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以太坊钱包

基本钱包的示例​

  • 任何人都可以发送 ETH。
  • 只有所有者才能撤回。
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

contract EtherWallet {
    address payable public owner;

    constructor() {
        owner = payable(msg.sender);
    }

    receive() external payable {}

    function withdraw(uint _amount) external {
        require(msg.sender == owner, "caller is not owner");
        payable(msg.sender).transfer(_amount);
    }

    function getBalance() external view returns (uint) {
        return address(this).balance;
    }
}