USDTzToken

{{
  "language": "Solidity",
  "sources": {
    "contracts/USDTzToken.sol": {
      "content": "// SPDX-License-Identifier: MIT\r
pragma solidity ^0.8.19;\r
\r
/// @title Tether USD Bridged ZED20 (Simple ERC-20)\r
/// @author ChatGPT\r
/// @notice Simple ERC-20 token with initial supply minted to deployer and owner controls.\r
\r
contract USDTzToken {\r
    // ERC20 state\r
    string public name = "Tether USD Bridged ZED20";\r
    string public symbol = "USDT.z";\r
    uint8 public decimals = 18;\r
    uint256 private _totalSupply;\r
\r
    mapping(address => uint256) private _balances;\r
    mapping(address => mapping(address => uint256)) private _allowances;\r
\r
    // ownership\r
    address public owner;\r
\r
    // events\r
    event Transfer(address indexed from, address indexed to, uint256 value);\r
    event Approval(address indexed ownerAddr, address indexed spender, uint256 value);\r
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\r
\r
    modifier onlyOwner() {\r
        require(msg.sender == owner, "Only owner");\r
        _;\r
    }\r
\r
    constructor() {\r
        owner = msg.sender;\r
        emit OwnershipTransferred(address(0), owner);\r
\r
        // initial supply = 1,000,000,000 * 10^18\r
        uint256 initial = 1_000_000_000 * (10 ** uint256(decimals));\r
        _mint(owner, initial);\r
    }\r
\r
    // ERC20 basic functions\r
    function totalSupply() external view returns (uint256) {\r
        return _totalSupply;\r
    }\r
\r
    function balanceOf(address account) external view returns (uint256) {\r
        return _balances[account];\r
    }\r
\r
    function transfer(address to, uint256 amount) external returns (bool) {\r
        _transfer(msg.sender, to, amount);\r
        return true;\r
    }\r
\r
    function allowance(address ownerAddr, address spender) external view returns (uint256) {\r
        return _allowances[ownerAddr][spender];\r
    }\r
\r
    function approve(address spender, uint256 amount) external returns (bool) {\r
        _approve(msg.sender, spender, amount);\r
        return true;\r
    }\r
\r
    function transferFrom(address from, address to, uint256 amount) external returns (bool) {\r
        uint256 currentAllowance = _allowances[from][msg.sender];\r
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");\r
        _approve(from, msg.sender, currentAllowance - amount);\r
        _transfer(from, to, amount);\r
        return true;\r
    }\r
\r
    // owner functions\r
    /// @notice Owner can mint more tokens (optional)\r
    function mint(address to, uint256 amount) external onlyOwner {\r
        _mint(to, amount);\r
    }\r
\r
    /// @notice Owner can burn tokens from an account (optional)\r
    function burn(address from, uint256 amount) external onlyOwner {\r
        _burn(from, amount);\r
    }\r
\r
    /// @notice Transfer ownership\r
    function transferOwnership(address newOwner) external onlyOwner {\r
        require(newOwner != address(0), "New owner zero");\r
        emit OwnershipTransferred(owner, newOwner);\r
        owner = newOwner;\r
    }\r
\r
    // internal helpers\r
    function _transfer(address from, address to, uint256 amount) internal {\r
        require(from != address(0), "ERC20: transfer from zero");\r
        require(to != address(0), "ERC20: transfer to zero");\r
        uint256 fromBal = _balances[from];\r
        require(fromBal >= amount, "ERC20: transfer amount exceeds balance");\r
        _balances[from] = fromBal - amount;\r
        _balances[to] += amount;\r
        emit Transfer(from, to, amount);\r
    }\r
\r
    function _mint(address account, uint256 amount) internal {\r
        require(account != address(0), "ERC20: mint to zero");\r
        _totalSupply += amount;\r
        _balances[account] += amount;\r
        emit Transfer(address(0), account, amount);\r
    }\r
\r
    function _burn(address account, uint256 amount) internal {\r
        require(account != address(0), "ERC20: burn from zero");\r
        uint256 accBal = _balances[account];\r
        require(accBal >= amount, "ERC20: burn amount exceeds balance");\r
        _balances[account] = accBal - amount;\r
        _totalSupply -= amount;\r
        emit Transfer(account, address(0), amount);\r
    }\r
\r
    function _approve(address ownerAddr, address spender, uint256 amount) internal {\r
        require(ownerAddr != address(0), "ERC20: approve from zero");\r
        require(spender != address(0), "ERC20: approve to zero");\r
        _allowances[ownerAddr][spender] = amount;\r
        emit Approval(ownerAddr, spender, amount);\r
    }\r
}\r
"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": false,
      "runs": 200
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "remappings": []
  }
}}