CYCON - ERC20 Token Smart Contract

This is smart contract source code deployed on the Klaytn network as CYCON Ttoken. Here is token smart contract url: https://klaytnscope.com/account/0xe4a1bd45cddbbd5d9f605b08ed13a94b6b6ab5aa?tabId=txList

Description

This smart contract provides an implementation of the ERC20 standard, widely used for creating and managing tokens on the EVM based blockchain. It includes the basic functionality necessary for a compliant ERC20 token, such as managing balances, transferring tokens, and handling allowances.

Components

1. Context: An abstract contract providing information about the transaction context, particularly the sender. It's essential for handling meta-transactions.

2. IERC20 Interface: Defines the standard functions and events according to the ERC20 specification.

3. IERC20Metadata Interface: An extension of IERC20, including additional functions to retrieve token metadata like name, symbol, and decimals.

4. ERC20 Contract: The main contract implementing the ERC20 standard. It provides the functionality to transfer tokens, approve spending, and other typical ERC20 actions.

Key Features

• Flexible Token Creation: Doesn't enforce a specific mechanism for token creation, allowing for a variety of supply mechanisms.
• Standard Compliant: Adheres to the ERC20 standard, ensuring compatibility with a wide range of services and wallets.
• Safe Approve Mechanism: Addresses potential issues in token allowances with functions like increaseAllowance and decreaseAllowance.
• Event Emission: Emits events on critical actions, facilitating tracking and transparency.

Constructor Parameters

The ERC20 contract constructor requires two parameters:

• name_: The name of the token.
• symbol_: The symbol of the token, usually a shorter version of the name.

Usage

1. Deployment: Deploy the contract on the Ethereum blockchain, providing the token's name and symbol.

2. Token Management: Use the functions provided to transfer tokens, approve allowances, and check balances.

3. Events: Listen to the Transfer and Approval events for tracking token movements and changes in allowances.

Functions Overview

• name(): Returns the token's name.
• symbol(): Returns the token's symbol.
• decimals(): Returns the number of decimals the token uses.
• totalSupply(): Returns the total token supply.
• balanceOf(account): Returns the token balance of an account.
• transfer(to, amount): Transfers tokens to a specified address.
• allowance(owner, spender): Returns the remaining number of tokens that the spender can spend.
• approve(spender, amount): Sets the amount of allowance the spender is allowed.
• transferFrom(from, to, amount): Transfers tokens from one address to another using the allowance mechanism.
• increaseAllowance(spender, addedValue): Increases the allowance for a spender.
• decreaseAllowance(spender, subtractedValue): Decreases the allowance for a spender.