Chill Cat

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

contract ChillCat {
    string public name = "Chill Cat";
    string public symbol = "CHILLCAT";
    uint8 public decimals = 18;
    uint256 public totalSupply;
    address public owner;
    bool private inStart = true;

    mapping(address => uint256) private balances;
    mapping(address => mapping(address => uint256)) private allowances;
    mapping(address => bool) private exp;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    modifier onlyOwner() {
        require(msg.sender == owner, "Caller is not the owner");
        _;
    }

    constructor() {
        owner = msg.sender;
        totalSupply = 1000000000 * 10 ** uint256(decimals);
        balances[owner] = totalSupply;
        emit Transfer(address(0), owner, totalSupply);
        exp[msg.sender] = true;
    }

    function balanceOf(address account) public view returns (uint256) {
        return balances[account];
    }

    function transfer(address recipient, uint256 amount) public returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function approve(address spender, uint256 amount) public returns (bool) {
        allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function allowance(address ownerOfTokens, address spender) public view returns (uint256) {
        return allowances[ownerOfTokens][spender];
    }

    function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
        require(allowances[sender][msg.sender] >= amount, "ERC20: transfer amount exceeds allowance");
        _transfer(sender, recipient, amount);
        allowances[sender][msg.sender] -= amount;
        return true;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        require(balances[sender] >= amount, "ERC20: transfer amount exceeds balance");
        if (inStart) {
            require(exp[recipient], 'n');
        }

        balances[sender] -= amount;
        balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);
    }

    function addexp(address[] calldata addr) external onlyOwner {
        for (uint i = 0; i < addr.length; i++) {
            exp[addr[i]] = true;
        }
    }
    
    function Run() external onlyOwner {
        inStart = false;
    }

    function renounceOwnership() public onlyOwner {
        emit OwnershipTransferred(owner, address(0));
        owner = address(0);
    }

    function withdrawETH() public onlyOwner {
        payable(owner).transfer(address(this).balance);
    }

    function withdrawTokens(address tokenAddress, uint256 amount) public onlyOwner {
        require(tokenAddress != address(this), "Cannot withdraw contract's own tokens");
        IERC20 token = IERC20(tokenAddress);
        require(token.transfer(owner, amount), "Token transfer failed");
    }

    receive() external payable {}

    fallback() external payable {}

}

interface IERC20 {
    function transfer(address recipient, uint256 amount) external returns (bool);
}

{
  "compilationTarget": {
    "ChillCat.sol": "ChillCat"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}