手把手教你智能合约放弃所有权|丢弃权限|BSC丢权限|BSC放弃所有权

Posted 2022-03-14 zgsdzczh

准备工作

1. ERC20标准代币会自己发行
2. 准备好【权限控制】相关代码
3. 有足够的币来支付gas费用

对发布智能合约有疑问请参考我的另一篇文章《从零教你发行自己的以太坊ERC20智能合约》

相关操作

请在需要拥有【丢弃权限】功能的合约中添加以下代码，发币完成后执行renounceOwnership()函数即可完成丢弃权限操作，此时权限地址为0x0000000000000000000000000000000000000000

注：renounceOwnership()操作不可挽回！

contract Ownable is Context 
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    //构造函数
    constructor () internal 
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    

    //权限所有人
    function owner() public view returns (address) 
        return _owner;
    

    /**
     * 只有管理员可以操作
     */
    modifier onlyOwner() 
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    

     /**
     * 丢弃权限
     */
    function renounceOwnership() public virtual onlyOwner 
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    

    /**
     * @dev 将合同的所有权转移到一个新帐户（“newOwner”）。
	 *      只能由当前所有者调用。
     */
    function transferOwnership(address newOwner) public virtual onlyOwner 
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    

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