Description:
ERC20 token contract with Burnable, Factory capabilities. Standard implementation for fungible tokens on Ethereum.
Blockchain: Ethereum
Source Code: View Code On The Blockchain
Solidity Source Code:
{{
"language": "Solidity",
"sources": {
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 amount) external returns (bool);
}
"
},
"contracts/ECOLock.sol": {
"content": "// SPDX-License-Identifier: MIT
// Compatible with OpenZeppelin Contracts ^5.0.0
pragma solidity ^0.8.20;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IERC20Burnable is IERC20 {
function burn(uint256 amount) external;
}
contract ECOLock {
/// @notice ECO token
IERC20Burnable public ecoToken;
/// @notice Emitted when ECO is claimed
event EcoClaimed(address account, uint totalAmount);
/// @notice Emitted when ECO is burned
event EcoBurned(uint256 amount);
// @notice ECO list of every account
mapping (address => uint256) public ecolist;
// @notice contract admin
address public owner;
constructor(address _ecoToken) public {
owner = msg.sender;
ecoToken = IERC20Burnable(_ecoToken);
}
modifier onlyOwner() {
require(msg.sender == owner, "Only owner can call this function.");
_;
}
function setEcoAmountAdd(address[] memory _to, uint256[] memory _amount) onlyOwner public returns (bool) {
require(_to.length == _amount.length, "The length of the two arrays must be the same");
for (uint256 i = 0; i < _to.length; i++) {
ecolist[_to[i]] += _amount[i];
}
return true;
}
function setEcoAmountSub(address[] memory _to, uint256[] memory _amount) onlyOwner public returns (bool) {
require(_to.length == _amount.length, "The length of the two arrays must be the same");
for (uint256 i = 0; i < _to.length; i++) {
ecolist[_to[i]] -= _amount[i];
}
return true;
}
function ecoClaim() public returns (bool) {
require(ecolist[msg.sender] > 0, "No locked ECO.");
uint256 totalAmount = ecolist[msg.sender];
ecolist[msg.sender] = 0;
ecoToken.transfer(msg.sender, totalAmount);
emit EcoClaimed(msg.sender, totalAmount);
return true;
}
function burnEco(uint256 amount) external onlyOwner {
require(amount > 0, "Amount must be greater than zero");
ecoToken.burn(amount);
emit EcoBurned(amount);
}
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0), "New owner is the zero address");
owner = newOwner;
}
}
"
}
},
"settings": {
"optimizer": {
"enabled": true,
"runs": 300
},
"evmVersion": "istanbul",
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
Submitted on: 2025-10-07 18:51:22
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