address(abcToken), "ABC-9C7");
+
+    // Bind expired
+    abcToken.approve(address(tokenManager), 1e6 * 1e18);
+    vm.warp(block.timestamp + 5);
+    vm.expectEmit(true, false, false, true, address(tokenManager));
+    emit bindFailure(address(abcToken), "ABC-9C7", 1);
+    tokenManager.approveBind{value: 1e16}(address(abcToken), "ABC-9C7");
+
+    pack = buildBindPackage(uint8(0), bytes32("DEF-9C7"), address(abcToken), 1e8, 99e6, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+
+    abcToken.approve(address(tokenManager), 1e6 * 1e18);
+    vm.expectEmit(true, false, false, true, address(tokenManager));
+    emit bindFailure(address(abcToken), "DEF-9C7", 2);
+    tokenManager.approveBind{value: 1e16}(address(abcToken), "DEF-9C7");
+  }
+
+  function testRejectAndExpireBind() public {
+    bytes memory pack = buildBindPackage(uint8(0), bytes32("ABC-9C7"), address(abcToken), 1e8, 99e6, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+
+    vm.prank(relayer);
+    vm.expectRevert(bytes("only bep20 owner can reject"));
+    tokenManager.rejectBind{value: 1e16}(address(abcToken), "ABC-9C7");
+
+    vm.expectEmit(true, false, false, true, address(tokenManager));
+    emit bindFailure(address(abcToken), "ABC-9C7", 7);
+    tokenManager.rejectBind{value: 1e16}(address(abcToken), "ABC-9C7");
+
+    pack = buildBindPackage(uint8(0), bytes32("ABC-9C7"), address(abcToken), 1e8, 99e6, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+
+    vm.prank(relayer);
+    vm.expectRevert(bytes("bind request is not expired"));
+    tokenManager.expireBind{value: 1e16}("ABC-9C7");
+
+    vm.warp(block.timestamp + 5);
+    vm.expectEmit(true, false, false, true, address(tokenManager));
+    emit bindFailure(address(abcToken), "ABC-9C7", 1);
+    tokenManager.expireBind{value: 1e16}("ABC-9C7");
+  }
+
+  function testBindMaliciousToken() public {
+    bytes memory pack = buildBindPackage(uint8(0), bytes32("MALICIOU-A09"), address(maliciousToken), 1e8, 99e6, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+
+    maliciousToken.approve(address(tokenManager), 1e8 * 1e18);
+    tokenManager.approveBind{value: 1e16}(address(maliciousToken), "MALICIOU-A09");
+    string memory bep2Symbol = tokenHub.getBoundBep2Symbol(address(maliciousToken));
+    assertEq(bep2Symbol, "MALICIOU-A09", "wrong bep2 token symbol");
+
+    address recipient = addrSet[addrIdx++];
+    address refundAddr = addrSet[addrIdx++];
+    uint256 amount = 115e17;
+    assertEq(maliciousToken.balanceOf(recipient), 0);
+    pack = buildTransferInPackage(bytes32("MALICIOU-A09"), address(maliciousToken), amount, recipient, refundAddr);
+    vm.prank(address(crossChain));
+    vm.expectRevert(bytes("malicious method"));
+    tokenHub.handleSynPackage(TRANSFER_IN_CHANNELID, pack);
+
+    // refund
+    bytes[] memory elements = new bytes[](4);
+    bytes[] memory amt = new bytes[](1);
+    bytes[] memory addr = new bytes[](1);
+    amt[0] = amount.encodeUint();
+    addr[0] = address(this).encodeAddress();
+    elements[0] = address(maliciousToken).encodeAddress();
+    elements[1] = amt.encodeList();
+    elements[2] = addr.encodeList();
+    elements[3] = uint32(1).encodeUint();
+
+    vm.prank(address(crossChain));
+    vm.expectRevert(bytes("malicious method"));
+    tokenHub.handleAckPackage(TRANSFER_OUT_CHANNELID, elements.encodeList());
+  }
+
+  function testBindAndTransferIn() public {
+    // Bind
+    bytes memory pack = buildBindPackage(uint8(0), bytes32("ABC-9C7"), address(abcToken), 1e8, 99e6, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+    abcToken.approve(address(tokenManager), 1e6 * 1e18);
+    tokenManager.approveBind{value: 1e16}(address(abcToken), "ABC-9C7");
+
+    assertEq(tokenHub.getBoundBep2Symbol(address(abcToken)), "ABC-9C7", "wrong bep2 symbol");
+    assertEq(tokenHub.getBoundContract("ABC-9C7"), address(abcToken), "wrong token contract address");
+    assertEq(address(tokenManager).balance, 0, "tokenManager balance should be 0");
+
+    // Expired transferIn
+    address recipient = addrSet[addrIdx++];
+    address refundAddr = addrSet[addrIdx++];
+    assertEq(abcToken.balanceOf(recipient), 0);
+    pack = buildTransferInPackage(bytes32("ABC-9C7"), address(abcToken), 115e17, recipient, refundAddr);
+
+    vm.warp(block.timestamp + 5);
+    vm.prank(address(crossChain));
+    bytes memory payload = tokenHub.handleSynPackage(TRANSFER_IN_CHANNELID, pack);
+    RLPDecode.Iterator memory iter = payload.toRLPItem().iterator();
+    bool success;
+    uint256 idx;
+    bytes32 bep2TokenSymbol;
+    uint256 refAmount;
+    address refAddr;
+    uint32 status;
+    while (iter.hasNext()) {
+      if (idx == 0) {
+        bep2TokenSymbol = bytes32(iter.next().toUint());
+        assertEq(bep2TokenSymbol, bytes32("ABC-9C7"), "wrong token symbol in refund package");
+      } else if (idx == 1) {
+        refAmount = iter.next().toUint();
+        assertEq(refAmount, 115e7, "wrong amount in refund package");
+      } else if (idx == 2) {
+        refAddr = iter.next().toAddress();
+        assertEq(refAddr, refundAddr, "wrong refund address in refund package");
+      } else if (idx == 3) {
+        status = uint32(iter.next().toUint());
+        assertEq(status, uint32(0x01), "wrong status code in refund package");
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode refund package failed");
+
+    // TransferIn succeed
+    recipient = addrSet[addrIdx++];
+    refundAddr = addrSet[addrIdx++];
+    assertEq(abcToken.balanceOf(recipient), 0);
+    pack = buildTransferInPackage(bytes32("ABC-9C7"), address(abcToken), 115e17, recipient, refundAddr);
+    vm.prank(address(crossChain));
+    tokenHub.handleSynPackage(TRANSFER_IN_CHANNELID, pack);
+    assertEq(abcToken.balanceOf(recipient), 115e17, "wrong balance");
+
+    // BNB transferIn
+    recipient = addrSet[addrIdx++];
+    refundAddr = addrSet[addrIdx++];
+    pack = buildTransferInPackage(bytes32("BNB"), address(0x0), 1e18, recipient, refundAddr);
+    uint256 balance = recipient.balance;
+    vm.prank(address(crossChain));
+    tokenHub.handleSynPackage(TRANSFER_IN_CHANNELID, pack);
+    assertEq(recipient.balance - balance, 1e18, "wrong balance");
+
+    // TODO try a large relayer fee
+
+    // BNB transferIn to a non-payable address
+    recipient = address(lightClient);
+    refundAddr = addrSet[addrIdx++];
+    pack = buildTransferInPackage(bytes32("BNB"), address(0x0), 1e18, recipient, refundAddr);
+    balance = recipient.balance;
+    vm.prank(address(crossChain));
+    payload = tokenHub.handleSynPackage(TRANSFER_IN_CHANNELID, pack);
+    assertEq(recipient.balance, balance);
+    iter = payload.toRLPItem().iterator();
+    success = false;
+    idx = 0;
+    while (iter.hasNext()) {
+      if (idx == 0) {
+        bep2TokenSymbol = bytes32(iter.next().toUint());
+        assertEq(bep2TokenSymbol, bytes32("BNB"), "wrong token symbol in refund package");
+      } else if (idx == 1) {
+        refAmount = iter.next().toUint();
+        assertEq(refAmount, 1e8, "wrong amount in refund package");
+      } else if (idx == 2) {
+        refAddr = iter.next().toAddress();
+        assertEq(refAddr, refundAddr, "wrong refund address in refund package");
+      } else if (idx == 3) {
+        status = uint32(iter.next().toUint());
+        assertEq(status, uint32(0x04), "wrong status code in refund package");
+        success = true;
+      } else {
+        break;
+      }
+      ++idx;
+    }
+    require(success, "rlp decode refund package failed");
+  }
+
+  function testTransferOut() public {
+    bytes memory pack = buildBindPackage(uint8(0), bytes32("ABC-9C7"), address(abcToken), 1e8, 99e6, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+
+    abcToken.approve(address(tokenManager), 1e8 * 1e18);
+    tokenManager.approveBind{value: 1e16}(address(abcToken), "ABC-9C7");
+
+    uint64 expireTime = uint64(block.timestamp + 150);
+    address recipient = 0xd719dDfA57bb1489A08DF33BDE4D5BA0A9998C60;
+    uint256 amount = 1e8;
+    uint256 relayerFee = 1e14;
+
+    vm.expectRevert(bytes("received BNB amount should be no less than the minimum relayFee"));
+    tokenHub.transferOut{value: relayerFee}(address(abcToken), recipient, amount, expireTime);
+
+    relayerFee = 1e16;
+    vm.expectRevert(bytes("invalid transfer amount: precision loss in amount conversion"));
+    tokenHub.transferOut{value: relayerFee}(address(abcToken), recipient, amount, expireTime);
+
+    amount = 1e18;
+    vm.expectRevert(bytes("invalid received BNB amount: precision loss in amount conversion"));
+    tokenHub.transferOut{value: relayerFee + 1}(address(abcToken), recipient, amount, expireTime);
+
+    vm.expectRevert(bytes("BEP20: transfer amount exceeds allowance"));
+    tokenHub.transferOut{value: relayerFee}(address(abcToken), recipient, amount, expireTime);
+
+    vm.expectRevert(bytes("the contract has not been bound to any bep2 token"));
+    tokenHub.transferOut{value: relayerFee}(address(defToken), recipient, amount, expireTime);
+
+    vm.expectRevert(bytes("received BNB amount should be no less than the minimum relayFee"));
+    tokenHub.transferOut(address(abcToken), recipient, amount, expireTime);
+
+    uint256 balance = abcToken.balanceOf(address(this));
+    abcToken.approve(address(tokenHub), amount);
+    //TODO expectEmit crossChainPackage
+    vm.expectEmit(true, false, false, true, address(tokenHub));
+    emit transferOutSuccess(address(abcToken), address(this), amount, relayerFee);
+    tokenHub.transferOut{value: relayerFee}(address(abcToken), recipient, amount, expireTime);
+    assertEq(abcToken.balanceOf(address(this)), balance - amount, "wrong balance");
+
+    // refund
+    uint256[] memory amounts = new uint256[](1);
+    address[] memory refundAddrs = new address[](1);
+    amounts[0] = amount;
+    refundAddrs[0] = address(this);
+    bytes memory package = buildRefundPackage(address(abcToken), amounts, refundAddrs, uint32(1));
+
+    vm.prank(address(crossChain));
+    vm.expectEmit(true, false, false, true, address(tokenHub));
+    emit refundSuccess(address(abcToken), address(this), amount, 1);
+    tokenHub.handleAckPackage(TRANSFER_OUT_CHANNELID, package);
+    assertEq(abcToken.balanceOf(address(this)), balance, "wrong balance");
+
+    // Fail ack refund
+    uint256 length = 5;
+    uint256[] memory balances = new uint256[](length);
+    address[] memory recipients = new address[](length);
+    amounts = new uint256[](length);
+    refundAddrs = new address[](length);
+    for (uint256 i; i < length; ++i) {
+      amounts[i] = (i + 1) * 1e6;
+      balances[i] = abcToken.balanceOf(addrSet[addrIdx]);
+      recipients[i] = addrSet[addrIdx];
+      refundAddrs[i] = addrSet[addrIdx++];
+    }
+
+    package = buildBatchTransferOutFailAckPackage(bytes32("ABC-9C7"), address(abcToken), amounts, recipients, refundAddrs);
+    vm.prank(address(crossChain));
+    tokenHub.handleFailAckPackage(TRANSFER_OUT_CHANNELID, package);
+    for (uint256 i; i < length; ++i) {
+      assertEq(abcToken.balanceOf(recipients[i]) - balances[i], amounts[i] * 1e10, "wrong balance");
+    }
+  }
+
+  function testBatchTransferOutBNB() public {
+    uint64 expireTime = uint64(block.timestamp + 150);
+    address[] memory recipients = new address[](2);
+    address[] memory refundAddrs = new address[](2);
+    uint256[] memory amounts = new uint256[](2);
+    for (uint256 i; i < 2; ++i) {
+      recipients[i] = addrSet[addrIdx];
+      refundAddrs[i] = addrSet[addrIdx++];
+      amounts[i] = 5e9;
+    }
+
+    vm.expectRevert(bytes("invalid transfer amount: precision loss in amount conversion"));
+    tokenHub.batchTransferOutBNB{value: 5e16}(recipients, amounts, refundAddrs, expireTime);
+
+    amounts[0] = 1e16;
+    amounts[1] = 2e16;
+    vm.expectEmit(true, false, false, true, address(tokenHub));
+    emit transferOutSuccess(address(0x0), address(this), 3e16, 2e16);
+    tokenHub.batchTransferOutBNB{value: 5e16}(recipients, amounts, refundAddrs, expireTime);
+  }
+
+  //TODO testOverflow
+
+  function testUnbind() public {
+    // Bind first
+    bytes memory pack = buildBindPackage(uint8(0), bytes32("ABC-9C7"), address(abcToken), 1e8, 99e6, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+
+    abcToken.approve(address(tokenManager), 1e8 * 1e18);
+    tokenManager.approveBind{value: 1e16}(address(abcToken), "ABC-9C7");
+
+    // Unbind
+    pack = buildBindPackage(uint8(1), bytes32("ABC-9C7"), address(abcToken), 0, 0, uint8(0));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+
+    assertEq(tokenHub.getBoundBep2Symbol(address(abcToken)), "", "wrong symbol");
+    assertEq(tokenHub.getBoundContract("ABC-9C7"), address(0x0), "wrong token contract address");
+
+    // TransferIn failed
+    address recipient = addrSet[addrIdx++];
+    address refundAddr = addrSet[addrIdx++];
+    assertEq(abcToken.balanceOf(recipient), 0);
+    pack = buildTransferInPackage(bytes32("ABC-9C7"), address(abcToken), 115e17, recipient, refundAddr);
+    vm.prank(address(crossChain));
+    tokenHub.handleSynPackage(TRANSFER_IN_CHANNELID, pack);
+    assertEq(abcToken.balanceOf(recipient), 0, "wrong balance");
+
+    // TransferOut refund
+    recipient = addrSet[addrIdx++];
+    uint256 amount = 1e18;
+    uint256[] memory amounts = new uint256[](1);
+    address[] memory refundAddrs = new address[](1);
+    amounts[0] = amount;
+    refundAddrs[0] = recipient;
+    bytes memory package = buildRefundPackage(address(abcToken), amounts, refundAddrs, uint32(1));
+    abcToken.transfer(address(tokenHub), amount);
+
+    vm.prank(address(crossChain));
+    vm.expectEmit(true, false, false, true, address(tokenHub));
+    emit refundSuccess(address(abcToken), recipient, amount, 1);
+    tokenHub.handleAckPackage(TRANSFER_OUT_CHANNELID, package);
+    assertEq(abcToken.balanceOf(recipient), amount, "wrong balance");
+
+    // TransferOut failed
+    uint64 expireTime = uint64(block.timestamp + 150);
+    uint256 relayerFee = 1e14;
+    recipient = 0xd719dDfA57bb1489A08DF33BDE4D5BA0A9998C60;
+    amount = 1e8;
+
+    abcToken.approve(address(tokenHub), amount);
+    vm.expectRevert(bytes("the contract has not been bound to any bep2 token"));
+    tokenHub.transferOut{value: relayerFee}(address(abcToken), recipient, amount, expireTime);
+  }
+
+  function testMiniToken() public {
+    // Bind
+    bytes memory pack = buildBindPackage(uint8(0), bytes32("XYZ-9C7M"), address(miniToken), 1e4, 5e3, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+
+    miniToken.approve(address(tokenManager), 5e3 * 1e18);
+    vm.expectEmit(true, false, false, true, address(tokenManager));
+    emit bindSuccess(address(miniToken), "XYZ-9C7M", 1e4 * 1e18, 5e3 * 1e18);
+    tokenManager.approveBind{value: 1e16}(address(miniToken), "XYZ-9C7M");
+
+    assertEq(tokenHub.getBoundBep2Symbol(address(miniToken)), "XYZ-9C7M", "wrong bep2 symbol");
+    assertEq(tokenHub.getBoundContract("XYZ-9C7M"), address(miniToken), "wrong token contract address");
+
+    // TransferIn
+    address recipient = addrSet[addrIdx++];
+    address refundAddr = addrSet[addrIdx++];
+    assertEq(miniToken.balanceOf(recipient), 0);
+    pack = buildTransferInPackage(bytes32("XYZ-9C7M"), address(miniToken), 1e18, recipient, refundAddr);
+    vm.prank(address(crossChain));
+    tokenHub.handleSynPackage(TRANSFER_IN_CHANNELID, pack);
+    assertEq(miniToken.balanceOf(recipient), 1e18, "wrong balance");
+
+    // TransferOut
+    uint64 expireTime = uint64(block.timestamp + 150);
+    uint256 amount = 1e18;
+    uint256 relayerFee = 1e16;
+    recipient = addrSet[addrIdx++];
+
+    miniToken.approve(address(tokenHub), amount);
+    vm.expectEmit(true, false, false, true, address(tokenHub));
+    emit transferOutSuccess(address(miniToken), address(this), 1e18, 1e16);
+    tokenHub.transferOut{value: relayerFee}(address(miniToken), recipient, amount, expireTime);
+
+    // TransferOut failed
+    amount = 5e17;
+    recipient = addrSet[addrIdx++];
+
+    miniToken.approve(address(tokenHub), amount);
+    vm.expectRevert(bytes("For miniToken, the transfer amount must not be less than 1"));
+    tokenHub.transferOut{value: relayerFee}(address(miniToken), recipient, amount, expireTime);
+  }
+
+  function testMirrorFailed() public {
+    uint256 mirrorFee = 1e20;
+    uint256 syncFee = 1e19;
+
+    bytes memory key = "mirrorFee";
+    bytes memory valueBytes = abi.encodePacked(mirrorFee);
+    updateParamByGovHub(key, valueBytes, address(tokenManager));
+    assertEq(tokenManager.mirrorFee(), mirrorFee, "wrong mirrorFee");
+
+    key = "syncFee";
+    valueBytes = abi.encodePacked(syncFee);
+    updateParamByGovHub(key, valueBytes, address(tokenManager));
+    assertEq(tokenManager.syncFee(), syncFee, "wrong syncFee");
+
+    // Bind miniToken
+    bytes memory pack = buildBindPackage(uint8(0), bytes32("XYZ-9C7M"), address(miniToken), 1e4, 5e3, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+    miniToken.approve(address(tokenManager), 5e3 * 1e18);
+    tokenManager.approveBind{value: 1e16}(address(miniToken), "XYZ-9C7M");
+
+    // Mirror failed
+    uint64 expireTime = uint64(block.timestamp + 300);
+    uint256 miniRelayerFee = tokenHub.getMiniRelayFee();
+    vm.expectRevert(bytes("already bound"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(miniToken), expireTime);
+
+    expireTime = uint64(block.timestamp + 100);
+    vm.expectRevert(bytes("expireTime must be two minutes later and one day earlier"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setName("");
+    expireTime = uint64(block.timestamp + 300);
+    vm.expectRevert(bytes("name length must be in [1,32]"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setName("XYZ TokenXYZ TokenXYZ TokenXYZ Token");
+    vm.expectRevert(bytes("name length must be in [1,32]"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setName("XYZ Token");
+    xyzToken.setSymbol("X");
+    vm.expectRevert(bytes("symbol length must be in [2,8]"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setSymbol("XYZXYZXYZ");
+    vm.expectRevert(bytes("symbol length must be in [2,8]"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setSymbol("X-Z");
+    vm.expectRevert(bytes("symbol should only contain alphabet and number"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setSymbol("X_Z");
+    vm.expectRevert(bytes("symbol should only contain alphabet and number"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setSymbol("XYZ");
+    xyzToken.setDecimals(1);
+    vm.expectRevert(bytes("too large total supply"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setDecimals(87);
+    vm.expectRevert(bytes("too large decimals"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setDecimals(18);
+    xyzToken.setTotalSupply(1e18 * 1e18);
+    vm.expectRevert(bytes("too large total supply"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    vm.expectRevert(bytes("msg.value must be N * 1e10 and greater than sum of miniRelayFee and mirrorFee"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee + 1e9}(address(xyzToken), expireTime);
+
+    vm.expectRevert(bytes("msg.value must be N * 1e10 and greater than sum of miniRelayFee and mirrorFee"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee - 1e9}(address(xyzToken), expireTime);
+
+    xyzToken.setTotalSupply(1e8 * 1e18);
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+    assertEq(address(tokenManager).balance, mirrorFee, "wrong balance in tokenManager");
+    vm.expectRevert(bytes("mirror pending"));
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    // Mirror fail ack
+    pack = buildMirrorFailAckPackage(address(this), address(xyzToken), bytes32("XYZ Token"), uint8(18), bytes32("XYZ"), 1e8 * 1e18, mirrorFee / 1e10, expireTime);
+    vm.prank(address(crossChain));
+    tokenManager.handleFailAckPackage(MIRROR_CHANNELID, pack);
+    assertEq(address(tokenManager).balance, 0, "wrong balance in tokenManager");
+
+    // Mirror ack
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+    assertEq(address(tokenManager).balance, mirrorFee, "wrong balance in tokenManager");
+    pack = buildMirrorAckPackage(address(this), address(xyzToken), uint8(18), bytes32(""), mirrorFee, uint8(1));
+    vm.prank(address(crossChain));
+    tokenManager.handleAckPackage(MIRROR_CHANNELID, pack);
+    assertEq(address(tokenManager).balance, 0, "wrong balance in tokenManager");
+  }
+
+  function testMirrorAndSncSucceed() public {
+    uint256 mirrorFee = 1e20;
+    uint256 syncFee = 1e19;
+
+    bytes memory key = "mirrorFee";
+    bytes memory valueBytes = abi.encodePacked(mirrorFee);
+    updateParamByGovHub(key, valueBytes, address(tokenManager));
+    assertEq(tokenManager.mirrorFee(), mirrorFee, "wrong mirrorFee");
+
+    key = "syncFee";
+    valueBytes = abi.encodePacked(syncFee);
+    updateParamByGovHub(key, valueBytes, address(tokenManager));
+    assertEq(tokenManager.syncFee(), syncFee, "wrong syncFee");
+
+    uint64 expireTime = uint64(block.timestamp + 150);
+    uint256 miniRelayerFee = tokenHub.getMiniRelayFee();
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+    assertEq(address(tokenManager).balance, mirrorFee, "wrong balance in tokenManager");
+
+    bytes memory pack = buildMirrorAckPackage(address(this), address(xyzToken), uint8(18), bytes32("XYZ-123"), mirrorFee, uint8(0));
+    vm.prank(address(crossChain));
+    tokenManager.handleAckPackage(MIRROR_CHANNELID, pack);
+    assertEq(address(tokenManager).balance, 0, "wrong balance in tokenManager");
+    assertEq(tokenHub.getBoundBep2Symbol(address(xyzToken)), "XYZ-123", "wrong bep2 symbol");
+
+    xyzToken.mint(1e8 * 1e18);
+    uint256 totalSupply = xyzToken.totalSupply();
+
+    // sync
+    tokenManager.sync{value: miniRelayerFee + syncFee}(address(xyzToken), expireTime);
+    assertEq(address(tokenManager).balance, syncFee, "wrong balance in tokenManager");
+
+    // sync fail ack
+    pack = buildSyncFailAckPackage(address(this), address(xyzToken), bytes32("XYZ"), totalSupply, syncFee / 1e10, expireTime);
+    vm.prank(address(crossChain));
+    tokenManager.handleFailAckPackage(SYNC_CHANNELID, pack);
+    assertEq(address(tokenManager).balance, 0, "wrong balance in tokenManager");
+
+    // sync success
+    tokenManager.sync{value: miniRelayerFee + syncFee}(address(xyzToken), expireTime);
+    assertEq(address(tokenManager).balance, syncFee, "wrong balance in tokenManager");
+    pack = buildSyncAckPackage(address(this), address(xyzToken), syncFee, uint8(0));
+    vm.prank(address(crossChain));
+    tokenManager.handleAckPackage(SYNC_CHANNELID, pack);
+    assertEq(address(tokenManager).balance, 0, "wrong balance in tokenManager");
+  }
+
+  function testSyncFailed() public {
+    uint256 mirrorFee = 1e20;
+    uint256 syncFee = 1e19;
+
+    bytes memory key = "mirrorFee";
+    bytes memory valueBytes = abi.encodePacked(mirrorFee);
+    updateParamByGovHub(key, valueBytes, address(tokenManager));
+    assertEq(tokenManager.mirrorFee(), mirrorFee, "wrong mirrorFee");
+
+    key = "syncFee";
+    valueBytes = abi.encodePacked(syncFee);
+    updateParamByGovHub(key, valueBytes, address(tokenManager));
+    assertEq(tokenManager.syncFee(), syncFee, "wrong syncFee");
+
+    // Bond mini token
+    bytes memory pack = buildBindPackage(uint8(0), bytes32("XYZ-9C7M"), address(miniToken), 1e4, 5e3, uint8(18));
+    vm.prank(address(crossChain));
+    tokenManager.handleSynPackage(BIND_CHANNELID, pack);
+    miniToken.approve(address(tokenManager), 5e3 * 1e18);
+    tokenManager.approveBind{value: 1e16}(address(miniToken), "XYZ-9C7M");
+
+    // Mirror xyz
+    uint64 expireTime = uint64(block.timestamp + 300);
+    uint256 miniRelayerFee = tokenHub.getMiniRelayFee();
+    tokenManager.mirror{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+    pack = buildMirrorAckPackage(address(this), address(xyzToken), uint8(18), bytes32("XYZ-123"), mirrorFee, uint8(0));
+    vm.prank(address(crossChain));
+    tokenManager.handleAckPackage(MIRROR_CHANNELID, pack);
+
+    // Sync failed
+    vm.expectRevert(bytes("not bound"));
+    tokenManager.sync{value: miniRelayerFee + mirrorFee}(address(defToken), expireTime);
+
+    vm.expectRevert(bytes("not bound by mirror"));
+    tokenManager.sync{value: miniRelayerFee + mirrorFee}(address(miniToken), expireTime);
+
+    expireTime = uint64(block.timestamp + 100);
+    vm.expectRevert(bytes("expireTime must be two minutes later and one day earlier"));
+    tokenManager.sync{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    expireTime = uint64(block.timestamp + 300);
+    xyzToken.setTotalSupply(1e18 * 1e18);
+    vm.expectRevert(bytes("too large total supply"));
+    tokenManager.sync{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+
+    xyzToken.setTotalSupply(1e8 * 1e18);
+    tokenManager.sync{value: miniRelayerFee + mirrorFee}(address(xyzToken), expireTime);
+  }
+
+  function buildBindPackage(uint8 bindType, bytes32 symbol, address addr, uint256 totalSupply, uint256 peggyAmount, uint8 decimal) internal view returns (bytes memory) {
+    uint256 timestamp = block.timestamp;
+    uint256 expireTime = timestamp + 3;
+    bytes[] memory elements = new bytes[](7);
+    elements[0] = bindType.encodeUint();
+    elements[1] = abi.encodePacked(symbol).encodeBytes();
+    elements[2] = addr.encodeAddress();
+    elements[3] = (totalSupply * (10 ** decimal)).encodeUint();
+    elements[4] = (peggyAmount * (10 ** decimal)).encodeUint();
+    elements[5] = decimal.encodeUint();
+    elements[6] = expireTime.encodeUint();
+    return elements.encodeList();
+  }
+
+  function buildTransferInPackage(bytes32 symbol, address tokenAddr, uint256 amount, address recipient, address refundAddr) internal view returns (bytes memory) {
+    uint256 timestamp = block.timestamp;
+    uint256 expireTime = timestamp + 3;
+    bytes[] memory elements = new bytes[](6);
+    elements[0] = abi.encodePacked(symbol).encodeBytes();
+    elements[1] = tokenAddr.encodeAddress();
+    elements[2] = amount.encodeUint();
+    elements[3] = recipient.encodeAddress();
+    elements[4] = refundAddr.encodeAddress();
+    elements[5] = expireTime.encodeUint();
+    return elements.encodeList();
+  }
+
+  function buildBatchTransferOutFailAckPackage(bytes32 symbol, address tokenAddr, uint256[] memory amounts, address[] memory recipients, address[] memory refundAddrs) internal view returns (bytes memory) {
+    uint256 length = amounts.length;
+    bytes[] memory amtBytes = new bytes[](length);
+    bytes[] memory recipientBytes = new bytes[](length);
+    bytes[] memory refundAddrBytes = new bytes[](length);
+    for (uint256 i; i < length; ++i) {
+      amtBytes[i] = amounts[i].encodeUint();
+      recipientBytes[i] = recipients[i].encodeAddress();
+      refundAddrBytes[i] = refundAddrs[i].encodeAddress();
+    }
+
+    uint256 timestamp = block.timestamp;
+    uint256 expireTime = timestamp + 150;
+    bytes[] memory elements = new bytes[](6);
+    elements[0] = abi.encodePacked(symbol).encodeBytes();
+    elements[1] = tokenAddr.encodeAddress();
+    elements[2] = amtBytes.encodeList();
+    elements[3] = recipientBytes.encodeList();
+    elements[4] = refundAddrBytes.encodeList();
+    elements[5] = expireTime.encodeUint();
+    return elements.encodeList();
+  }
+
+  function buildRefundPackage(address tokenAddr, uint256[] memory amounts, address[] memory recipients, uint32 status) internal pure returns (bytes memory) {
+    uint256 length = amounts.length;
+    bytes[] memory amtBytes = new bytes[](length);
+    bytes[] memory recipientBytes = new bytes[](length);
+    for (uint256 i; i < length; ++i) {
+      amtBytes[i] = amounts[i].encodeUint();
+      recipientBytes[i] = recipients[i].encodeAddress();
+    }
+
+    bytes[] memory elements = new bytes[](4);
+    elements[0] = tokenAddr.encodeAddress();
+    elements[1] = amtBytes.encodeList();
+    elements[2] = recipientBytes.encodeList();
+    elements[3] = status.encodeUint();
+    return elements.encodeList();
+  }
+
+  function buildMirrorAckPackage(address sender, address tokenAddr, uint8 decimal, bytes32 symbol, uint256 mirrorFee, uint8 errCode) internal pure returns (bytes memory) {
+    bytes[] memory elements = new bytes[](6);
+    elements[0] = sender.encodeAddress();
+    elements[1] = tokenAddr.encodeAddress();
+    elements[2] = decimal.encodeUint();
+    elements[3] = abi.encodePacked(symbol).encodeBytes();
+    elements[4] = mirrorFee.encodeUint();
+    elements[5] = errCode.encodeUint();
+    return elements.encodeList();
+  }
+
+  function buildMirrorFailAckPackage(address sender, address tokenAddr, bytes32 name, uint8 decimal, bytes32 symbol, uint256 supply, uint256 mirrorFee, uint256 expireTime) internal pure returns (bytes memory) {
+    bytes[] memory elements = new bytes[](8);
+    elements[0] = sender.encodeAddress();
+    elements[1] = tokenAddr.encodeAddress();
+    elements[2] = abi.encodePacked(name).encodeBytes();
+    elements[3] = abi.encodePacked(symbol).encodeBytes();
+    elements[4] = supply.encodeUint();
+    elements[5] = decimal.encodeUint();
+    elements[6] = mirrorFee.encodeUint();
+    elements[7] = expireTime.encodeUint();
+    return elements.encodeList();
+  }
+
+  function buildSyncAckPackage(address sender, address tokenAddr, uint256 syncFee, uint8 errCode) internal pure returns (bytes memory) {
+    bytes[] memory elements = new bytes[](6);
+    elements[0] = sender.encodeAddress();
+    elements[1] = tokenAddr.encodeAddress();
+    elements[2] = syncFee.encodeUint();
+    elements[3] = errCode.encodeUint();
+    return elements.encodeList();
+  }
+
+  function buildSyncFailAckPackage(address sender, address tokenAddr, bytes32 symbol, uint256 supply, uint256 syncFee, uint256 expireTime) internal pure returns (bytes memory) {
+    bytes[] memory elements = new bytes[](6);
+    elements[0] = sender.encodeAddress();
+    elements[1] = tokenAddr.encodeAddress();
+    elements[2] = abi.encodePacked(symbol).encodeBytes();
+    elements[3] = supply.encodeUint();
+    elements[4] = syncFee.encodeUint();
+    elements[5] = expireTime.encodeUint();
+    return elements.encodeList();
+  }
+}
diff --git a/test/ToolTest.js b/test/ToolTest.js
deleted file mode 100644
index 9bcd161e..00000000
--- a/test/ToolTest.js
+++ /dev/null
@@ -1,19 +0,0 @@
-const BSCValidatorSetTool = artifacts.require("tool/BSCValidatorSetTool");
-const Web3 = require('web3');
-const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
-
-contract('Tool', (accounts) => {
-  it('tool test', async () => {
-    const toolInstance = await BSCValidatorSetTool.deployed();
-    await toolInstance.init();
-  });
-  
-  it('decode payload header', async () => {
-    let payload = "0x00000000000000000000000000000000000000000000000000002386f26fc10000f85580a04142432d304237000000000000000000000000000000000000000000000000009450ee0de39df3b9c2bc8f8e33d9e4cd03dba9210c8b52b7d2dcc80cd2e40000008b31a17e847807b1bc00000012845f5efcc1"
-    const toolInstance = await BSCValidatorSetTool.deployed();
-    let x = await toolInstance.decodePayloadHeader.call(web3.utils.hexToBytes(payload));
-    assert.equal(x[2].toString(), "10000000000000000");
-  });
-  
-});
-
diff --git a/test/ValidatorSet.t.sol b/test/ValidatorSet.t.sol
new file mode 100644
index 00000000..f4af625c
--- /dev/null
+++ b/test/ValidatorSet.t.sol
@@ -0,0 +1,559 @@
+pragma solidity ^0.8.10;
+
+import "../lib/Deployer.sol";
+
+contract ValidatorSetTest is Deployer {
+  using RLPEncode for *;
+
+  event validatorSetUpdated();
+  event validatorJailed(address indexed validator);
+  event validatorEmptyJailed(address indexed validator);
+  event batchTransfer(uint256 amount);
+  event batchTransferFailed(uint256 indexed amount, string reason);
+  event batchTransferLowerFailed(uint256 indexed amount, bytes reason);
+  event systemTransfer(uint256 amount);
+  event directTransfer(address payable indexed validator, uint256 amount);
+  event directTransferFail(address payable indexed validator, uint256 amount);
+  event deprecatedDeposit(address indexed validator, uint256 amount);
+  event validatorDeposit(address indexed validator, uint256 amount);
+  event validatorMisdemeanor(address indexed validator, uint256 amount);
+  event validatorFelony(address indexed validator, uint256 amount);
+  event failReasonWithStr(string message);
+  event unexpectedPackage(uint8 channelId, bytes msgBytes);
+  event paramChange(string key, bytes value);
+  event feeBurned(uint256 amount);
+  event validatorEnterMaintenance(address indexed validator);
+  event validatorExitMaintenance(address indexed validator);
+  event finalityRewardDeposit(address indexed validator, uint256 amount);
+  event deprecatedFinalityRewardDeposit(address indexed validator, uint256 amount);
+
+  uint256 public totalInComing;
+  uint256 public burnRatio;
+  uint256 public burnRatioScale;
+  uint256 public maxNumOfWorkingCandidates;
+  uint256 public numOfCabinets;
+  address public coinbase;
+  address[] public validators;
+
+  mapping(address => bool) cabinets;
+
+  function setUp() public {
+    bytes memory rewardCode = vm.getDeployedCode("SystemReward.sol");
+    vm.etch(address(systemReward), rewardCode);
+    bytes memory slashCode = vm.getDeployedCode("SlashIndicator.sol");
+    vm.etch(address(slash), slashCode);
+    bytes memory validatorCode = vm.getDeployedCode("BSCValidatorSet.sol");
+    vm.etch(address(validator), validatorCode);
+
+    // add operator
+    bytes memory key = "updateOperator";
+    bytes memory valueBytes = abi.encodePacked(address(validator));
+    vm.expectEmit(false, false, false, true, address(systemReward));
+    emit paramChange(string(key), valueBytes);
+    updateParamByGovHub(key, valueBytes, address(systemReward));
+    assertTrue(systemReward.isOperator(address(validator)));
+
+    burnRatio = validator.INIT_BURN_RATIO();
+    burnRatioScale = validator.BURN_RATIO_SCALE();
+    validators = validator.getValidators();
+    totalInComing = validator.totalInComing();
+    maxNumOfWorkingCandidates = validator.maxNumOfWorkingCandidates();
+    numOfCabinets = validator.numOfCabinets();
+
+    coinbase = block.coinbase;
+    vm.deal(coinbase, 100 ether);
+  }
+
+  function testDeposit(uint256 amount) public {
+    vm.assume(amount >= 1e16);
+    vm.assume(amount <= 1e19);
+    vm.expectRevert("the message sender must be the block producer");
+    validator.deposit{value: amount}(validators[0]);
+
+    vm.startPrank(coinbase);
+    vm.expectRevert("deposit value is zero");
+    validator.deposit(validators[0]);
+
+    uint256 realAmount = amount - amount * burnRatio / burnRatioScale;
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit validatorDeposit(validators[0], realAmount);
+    validator.deposit{value: amount}(validators[0]);
+
+    address newAccount = addrSet[addrIdx++];
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit deprecatedDeposit(newAccount, realAmount);
+    validator.deposit{value: amount}(newAccount);
+
+    assertEq(validator.totalInComing(), totalInComing + realAmount);
+    vm.stopPrank();
+  }
+
+  function testBurn(uint8 coefficient) public {
+    vm.assume(coefficient < 10000);
+    bytes32 co = bytes32(uint256(coefficient));
+    bytes memory key = "burnRatio";
+    bytes memory value = new bytes(32);
+    assembly {
+      mstore(add(value, 32), co)
+      mstore(add(add(value, 32), 32), add(co, 32))
+    }
+
+    updateParamByGovHub(key, value, address(validator));
+
+    burnRatio = validator.burnRatio();
+    assertEq(burnRatio, coefficient);
+
+    vm.startPrank(coinbase);
+    uint256 amount = 1 ether;
+    uint256 realAmount = amount - amount * burnRatio / burnRatioScale;
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit validatorDeposit(validators[0], realAmount);
+    validator.deposit{value: amount}(validators[0]);
+    vm.stopPrank();
+  }
+
+  function testGov() public {
+    bytes memory key = "maxNumOfWorkingCandidates";
+    bytes memory value = bytes(hex"0000000000000000000000000000000000000000000000000000000000000015"); // 21
+    vm.expectEmit(false, false, false, true, address(govHub));
+    emit failReasonWithStr("the maxNumOfWorkingCandidates must be not greater than maxNumOfCandidates");
+    updateParamByGovHub(key, value, address(validator));
+    assertEq(validator.maxNumOfWorkingCandidates(), maxNumOfWorkingCandidates);
+
+    value = bytes(hex"000000000000000000000000000000000000000000000000000000000000000a"); // 10
+    updateParamByGovHub(key, value, address(validator));
+    assertEq(validator.maxNumOfWorkingCandidates(), 10);
+
+    key = "maxNumOfCandidates";
+    value = bytes(hex"0000000000000000000000000000000000000000000000000000000000000005"); // 5
+    updateParamByGovHub(key, value, address(validator));
+    assertEq(validator.maxNumOfCandidates(), 5);
+    assertEq(validator.maxNumOfWorkingCandidates(), 5);
+  }
+
+  function testGetMiningValidatorsWith41Vals() public {
+    address[] memory newValidators = new address[](41);
+    for (uint256 i; i < 41; ++i) {
+      newValidators[i] = addrSet[addrIdx++];
+    }
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValidators));
+    vm.stopPrank();
+
+    address[] memory vals = validator.getValidators();
+    (address[] memory miningVals,) = validator.getMiningValidators();
+
+    uint256 count;
+    uint256 _numOfCabinets;
+    uint256 _maxNumOfWorkingCandidates = maxNumOfWorkingCandidates;
+    if (numOfCabinets == 0) {
+      _numOfCabinets = validator.INIT_NUM_OF_CABINETS();
+    } else {
+      _numOfCabinets = numOfCabinets;
+    }
+    if ((vals.length - _numOfCabinets) < _maxNumOfWorkingCandidates) {
+      _maxNumOfWorkingCandidates = vals.length - _numOfCabinets;
+    }
+
+    for (uint256 i; i < _numOfCabinets; ++i) {
+      cabinets[vals[i]] = true;
+    }
+    for (uint256 i; i < _numOfCabinets; ++i) {
+      if (!cabinets[miningVals[i]]) {
+        ++count;
+      }
+    }
+    assertGe(_maxNumOfWorkingCandidates, count);
+    assertGe(count, 0);
+  }
+
+  function testDistributeAlgorithm() public {
+    address[] memory newValidator = new address[](1);
+    newValidator[0] = addrSet[addrIdx++];
+
+    // To reset the incoming
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValidator));
+    vm.stopPrank();
+
+    address val = newValidator[0];
+    address tmp = addrSet[addrIdx++];
+    vm.deal(address(validator), 0);
+
+    vm.startPrank(coinbase);
+    for (uint256 i; i < 5; ++i) {
+      validator.deposit{value: 1 ether}(val);
+      validator.deposit{value: 1 ether}(tmp);
+      validator.deposit{value: 0.1 ether}(val);
+      validator.deposit{value: 0.1 ether}(tmp);
+    }
+    vm.stopPrank();
+
+    uint256 balance = address(validator).balance;
+    uint256 incoming = validator.totalInComing();
+    assertEq(balance, 9.9 ether);
+    assertEq(incoming, 4.95 ether);
+
+    newValidator[0] = addrSet[addrIdx++];
+
+    vm.expectEmit(false, false, false, true, address(validator));
+    emit batchTransfer(4.95 ether);
+    vm.expectEmit(false, false, false, true, address(validator));
+    emit systemTransfer((9.9 ether - 4.95 ether));
+    vm.expectEmit(false, false, false, false, address(validator));
+    emit validatorSetUpdated();
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValidator));
+    vm.stopPrank();
+  }
+
+  function testMassiveDistribute() public {
+    address[] memory newValidators = new address[](41);
+    for (uint256 i; i < 41; ++i) {
+      newValidators[i] = addrSet[addrIdx++];
+    }
+
+    // To reset the incoming
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValidators));
+    vm.stopPrank();
+
+    vm.startPrank(coinbase);
+    for (uint256 i; i < 41; ++i) {
+      validator.deposit{value: 1 ether}(newValidators[i]);
+    }
+    vm.stopPrank();
+
+    for (uint256 i; i < 41; ++i) {
+      newValidators[i] = addrSet[addrIdx++];
+    }
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValidators));
+    vm.stopPrank();
+  }
+
+  function testDistribute41Plus() public {
+    address[] memory newValidators = new address[](42);
+    for (uint256 i; i < 42; ++i) {
+      newValidators[i] = addrSet[addrIdx++];
+    }
+
+    // To reset the incoming
+    vm.startPrank(address(crossChain));
+    vm.expectEmit(false, false, false, true, address(validator));
+    emit failReasonWithStr("the number of validators exceed the limit");
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValidators));
+    vm.stopPrank();
+  }
+
+  function testComplicateDistribute1() public {
+    address[] memory newValidators = new address[](5);
+    address deprecated = addrSet[addrIdx++];
+    uint256 balance = deprecated.balance;
+    for (uint256 i; i < 5; ++i) {
+      newValidators[i] = addrSet[addrIdx++];
+    }
+    bytes memory pack = encodeOldValidatorSetUpdatePack(0x00, newValidators);
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, pack);
+    vm.stopPrank();
+
+    vm.startPrank(coinbase);
+    validator.deposit{value: 1e16}(newValidators[0]);
+    validator.deposit{value: 1e16}(newValidators[1]);
+    validator.deposit{value: 1e17}(newValidators[2]);
+    validator.deposit{value: 1e18}(newValidators[3]);
+    validator.deposit{value: 1e18}(newValidators[4]);
+    validator.deposit{value: 1e18}(deprecated);
+    validator.deposit{value: 1e5}(newValidators[4]);
+    vm.stopPrank();
+
+    vm.expectEmit(false, false, false, true, address(validator));
+    emit batchTransfer(1.8 ether);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransfer(payable(newValidators[0]), 9e15);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransfer(payable(newValidators[1]), 9e15);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransfer(payable(newValidators[2]), 9e16);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit systemTransfer(9e17 + 9e4);
+    vm.expectEmit(false, false, false, false, address(validator));
+    emit validatorSetUpdated();
+
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, pack);
+    vm.stopPrank();
+
+    assertEq(newValidators[0].balance, balance + 9e15);
+    assertEq(newValidators[1].balance, balance + 9e15);
+    assertEq(newValidators[2].balance, balance + 9e16);
+    assertEq(newValidators[3].balance, balance);
+    assertEq(newValidators[4].balance, balance);
+    assertEq(deprecated.balance, balance);
+  }
+
+  function testValidateSetChange() public {
+    address[][] memory newValSet = new address[][](5);
+    for (uint256 i; i < 5; ++i) {
+      address[] memory valSet = new address[](5+i);
+      for (uint256 j; j < 5 + i; ++j) {
+        valSet[j] = addrSet[addrIdx++];
+      }
+      newValSet[i] = valSet;
+    }
+
+    vm.startPrank(address(crossChain));
+    for (uint256 k; k < 5; ++k) {
+      validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValSet[k]));
+      address[] memory valSet = validator.getValidators();
+      for (uint256 l; l < 5 + k; ++l) {
+        assertEq(valSet[l], newValSet[k][l], "consensusAddr not equal");
+        assertTrue(validator.isCurrentValidator(newValSet[k][l]), "the address should be a validator");
+      }
+    }
+    vm.stopPrank();
+  }
+
+  function testCannotUpdateValidatorSet() public {
+    address[][] memory newValSet = new address[][](4);
+    newValSet[0] = new address[](3);
+    newValSet[0][0] = addrSet[addrIdx];
+    newValSet[0][1] = addrSet[addrIdx++];
+    newValSet[0][2] = addrSet[addrIdx++];
+    newValSet[1] = new address[](3);
+    newValSet[1][0] = addrSet[addrIdx++];
+    newValSet[1][1] = addrSet[addrIdx];
+    newValSet[1][2] = addrSet[addrIdx++];
+    newValSet[2] = new address[](4);
+    newValSet[2][0] = addrSet[addrIdx++];
+    newValSet[2][1] = addrSet[addrIdx++];
+    newValSet[2][2] = addrSet[addrIdx++];
+    newValSet[2][3] = addrSet[addrIdx++];
+
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValSet[2]));
+    for (uint256 i; i < 2; ++i) {
+      vm.expectEmit(false, false, false, true, address(validator));
+      emit failReasonWithStr("duplicate consensus address of validatorSet");
+      validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValSet[i]));
+    }
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValSet[3]));
+    vm.stopPrank();
+
+    uint256 height = block.number;
+    vm.warp(height + 1);
+
+    uint64 _sequence = crossChain.channelReceiveSequenceMap(STAKING_CHANNELID);
+    vm.expectRevert(bytes("the msg sender is not a relayer"));
+    crossChain.handlePackage(bytes("1"), bytes("2"), uint64(height + 1), _sequence, STAKING_CHANNELID);
+
+    vm.startPrank(address(relayer));
+    vm.expectRevert(bytes("light client not sync the block yet"));
+    crossChain.handlePackage(bytes("1"), bytes("2"), uint64(height + 1), _sequence, STAKING_CHANNELID);
+    vm.stopPrank();
+  }
+
+  // one validator's fee addr is a contract
+  function testComplicateDistribute2() public {
+    address[] memory newValidators = new address[](5);
+    address deprecated = addrSet[addrIdx++];
+    uint256 balance = deprecated.balance;
+    newValidators[0] = address(slash);
+    for (uint256 i = 1; i < 5; ++i) {
+      newValidators[i] = addrSet[addrIdx++];
+    }
+    bytes memory pack = encodeOldValidatorSetUpdatePack(0x00, newValidators);
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, pack);
+    vm.stopPrank();
+
+    vm.startPrank(coinbase);
+    validator.deposit{value: 1e16}(newValidators[0]);
+    validator.deposit{value: 1e16}(newValidators[1]);
+    validator.deposit{value: 1e17}(newValidators[2]);
+    validator.deposit{value: 1e18}(newValidators[3]);
+    validator.deposit{value: 1e18}(newValidators[4]);
+    validator.deposit{value: 1e18}(deprecated);
+    validator.deposit{value: 1e5}(newValidators[4]);
+    vm.stopPrank();
+
+    vm.expectEmit(false, false, false, true, address(validator));
+    emit batchTransfer(1.8 ether);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransferFail(payable(newValidators[0]), 9e15);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransfer(payable(newValidators[1]), 9e15);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransfer(payable(newValidators[2]), 9e16);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit systemTransfer(9e17 + 9e15 + 9e4);
+    vm.expectEmit(false, false, false, false, address(validator));
+    emit validatorSetUpdated();
+
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, pack);
+    vm.stopPrank();
+
+    assertEq(newValidators[0].balance, 0);
+    assertEq(newValidators[1].balance, balance + 9e15);
+    assertEq(newValidators[2].balance, balance + 9e16);
+    assertEq(newValidators[3].balance, balance);
+    assertEq(newValidators[4].balance, balance);
+    assertEq(deprecated.balance, balance);
+  }
+
+  // cross chain transfer failed
+  function testComplicateDistribute3() public {
+    address[] memory newValidators = new address[](5);
+    address deprecated = addrSet[addrIdx++];
+    uint256 balance = deprecated.balance;
+    newValidators[0] = address(slash);
+    for (uint256 i = 1; i < 5; ++i) {
+      newValidators[i] = addrSet[addrIdx++];
+    }
+    // mock tokenHub
+    address mockTokenHub = deployCode("MockTokenHub.sol");
+    bytes memory tokenHubCode = address(tokenHub).code;
+    vm.etch(address(tokenHub), mockTokenHub.code);
+    (bool success,) = address(tokenHub).call(abi.encodeWithSignature("setPanicBatchTransferOut(bool)", true));
+    require(success);
+
+    bytes memory pack = encodeOldValidatorSetUpdatePack(0x00, newValidators);
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, pack);
+    vm.stopPrank();
+
+    vm.startPrank(coinbase);
+    validator.deposit{value: 1e16}(newValidators[0]);
+    validator.deposit{value: 1e16}(newValidators[1]);
+    validator.deposit{value: 1e17}(newValidators[2]);
+    validator.deposit{value: 1e18}(newValidators[3]);
+    validator.deposit{value: 1e18}(newValidators[4]);
+    validator.deposit{value: 1e18}(deprecated);
+    validator.deposit{value: 1e5}(newValidators[4]);
+    vm.stopPrank();
+
+    vm.expectEmit(false, false, false, true, address(validator));
+    emit batchTransferFailed(1.8 ether, "panic in batchTransferOut");
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransfer(payable(newValidators[3]), 9e17);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransfer(payable(newValidators[4]), 9e17 + 9e4);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransferFail(payable(newValidators[0]), 9e15);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransfer(payable(newValidators[1]), 9e15);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit directTransfer(payable(newValidators[2]), 9e16);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit systemTransfer(9e17 + 9e15);
+    vm.expectEmit(false, false, false, false, address(validator));
+    emit validatorSetUpdated();
+
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, pack);
+    vm.stopPrank();
+
+    assertEq(newValidators[0].balance, 0);
+    assertEq(newValidators[1].balance, balance + 9e15);
+    assertEq(newValidators[2].balance, balance + 9e16);
+    assertEq(newValidators[3].balance, balance + 9e17);
+    assertEq(newValidators[4].balance, balance + 9e17 + 9e4);
+    assertEq(deprecated.balance, balance);
+
+    // revert token hub
+    vm.etch(address(tokenHub), tokenHubCode);
+  }
+
+  function testJail() public {
+    address[] memory newValidators = new address[](3);
+    for (uint256 i; i < 3; ++i) {
+      newValidators[i] = addrSet[addrIdx++];
+    }
+
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x00, newValidators));
+
+    address[] memory remainVals = validator.getValidators();
+    assertEq(remainVals.length, 3);
+    for (uint256 i; i < 3; ++i) {
+      assertEq(remainVals[i], newValidators[i]);
+    }
+
+    vm.expectEmit(false, false, false, true, address(validator));
+    emit failReasonWithStr("length of jail validators must be one");
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x01, newValidators));
+
+    address[] memory jailVal = new address[](1);
+    jailVal[0] = newValidators[0];
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x01, jailVal));
+
+    remainVals = validator.getValidators();
+    assertEq(remainVals.length, 2);
+    for (uint256 i; i < 2; ++i) {
+      assertEq(remainVals[i], newValidators[i + 1]);
+    }
+
+    jailVal[0] = newValidators[1];
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x01, jailVal));
+    remainVals = validator.getValidators();
+    assertEq(remainVals.length, 1);
+    assertEq(remainVals[0], newValidators[2]);
+
+    jailVal[0] = newValidators[2];
+    validator.handleSynPackage(STAKING_CHANNELID, encodeOldValidatorSetUpdatePack(0x01, jailVal));
+    remainVals = validator.getValidators();
+    assertEq(remainVals.length, 1);
+    assertEq(remainVals[0], newValidators[2]);
+    vm.stopPrank();
+  }
+
+  function testDecodeNewCrossChainPack() public {
+    address[] memory newValidators = new address[](41);
+    bytes[] memory newVoteAddrs = new bytes[](41);
+    for (uint256 i; i < newValidators.length; ++i) {
+      newValidators[i] = addrSet[addrIdx++];
+      newVoteAddrs[i] = abi.encodePacked(newValidators[i]);
+    }
+    vm.startPrank(address(crossChain));
+    validator.handleSynPackage(STAKING_CHANNELID, encodeNewValidatorSetUpdatePack(0x00, newValidators, newVoteAddrs));
+    vm.stopPrank();
+
+    (address[] memory vals, bytes[] memory voteAddrs) = validator.getLivingValidators();
+    for (uint256 i; i < newValidators.length; ++i) {
+      assertEq(voteAddrs[i], abi.encodePacked(vals[i]));
+    }
+  }
+
+  function testDistributeFinalityReward() public {
+    address[] memory addrs = new address[](20);
+    uint256[] memory weights = new uint256[](20);
+    address[] memory vals = validator.getValidators();
+    for (uint256 i; i < 10; ++i) {
+      addrs[i] = vals[i];
+      weights[i] = 1;
+    }
+
+    for (uint256 i = 10; i < 20; ++i) {
+      vals[i] = addrSet[addrIdx++];
+      weights[i] = 1;
+    }
+
+    vm.deal(address(systemReward), 1 ether);
+    vm.expectRevert(bytes("the message sender must be the block producer"));
+    validator.distributeFinalityReward(addrs, weights);
+
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit finalityRewardDeposit(addrs[0], 5e15);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit finalityRewardDeposit(addrs[9], 5e15);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit deprecatedFinalityRewardDeposit(addrs[10], 5e15);
+    vm.expectEmit(true, false, false, true, address(validator));
+    emit deprecatedFinalityRewardDeposit(addrs[19], 5e15);
+    vm.startPrank(address(coinbase));
+    validator.distributeFinalityReward(addrs, weights);
+    vm.stopPrank();
+  }
+}
diff --git a/test/ValidatorSetTool.t.sol b/test/ValidatorSetTool.t.sol
new file mode 100644
index 00000000..2f770e74
--- /dev/null
+++ b/test/ValidatorSetTool.t.sol
@@ -0,0 +1,22 @@
+pragma solidity ^0.8.10;
+
+import "forge-std/Test.sol";
+import "../lib/interface/IBSCValidatorSetTool.sol";
+
+contract ToolTest is Test {
+  BSCValidatorSetTool public tool;
+
+  function setUp() public {
+    // deploy tool contract
+    address toolAddr = deployCode("BSCValidatorSetTool.sol");
+    tool = BSCValidatorSetTool(toolAddr);
+    vm.label(toolAddr, "BSCValidatorSetTool");
+  }
+
+  function testDecodeHeader() public {
+    bytes memory payload =
+      hex"00000000000000000000000000000000000000000000000000002386f26fc10000f85580a04142432d304237000000000000000000000000000000000000000000000000009450ee0de39df3b9c2bc8f8e33d9e4cd03dba9210c8b52b7d2dcc80cd2e40000008b31a17e847807b1bc00000012845f5efcc1";
+    (,, uint256 relayFee,) = tool.decodePayloadHeader(payload);
+    assertEq(relayFee, 10000000000000000);
+  }
+}
diff --git a/validators.js b/validators.js
index 355e0a99..cfe30890 100644
--- a/validators.js
+++ b/validators.js
@@ -10,26 +10,31 @@ const validators = [
     votingPower: 0x0000000000000064
   }
 ];
+const bLSPublicKeys = [
+   "0x85e6972fc98cd3c81d64d40e325acfed44365b97a7567a27939c14dbc7512ddcf54cb1284eb637cfa308ae4e00cb5588",
+];
 
 // ===============  Do not edit below ====
-function generateExtradata(validators) {
+function generateExtradata(validators, bLSPublicKeys) {
   let extraVanity =Buffer.alloc(32);
-  let validatorsBytes = extraDataSerialize(validators);
+  let validatorsBytes = extraDataSerialize(validators, bLSPublicKeys);
   let extraSeal =Buffer.alloc(65);
   return Buffer.concat([extraVanity,validatorsBytes,extraSeal]);
 }
 
-function extraDataSerialize(validators) {
+function extraDataSerialize(validators, bLSPublicKeys) {
   let n = validators.length;
   let arr = [];
   for(let i = 0;i<n;i++){
     let validator = validators[i];
+    let BLSPublicKey = bLSPublicKeys[i];
     arr.push(Buffer.from(web3.utils.hexToBytes(validator.consensusAddr)));
+    arr.push(Buffer.from(web3.utils.hexToBytes(BLSPublicKey)));
   }
   return Buffer.concat(arr);
 }
 
-function validatorUpdateRlpEncode(validators) {
+function validatorUpdateRlpEncode(validators, bLSPublicKeys) {
   let n = validators.length;
   let vals = [];
   for(let i = 0;i<n;i++) {
@@ -38,14 +43,15 @@ function validatorUpdateRlpEncode(validators) {
       validators[i].bscFeeAddr,
       validators[i].feeAddr,
       validators[i].votingPower,
+      bLSPublicKeys[i]
     ]);
   }
   let pkg = [0x00, vals];
   return web3.utils.bytesToHex(RLP.encode(pkg));
 }
 
-extraValidatorBytes = generateExtradata(validators);
-validatorSetBytes = validatorUpdateRlpEncode(validators);
+extraValidatorBytes = generateExtradata(validators, bLSPublicKeys);
+validatorSetBytes = validatorUpdateRlpEncode(validators, bLSPublicKeys);
 
 exports = module.exports = {
   extraValidatorBytes: extraValidatorBytes,
diff --git a/validators.template b/validators.template
index 61e803a7..50c34d44 100644
--- a/validators.template
+++ b/validators.template
@@ -11,26 +11,33 @@ const validators = [
      "votingPower": {{ v.votingPower }},
    },{% endfor %}
 ];
+const bLSPublicKeys = [
+  {% for v in validators %}
+   "{{ v.bLSPublicKey }}",{% endfor %}
+];
 
 // ===============  Do not edit below ====
-function generateExtradata(validators) {
+function generateExtradata(validators, bLSPublicKeys) {
   let extraVanity =Buffer.alloc(32);
-  let validatorsBytes = extraDataSerialize(validators);
+  let validatorsBytes = extraDataSerialize(validators, bLSPublicKeys);
   let extraSeal =Buffer.alloc(65);
   return Buffer.concat([extraVanity,validatorsBytes,extraSeal]);
 }
 
-function extraDataSerialize(validators) {
+function extraDataSerialize(validators, bLSPublicKeys) {
   let n = validators.length;
   let arr = [];
+  arr.push(Buffer.from(web3.utils.hexToBytes("0x" + n.toString(16))));
   for (let i = 0;i<n;i++) {
     let validator = validators[i];
+    let BLSPublicKey = bLSPublicKeys[i];
     arr.push(Buffer.from(web3.utils.hexToBytes(validator.consensusAddr)));
+    arr.push(Buffer.from(web3.utils.hexToBytes(BLSPublicKey)));
   }
   return Buffer.concat(arr);
 }
 
-function validatorUpdateRlpEncode(validators) {
+function validatorUpdateRlpEncode(validators, bLSPublicKeys) {
   let n = validators.length;
   let vals = [];
   for (let i = 0;i<n;i++) {
@@ -39,14 +46,15 @@ function validatorUpdateRlpEncode(validators) {
       validators[i].bscFeeAddr,
       validators[i].feeAddr,
       validators[i].votingPower,
+      bLSPublicKeys[i]
     ]);
   }
   let pkg = [0x00, vals];
   return web3.utils.bytesToHex(RLP.encode(pkg));
 }
 
-extraValidatorBytes = generateExtradata(validators);
-validatorSetBytes = validatorUpdateRlpEncode(validators);
+extraValidatorBytes = generateExtradata(validators, bLSPublicKeys);
+validatorSetBytes = validatorUpdateRlpEncode(validators, bLSPublicKeys);
 
 exports = module.exports = {
   extraValidatorBytes: extraValidatorBytes,