diff --git a/.gitmodules b/.gitmodules
index ba4d322..3d98e21 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -12,4 +12,4 @@
 	url = https://github.com/transmissions11/solmate
 [submodule "icy-btc/lib/solady"]
 	path = icy-btc/lib/solady
-	url = https://github.com/vectorized/solady
+	url = https://github.com/vectorized/solady
\ No newline at end of file
diff --git a/memo-nft/.editorconfig b/memo-nft/.editorconfig
new file mode 100644
index 0000000..746ae31
--- /dev/null
+++ b/memo-nft/.editorconfig
@@ -0,0 +1,19 @@
+# EditorConfig  http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# All files
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.sol]
+indent_size = 4
+
+[*.tree]
+indent_size = 1
diff --git a/memo-nft/.env.example b/memo-nft/.env.example
new file mode 100644
index 0000000..c15991c
--- /dev/null
+++ b/memo-nft/.env.example
@@ -0,0 +1,4 @@
+ETHERSCAN_API_KEY=
+BASE_SEPOLIA_RPC=
+BASE_RPC=
+WALLET_PRIVATE_KEY=
\ No newline at end of file
diff --git a/memo-nft/.gitignore b/memo-nft/.gitignore
new file mode 100644
index 0000000..532f85f
--- /dev/null
+++ b/memo-nft/.gitignore
@@ -0,0 +1,20 @@
+# directories
+cache
+coverage
+node_modules
+out
+
+# files
+*.env
+*.log
+.DS_Store
+.pnp.*
+lcov.info
+package-lock.json
+pnpm-lock.yaml
+yarn.lock
+
+# broadcasts
+# !broadcast
+# broadcast/*
+# broadcast/*/31337/
diff --git a/memo-nft/.prettierignore b/memo-nft/.prettierignore
new file mode 100644
index 0000000..3996d20
--- /dev/null
+++ b/memo-nft/.prettierignore
@@ -0,0 +1,17 @@
+# directories
+broadcast
+cache
+coverage
+node_modules
+out
+
+# files
+*.env
+*.log
+.DS_Store
+.pnp.*
+bun.lockb
+lcov.info
+package-lock.json
+pnpm-lock.yaml
+yarn.lock
diff --git a/memo-nft/.prettierrc.yml b/memo-nft/.prettierrc.yml
new file mode 100644
index 0000000..8e7d153
--- /dev/null
+++ b/memo-nft/.prettierrc.yml
@@ -0,0 +1,3 @@
+printWidth: 120
+proseWrap: "always"
+trailingComma: "all"
diff --git a/memo-nft/.solhint.json b/memo-nft/.solhint.json
new file mode 100644
index 0000000..fe78add
--- /dev/null
+++ b/memo-nft/.solhint.json
@@ -0,0 +1,14 @@
+{
+  "extends": "solhint:recommended",
+  "rules": {
+    "code-complexity": ["error", 8],
+    "compiler-version": ["error", ">=0.8.28"],
+    "func-name-mixedcase": "off",
+    "func-visibility": ["error", { "ignoreConstructors": true }],
+    "max-line-length": ["error", 120],
+    "named-parameters-mapping": "warn",
+    "no-console": "off",
+    "not-rely-on-time": "off",
+    "one-contract-per-file": "off"
+  }
+}
diff --git a/memo-nft/README.md b/memo-nft/README.md
new file mode 100644
index 0000000..387c46c
--- /dev/null
+++ b/memo-nft/README.md
@@ -0,0 +1,57 @@
+# This repo is an implementation of the Memo NFT contract.
+
+## Contract
+
+- [DwarvesMemo.sol](./src/DwarvesMemo.sol)
+
+## Overview
+We're developing an upgradable ERC1155 smart contract that integrates with Arweave for storing NFT metadata. This contract will allow the owner to create new NFT types mapped to Arweave transaction IDs, while enabling anyone to mint tokens of these established types.
+
+### Features
+- Upgradable
+- ERC1155
+- Integrates with Arweave
+- ...
+
+### Smart Contract Functionalities
+1. `createTokenType (onlyOwner)` -> Maps a new NFT ID to an Arweave transaction ID
+2. `updateTokenType (onlyOwner)` -> Updates the Arweave transaction ID for an existing NFT ID
+3. `mintNFT (public)` -> Mints a new NFT token
+4. `readNFT (public)` -> Returns the Arweave gateway URL for the token's metadata
+5. `getUniqueMinterCount (public)` -> Returns the total number of unique addresses that have minted at least one NFT
+
+## Usage
+### Prerequisites
+- Install `Bun` CLI (https://bun.sh/docs/installation)
+- Install `Foundry` (https://getfoundry.sh/)
+- Install dependencies: `bun install`
+- Update `.env` file with your own values (see `.env.example`)
+
+### Available commands
+1. Build commands
+- `bun run build` -> Build the contract (always run this before deploying)
+
+2. Deploy commands
+- `bun run deploy:testnet` -> Deploy to Base Sepolia
+- `bun run deploy:mainnet` -> Deploy to Base Mainnet
+
+3. Upgrade commands
+- `bun run upgrade:testnet` -> Upgrade on Base Sepolia
+- `bun run upgrade:mainnet` -> Upgrade on Base Mainnet
+
+4. Other commands
+- `bun run test` -> Run tests
+- `bun run lint` -> Run lint
+- `bun run format` -> Format code
+
+## Latest Deployments
+1. Testnet
+- [Proxy](https://sepolia.basescan.org/address/0xb1e052156676750D193D800D7D91eA0C7cEeAdF0)
+
+2. Mainnet
+- ...
+
+## Resources
+- [Arweave Integration](https://academy.developerdao.com/tracks/arweave-101/2)
+- [Foundry Book](https://book.getfoundry.sh/)
+- [Foundry Template](https://github.com/PaulRBerg/foundry-template)
\ No newline at end of file
diff --git a/memo-nft/broadcast/DeployScript.s.sol/8453/run-1742959126.json b/memo-nft/broadcast/DeployScript.s.sol/8453/run-1742959126.json
new file mode 100644
index 0000000..6f8df8f
--- /dev/null
+++ b/memo-nft/broadcast/DeployScript.s.sol/8453/run-1742959126.json
@@ -0,0 +1,190 @@
+{
+  "transactions": [
+    {
+      "hash": "0x6688ded770d780e68d27d66c9dd172fc41317a01e7fd49eccebe3422c8288c9e",
+      "transactionType": "CREATE",
+      "contractName": "DwarvesMemo",
+      "contractAddress": "0x7c842f982a02f665ed67e3c685c507d772a1d8aa",
+      "function": null,
+      "arguments": null,
+      "transaction": {
+        "from": "0xd7d9b9e4dd263f67c777decb29456386c0cec698",
+        "gas": "0x3b17f7",
+        "value": "0x0",
+        "input": 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+          "blockNumber": "0x1ac8a8d",
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+          "transactionHash": "0x7d0b789194e71b4897b8aaf25e2caa5544d2e0a94456c70ed1c01f403d153a64",
+          "transactionIndex": "0x7f",
+          "logIndex": "0xd6",
+          "removed": false
+        },
+        {
+          "address": "0x07f3ed54e0b2d07cc522c4fc12eba80e6d3a8deb",
+          "topics": [
+            "0x2f8788117e7eff1d82e926ec794901d17c78024a50270940304540a733656f0d",
+            "0x46bc17a0fe87d21d3032006471bcf37ce466e2647ce3c29105bf282a21995984",
+            "0x000000000000000000000000d7d9b9e4dd263f67c777decb29456386c0cec698",
+            "0x000000000000000000000000d7d9b9e4dd263f67c777decb29456386c0cec698"
+          ],
+          "data": "0x",
+          "blockHash": "0x6d77aec29f2e10bcb63393889886e1d31b6206f7f1f5836cb06992d2f9c9e476",
+          "blockNumber": "0x1ac8a8d",
+          "blockTimestamp": "0x67e371fd",
+          "transactionHash": "0x7d0b789194e71b4897b8aaf25e2caa5544d2e0a94456c70ed1c01f403d153a64",
+          "transactionIndex": "0x7f",
+          "logIndex": "0xd7",
+          "removed": false
+        },
+        {
+          "address": "0x07f3ed54e0b2d07cc522c4fc12eba80e6d3a8deb",
+          "topics": [
+            "0xc7f505b2f371ae2175ee4913f4499e1f2633a7b5936321eed1cdaeb6115181d2"
+          ],
+          "data": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "blockHash": "0x6d77aec29f2e10bcb63393889886e1d31b6206f7f1f5836cb06992d2f9c9e476",
+          "blockNumber": "0x1ac8a8d",
+          "blockTimestamp": "0x67e371fd",
+          "transactionHash": "0x7d0b789194e71b4897b8aaf25e2caa5544d2e0a94456c70ed1c01f403d153a64",
+          "transactionIndex": "0x7f",
+          "logIndex": "0xd8",
+          "removed": false
+        }
+      ],
+      "logsBloom": "0x00000004000000000000000001000000400000020000000000800000000000000000000000000000800000000000000000000010000000000000000000000000000000020000000000000400000002000001000000000000000000000000000000000000020000000000000000000800000000008000000000000004000000400000000000000000000800000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000001000000000000000000020000100000000000000000000000100000004000100000000000020000000000000000000000000000010100000000000000000000000000000000000",
+      "type": "0x2",
+      "transactionHash": "0x7d0b789194e71b4897b8aaf25e2caa5544d2e0a94456c70ed1c01f403d153a64",
+      "transactionIndex": "0x7f",
+      "blockHash": "0x6d77aec29f2e10bcb63393889886e1d31b6206f7f1f5836cb06992d2f9c9e476",
+      "blockNumber": "0x1ac8a8d",
+      "gasUsed": "0x5d55a",
+      "effectiveGasPrice": "0x2cbdab",
+      "from": "0xd7d9b9e4dd263f67c777decb29456386c0cec698",
+      "to": null,
+      "contractAddress": "0x07f3ed54e0b2d07cc522c4fc12eba80e6d3a8deb",
+      "l1BaseFeeScalar": "0x8dd",
+      "l1BlobBaseFee": "0x4",
+      "l1BlobBaseFeeScalar": "0x101c12",
+      "l1Fee": "0x32d3aa399",
+      "l1GasPrice": "0x1ac6c53a",
+      "l1GasUsed": "0x3449"
+    }
+  ],
+  "libraries": [],
+  "pending": [],
+  "returns": {},
+  "timestamp": 1742959126,
+  "chain": 8453,
+  "commit": "cd9d7e4"
+}
\ No newline at end of file
diff --git a/memo-nft/broadcast/DeployScript.s.sol/8453/run-latest.json b/memo-nft/broadcast/DeployScript.s.sol/8453/run-latest.json
new file mode 100644
index 0000000..6f8df8f
--- /dev/null
+++ b/memo-nft/broadcast/DeployScript.s.sol/8453/run-latest.json
@@ -0,0 +1,190 @@
+{
+  "transactions": [
+    {
+      "hash": "0x6688ded770d780e68d27d66c9dd172fc41317a01e7fd49eccebe3422c8288c9e",
+      "transactionType": "CREATE",
+      "contractName": "DwarvesMemo",
+      "contractAddress": "0x7c842f982a02f665ed67e3c685c507d772a1d8aa",
+      "function": null,
+      "arguments": null,
+      "transaction": {
+        "from": "0xd7d9b9e4dd263f67c777decb29456386c0cec698",
+        "gas": "0x3b17f7",
+        "value": "0x0",
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+          ],
+          "data": "0x",
+          "blockHash": "0x6d77aec29f2e10bcb63393889886e1d31b6206f7f1f5836cb06992d2f9c9e476",
+          "blockNumber": "0x1ac8a8d",
+          "blockTimestamp": "0x67e371fd",
+          "transactionHash": "0x7d0b789194e71b4897b8aaf25e2caa5544d2e0a94456c70ed1c01f403d153a64",
+          "transactionIndex": "0x7f",
+          "logIndex": "0xd6",
+          "removed": false
+        },
+        {
+          "address": "0x07f3ed54e0b2d07cc522c4fc12eba80e6d3a8deb",
+          "topics": [
+            "0x2f8788117e7eff1d82e926ec794901d17c78024a50270940304540a733656f0d",
+            "0x46bc17a0fe87d21d3032006471bcf37ce466e2647ce3c29105bf282a21995984",
+            "0x000000000000000000000000d7d9b9e4dd263f67c777decb29456386c0cec698",
+            "0x000000000000000000000000d7d9b9e4dd263f67c777decb29456386c0cec698"
+          ],
+          "data": "0x",
+          "blockHash": "0x6d77aec29f2e10bcb63393889886e1d31b6206f7f1f5836cb06992d2f9c9e476",
+          "blockNumber": "0x1ac8a8d",
+          "blockTimestamp": "0x67e371fd",
+          "transactionHash": "0x7d0b789194e71b4897b8aaf25e2caa5544d2e0a94456c70ed1c01f403d153a64",
+          "transactionIndex": "0x7f",
+          "logIndex": "0xd7",
+          "removed": false
+        },
+        {
+          "address": "0x07f3ed54e0b2d07cc522c4fc12eba80e6d3a8deb",
+          "topics": [
+            "0xc7f505b2f371ae2175ee4913f4499e1f2633a7b5936321eed1cdaeb6115181d2"
+          ],
+          "data": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "blockHash": "0x6d77aec29f2e10bcb63393889886e1d31b6206f7f1f5836cb06992d2f9c9e476",
+          "blockNumber": "0x1ac8a8d",
+          "blockTimestamp": "0x67e371fd",
+          "transactionHash": "0x7d0b789194e71b4897b8aaf25e2caa5544d2e0a94456c70ed1c01f403d153a64",
+          "transactionIndex": "0x7f",
+          "logIndex": "0xd8",
+          "removed": false
+        }
+      ],
+      "logsBloom": "0x00000004000000000000000001000000400000020000000000800000000000000000000000000000800000000000000000000010000000000000000000000000000000020000000000000400000002000001000000000000000000000000000000000000020000000000000000000800000000008000000000000004000000400000000000000000000800000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000001000000000000000000020000100000000000000000000000100000004000100000000000020000000000000000000000000000010100000000000000000000000000000000000",
+      "type": "0x2",
+      "transactionHash": "0x7d0b789194e71b4897b8aaf25e2caa5544d2e0a94456c70ed1c01f403d153a64",
+      "transactionIndex": "0x7f",
+      "blockHash": "0x6d77aec29f2e10bcb63393889886e1d31b6206f7f1f5836cb06992d2f9c9e476",
+      "blockNumber": "0x1ac8a8d",
+      "gasUsed": "0x5d55a",
+      "effectiveGasPrice": "0x2cbdab",
+      "from": "0xd7d9b9e4dd263f67c777decb29456386c0cec698",
+      "to": null,
+      "contractAddress": "0x07f3ed54e0b2d07cc522c4fc12eba80e6d3a8deb",
+      "l1BaseFeeScalar": "0x8dd",
+      "l1BlobBaseFee": "0x4",
+      "l1BlobBaseFeeScalar": "0x101c12",
+      "l1Fee": "0x32d3aa399",
+      "l1GasPrice": "0x1ac6c53a",
+      "l1GasUsed": "0x3449"
+    }
+  ],
+  "libraries": [],
+  "pending": [],
+  "returns": {},
+  "timestamp": 1742959126,
+  "chain": 8453,
+  "commit": "cd9d7e4"
+}
\ No newline at end of file
diff --git a/memo-nft/bun.lockb b/memo-nft/bun.lockb
new file mode 100755
index 0000000..e0513f3
Binary files /dev/null and b/memo-nft/bun.lockb differ
diff --git a/memo-nft/foundry.toml b/memo-nft/foundry.toml
new file mode 100644
index 0000000..737ce95
--- /dev/null
+++ b/memo-nft/foundry.toml
@@ -0,0 +1,37 @@
+# Full reference https://github.com/foundry-rs/foundry/tree/master/crates/config
+
+[profile.default]
+  auto_detect_solc = false
+  block_timestamp = 1_738_368_000 # Feb 1, 2025 at 00:00 GMT
+  bytecode_hash = "none"
+  fuzz = { runs = 1_000 }
+  gas_reports = ["*"]
+  optimizer = true
+  optimizer_runs = 10_000
+  out = "out"
+  script = "script"
+  solc = "0.8.29"
+  src = "src"
+  test = "tests"
+
+[profile.ci]
+  fuzz = { runs = 10_000 }
+  verbosity = 4
+
+[rpc_endpoints]
+  base = "${BASE_RPC}"
+  base_sepolia = "${BASE_SEPOLIA_RPC}"
+
+[etherscan]
+  base = { key = "${BASESCAN_API_KEY}" }
+  base_sepolia = { key = "${BASESCAN_API_KEY}" }
+
+[fmt]
+  bracket_spacing = true
+  int_types = "long"
+  line_length = 120
+  multiline_func_header = "all"
+  number_underscore = "thousands"
+  quote_style = "double"
+  tab_width = 4
+  wrap_comments = true
diff --git a/memo-nft/package.json b/memo-nft/package.json
new file mode 100644
index 0000000..bdac7bc
--- /dev/null
+++ b/memo-nft/package.json
@@ -0,0 +1,31 @@
+{
+  "name": "@df/memo-nft",
+  "description": "Memo NFT",
+  "version": "1.0.0",
+  "dependencies": {
+    "@openzeppelin/contracts": "^5.2.0",
+    "@openzeppelin/foundry-upgrades": "OpenZeppelin/openzeppelin-foundry-upgrades",
+    "openzeppelin-solidity": "OpenZeppelin/openzeppelin-contracts-upgradeable"
+  },
+  "devDependencies": {
+    "forge-std": "github:foundry-rs/forge-std#v1.8.1",
+    "prettier": "^3.0.0",
+    "solhint": "^3.6.2"
+  },
+  "private": true,
+  "scripts": {
+    "clean": "rm -rf cache out",
+    "build": "forge build",
+    "lint": "bun run lint:sol && bun run prettier:check",
+    "lint:sol": "forge fmt --check && bun solhint \"{script,src,tests}/**/*.sol\"",
+    "prettier:check": "prettier --check \"**/*.{json,md,yml}\" --ignore-path \".prettierignore\"",
+    "prettier:write": "prettier --write \"**/*.{json,md,yml}\" --ignore-path \".prettierignore\"",
+    "test": "forge test -vvv",
+    "test:coverage": "forge coverage",
+    "test:coverage:report": "forge coverage --report lcov && genhtml lcov.info --branch-coverage --output-dir coverage",
+    "deploy:testnet": "forge script script/DeployScript.s.sol:DeployScript --rpc-url base_sepolia --private-key $(grep WALLET_PRIVATE_KEY .env | cut -d '=' -f2) --broadcast --verify -vvvv",
+    "upgrade:testnet": "forge script script/UpgradeScript.s.sol:UpgradeScript --rpc-url base_sepolia --private-key $(grep WALLET_PRIVATE_KEY .env | cut -d '=' -f2) --broadcast --verify -vvvv",
+    "deploy:mainnet": "forge script script/DeployScript.s.sol:DeployScript --rpc-url base --private-key $(grep WALLET_PRIVATE_KEY .env | cut -d '=' -f2) --broadcast --verify -vvvv",
+    "upgrade:mainnet": "forge script script/UpgradeScript.s.sol:UpgradeScript --rpc-url base --private-key $(grep WALLET_PRIVATE_KEY .env | cut -d '=' -f2) --broadcast --verify -vvvv"
+  }
+}
diff --git a/memo-nft/remappings.txt b/memo-nft/remappings.txt
new file mode 100644
index 0000000..32e88dd
--- /dev/null
+++ b/memo-nft/remappings.txt
@@ -0,0 +1,3 @@
+@openzeppelin/contracts/=node_modules/@openzeppelin/contracts/
+forge-std/=node_modules/forge-std/
+@openzeppelin/contracts-upgradeable/=node_modules/openzeppelin-solidity/contracts
\ No newline at end of file
diff --git a/memo-nft/script/DeployScript.s.sol b/memo-nft/script/DeployScript.s.sol
new file mode 100644
index 0000000..b813dca
--- /dev/null
+++ b/memo-nft/script/DeployScript.s.sol
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.29;
+
+import "forge-std/src/Script.sol";
+import "../src/DwarvesMemo.sol";
+import "@openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol";
+
+// Notes:
+// Replace `INITIAL_URI` with the initial URI for the NFT metadata
+contract DeployScript is Script {
+    function run() external {
+        vm.startBroadcast();
+
+        string memory INITIAL_URI = "https://example.com/metadata/{id}.json";
+
+        // Deploy implementation contract
+        DwarvesMemo implementation = new DwarvesMemo();
+
+        // Deploy proxy contract
+        new ERC1967Proxy(
+            address(implementation),
+            abi.encodeWithSelector(DwarvesMemo.initialize.selector, INITIAL_URI)
+        );
+
+        vm.stopBroadcast();
+    }
+}
\ No newline at end of file
diff --git a/memo-nft/script/UpgradeScript.s.sol b/memo-nft/script/UpgradeScript.s.sol
new file mode 100644
index 0000000..9d9996d
--- /dev/null
+++ b/memo-nft/script/UpgradeScript.s.sol
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.29;
+
+import "forge-std/src/Script.sol";
+import "../src/DwarvesMemo.sol";
+
+// Notes: 
+// 1. Replace `PROXY_ADDRESS` with the address of the proxy contract you want to upgrade before running the script
+// 2. Replace `INITIAL_URI` with the initial URI for the NFT metadata
+contract UpgradeScript is Script {
+    function run() external {
+        vm.startBroadcast();
+
+        // TODO: Replace with the address of the latest proxy contract you want to upgrade
+        address PROXY_ADDRESS = 0x07f3ed54e0b2D07cC522c4FC12EbA80E6D3A8DeB;
+
+        // Deploy the new implementation contract
+        DwarvesMemo newImplementation = new DwarvesMemo();
+
+        DwarvesMemo proxy = DwarvesMemo(address(PROXY_ADDRESS));
+        bytes memory data = "";
+        proxy.upgradeToAndCall(
+            address(newImplementation),
+            data
+        );
+
+        vm.stopBroadcast();
+    }
+}
diff --git a/memo-nft/src/DwarvesMemo.sol b/memo-nft/src/DwarvesMemo.sol
new file mode 100644
index 0000000..a2bf845
--- /dev/null
+++ b/memo-nft/src/DwarvesMemo.sol
@@ -0,0 +1,209 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.29;
+
+import "@openzeppelin/contracts-upgradeable/token/ERC1155/ERC1155Upgradeable.sol";
+import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
+import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
+import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
+import "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
+
+contract DwarvesMemo is
+    Initializable,
+    ERC1155Upgradeable,
+    OwnableUpgradeable,
+    UUPSUpgradeable,
+    AccessControlUpgradeable
+{
+    /*//////////////////////////////////////////////////////////////
+                                 EVENTS
+    //////////////////////////////////////////////////////////////*/
+
+    event TokenTypeCreated(uint256 indexed tokenId, string arweaveTxId);
+    event TokenTypeUpdated(uint256 indexed tokenId, string newArweaveTxId);
+    event TokenMinted(address indexed to, uint256 indexed tokenId, uint256 amount);
+    event ArweaveGatewayUrlUpdated(string newArweaveGatewayUrl);
+
+    /*//////////////////////////////////////////////////////////////
+                                 STATE VARIABLES
+    //////////////////////////////////////////////////////////////*/
+
+    string public _arweaveGatewayUrl; // The Arweave gateway URL
+    mapping(string => uint256) private _arweaveTxIdToTokenId; // Maps Arweave transaction ID to tokenId
+    mapping(uint256 => string) private _tokenIdToArweaveTxId; // Maps tokenId to Arweave transaction ID
+    mapping(address => bool) private _uniqueMinters; // Tracks unique minters
+    uint256 private _uniqueMinterCount; // Counts unique minters
+    uint256 private _nextTokenId; // Auto-incrementing token ID counter
+    mapping(uint256 => uint256) private _tokenMintCount; // Tracks total mints per tokenId
+
+    /*//////////////////////////////////////////////////////////////
+                                 CONSTANTS
+    //////////////////////////////////////////////////////////////*/
+    bytes32 public constant NFT_CREATOR_ROLE = keccak256("NFT_CREATOR_ROLE");
+
+    /*//////////////////////////////////////////////////////////////
+                                 CONSTRUCTOR
+    //////////////////////////////////////////////////////////////*/
+
+    /// @custom:oz-upgrades-unsafe-allow constructor
+    constructor() {
+        _disableInitializers(); // Disables initializer on implementation contract
+    }
+
+    /**
+     * @dev Initializes the contract (replaces constructor for upgradeable contracts).
+     * @param uri The base URI for the ERC1155 token.
+     */
+    function initialize(string memory uri) public initializer {
+        __ERC1155_init(uri);
+        __Ownable_init(msg.sender);
+        __UUPSUpgradeable_init();
+        __AccessControl_init();
+
+        // Grant the contract deployer the default admin role and minter role
+        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
+        _grantRole(NFT_CREATOR_ROLE, msg.sender);
+
+        // Initialize state variables
+        _nextTokenId = 1;
+        _arweaveGatewayUrl = "https://arweave.developerdao.com/";
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                 ADMIN FUNCTIONS
+    //////////////////////////////////////////////////////////////*/
+
+    function grantCreateNftRole(address account) external onlyRole(DEFAULT_ADMIN_ROLE) {
+        grantRole(NFT_CREATOR_ROLE, account);
+    }
+
+    function setArweaveGatewayUrl(string memory newArweaveGatewayUrl) external onlyRole(DEFAULT_ADMIN_ROLE) {
+        _arweaveGatewayUrl = newArweaveGatewayUrl;
+        emit ArweaveGatewayUrlUpdated(newArweaveGatewayUrl);
+    }
+
+    /**
+     * @dev Creates a new NFT type based on an Arweave transaction ID.
+     * @param arweaveTxId The Arweave transaction ID for the NFT metadata.
+     * @return The automatically assigned token ID.
+     */
+    function createTokenType(string memory arweaveTxId) external onlyRole(NFT_CREATOR_ROLE) returns (uint256) {
+        require(bytes(arweaveTxId).length > 0, "Arweave transaction ID cannot be empty");
+        require(_arweaveTxIdToTokenId[arweaveTxId] == 0, "Arweave transaction ID already in use");
+
+        uint256 tokenId = _nextTokenId++;
+        _tokenIdToArweaveTxId[tokenId] = arweaveTxId;
+        _arweaveTxIdToTokenId[arweaveTxId] = tokenId;
+
+        emit TokenTypeCreated(tokenId, arweaveTxId);
+        return tokenId;
+    }
+
+    /**
+     * @dev Updates the Arweave transaction ID for an existing token ID.
+     * @param tokenId The token ID to update.
+     * @param newArweaveTxId The new Arweave transaction ID.
+     */
+    function updateTokenType(uint256 tokenId, string memory newArweaveTxId) external onlyRole(NFT_CREATOR_ROLE) {
+        require(bytes(newArweaveTxId).length > 0, "Arweave transaction ID cannot be empty");
+        string memory oldArweaveTxId = _tokenIdToArweaveTxId[tokenId];
+        require(bytes(oldArweaveTxId).length > 0, "Token type does not exist");
+        require(_arweaveTxIdToTokenId[newArweaveTxId] == 0, "New Arweave transaction ID already in use");
+
+        // Update mappings
+        _arweaveTxIdToTokenId[oldArweaveTxId] = 0;
+        _tokenIdToArweaveTxId[tokenId] = newArweaveTxId;
+        _arweaveTxIdToTokenId[newArweaveTxId] = tokenId;
+
+        emit TokenTypeUpdated(tokenId, newArweaveTxId);
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                 PUBLIC FUNCTIONS
+    //////////////////////////////////////////////////////////////*/
+
+    /**
+     * @dev Returns the Arweave gateway URL for the token's metadata.
+     * @param tokenId The token ID.
+     * @return The Arweave gateway URL.
+     */
+    function readNFT(uint256 tokenId) external view returns (string memory) {
+        string memory arweaveTxId = _tokenIdToArweaveTxId[tokenId];
+        require(bytes(arweaveTxId).length > 0, "Token type does not exist");
+        return string(abi.encodePacked(_arweaveGatewayUrl, arweaveTxId));
+    }
+
+    /**
+     * @dev Returns the token ID for a given Arweave transaction ID.
+     * @param arweaveTxId The Arweave transaction ID.
+     * @return The corresponding token ID.
+     */
+    function getTokenId(string memory arweaveTxId) external view returns (uint256) {
+        uint256 tokenId = _arweaveTxIdToTokenId[arweaveTxId];
+        require(tokenId != 0, "Token type does not exist");
+        return tokenId;
+    }
+
+    /**
+     * @dev Mints tokens of an existing NFT type.
+     * @param tokenId The token ID of the NFT type to mint.
+     * @param amount The number of tokens to mint.
+     */
+    function mintNFT(uint256 tokenId, uint256 amount) external {
+        require(
+            bytes(_tokenIdToArweaveTxId[tokenId]).length > 0,
+            "Token type does not exist"
+        );
+        _mint(msg.sender, tokenId, amount, "");
+
+        // Update mint count for this tokenId
+        _tokenMintCount[tokenId] += amount;
+
+        // Track unique minters
+        if (!_uniqueMinters[msg.sender]) {
+            _uniqueMinters[msg.sender] = true;
+            _uniqueMinterCount++;
+        }
+
+        emit TokenMinted(msg.sender, tokenId, amount);
+    }
+
+    /**
+     * @dev Returns the total number of tokens minted for a specific tokenId.
+     * @param tokenId The token ID to query.
+     * @return The total number of tokens minted for the given tokenId.
+     */
+    function getMintCountByTokenId(uint256 tokenId) external view returns (uint256) {
+        require(bytes(_tokenIdToArweaveTxId[tokenId]).length > 0, "Token type does not exist");
+        return _tokenMintCount[tokenId];
+    }
+
+    /**
+     * @dev Returns the total number of unique addresses that have minted at least one NFT.
+     * @return The count of unique minters.
+     */
+    function getUniqueMinterCount() external view returns (uint256) {
+        return _uniqueMinterCount;
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                 UUPS UPGRADE AUTHORIZATION
+    //////////////////////////////////////////////////////////////*/
+
+    /**
+     * @dev Override to restrict upgrades to the owner.
+     */
+    function _authorizeUpgrade(address newImplementation) internal override onlyOwner {}
+
+    /**
+     * @dev See {IERC165-supportsInterface}.
+     */
+    function supportsInterface(bytes4 interfaceId)
+        public
+        view
+        virtual
+        override(ERC1155Upgradeable, AccessControlUpgradeable)
+        returns (bool)
+    {
+        return super.supportsInterface(interfaceId);
+    }
+}
diff --git a/memo-nft/tests/DwarvesMemo.t.sol b/memo-nft/tests/DwarvesMemo.t.sol
new file mode 100644
index 0000000..23ff13f
--- /dev/null
+++ b/memo-nft/tests/DwarvesMemo.t.sol
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.29;
+
+import "forge-std/src/Test.sol";
+import "../src/DwarvesMemo.sol";
+import "@openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol";
+
+contract DwarvesMemoTest is Test {
+    DwarvesMemo public implementation;
+    DwarvesMemo public proxy;
+    address owner = address(0x123);
+    address user = address(0x456);
+
+    function setUp() public {
+        // Deploy implementation contract
+        implementation = new DwarvesMemo();
+
+        // Deploy proxy contract and initialize it
+        vm.prank(owner);
+        proxy = DwarvesMemo(
+            address(
+                new ERC1967Proxy(
+                    address(implementation),
+                    abi.encodeWithSelector(DwarvesMemo.initialize.selector, "https://example.com/metadata/{id}.json")
+                )
+            )
+        );
+    }
+
+    // Test Admin Functions
+
+    function test_CreateTokenType() public {
+        vm.prank(owner);
+        uint256 tokenId = proxy.createTokenType("arweave-tx-id-123");
+        assertEq(tokenId, 1, "First token ID should be 1");
+    }
+
+    function test_CreateTokenType_RevertIfNotOwner() public {
+        vm.prank(user);
+        vm.expectRevert();
+        proxy.createTokenType("arweave-tx-id-123");
+    }
+
+    function test_UpdateTokenType() public {
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+
+        vm.prank(owner);
+        proxy.updateTokenType(tokenId, "new-arweave-tx-id");
+
+        string memory arweaveUrl = proxy.readNFT(tokenId);
+        assertEq(arweaveUrl, "https://arweave.developerdao.com/new-arweave-tx-id", "Arweave URL should be updated");
+    }
+
+    function test_UpdateTokenType_RevertIfNotOwner() public {
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+
+        vm.prank(user);
+        vm.expectRevert();
+        proxy.updateTokenType(tokenId, "new-arweave-tx-id");
+    }
+
+    function test_UpdateTokenType_RevertIfTokenDoesNotExist() public {
+        vm.prank(owner);
+        vm.expectRevert();
+        proxy.updateTokenType(1, "new-arweave-tx-id");
+    }
+
+    // Test Public Functions
+
+    function test_ReadNFT() public {
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+        string memory arweaveUrl = proxy.readNFT(tokenId);
+        assertEq(arweaveUrl, "https://arweave.developerdao.com/arweave-tx-id-123", "Arweave URL should match");
+    }
+
+    function test_ReadNFT_RevertIfTokenDoesNotExist() public {
+        vm.expectRevert("Token type does not exist");
+        proxy.readNFT(1);
+    }
+
+    function test_GetTokenId() public {
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+        assertEq(tokenId, 1, "Token ID should be 1");
+    }
+
+    function test_MintNFT() public {
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+        
+        vm.prank(user);
+        proxy.mintNFT(tokenId, 1);
+
+        assertEq(proxy.balanceOf(user, tokenId), 1, "User should have 1 token");
+        assertEq(proxy.getUniqueMinterCount(), 1, "Unique minters count should be 1");
+    }
+
+    function test_MintNFT_RevertIfTokenDoesNotExist() public {
+        vm.prank(user);
+        vm.expectRevert("Token type does not exist");
+        proxy.mintNFT(1, 10);
+    }
+
+    function test_GetUniqueMinterCount() public {
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+
+        vm.prank(user);
+        proxy.mintNFT(tokenId, 1);
+
+        vm.prank(address(0x789));
+        proxy.mintNFT(tokenId, 1);
+
+        assertEq(proxy.getUniqueMinterCount(), 2, "Unique minters count should be 2");
+    }
+
+    function test_SetArweaveGatewayUrl() public {
+        vm.prank(owner);
+        proxy.setArweaveGatewayUrl("https://new-gateway.com/");
+
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+        string memory arweaveUrl = proxy.readNFT(tokenId);
+        assertEq(arweaveUrl, "https://new-gateway.com/arweave-tx-id-123", "Arweave URL should use new gateway");
+    }
+
+    // Test minting multiple times from the same address
+    function test_MintNFT_MultipleMints() public {
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+        
+        vm.prank(user);
+        proxy.mintNFT(tokenId, 5);
+        
+        vm.prank(user);
+        proxy.mintNFT(tokenId, 10);
+        
+        assertEq(proxy.balanceOf(user, tokenId), 15, "User should have 15 tokens total");
+        assertEq(proxy.getUniqueMinterCount(), 1, "Unique minters count should still be 1");
+    }
+
+    // Test minting with zero amount
+    function test_MintNFT_ZeroAmount() public {
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+        
+        vm.prank(user);
+        proxy.mintNFT(tokenId, 0);
+        
+        assertEq(proxy.balanceOf(user, tokenId), 0, "User should have 0 tokens");
+        assertEq(proxy.getUniqueMinterCount(), 1, "Unique minters count should be 1");
+    }
+
+    // Test updating token type to empty Arweave transaction ID
+    function test_UpdateTokenType_ToEmptyArweaveTxId() public {
+        vm.prank(owner);
+        proxy.createTokenType("arweave-tx-id-123");
+
+        uint256 tokenId = proxy.getTokenId("arweave-tx-id-123");
+        
+        vm.prank(owner);
+        vm.expectRevert("Arweave transaction ID cannot be empty");
+        proxy.updateTokenType(tokenId, "");
+    }
+}
\ No newline at end of file