一、安装环境
1、在chrome浏览器安装MetaMask插件
2、安装插件
安装方法,下载后解压,在浏览器输入chrome://extensions/,将安装文件拖拽进浏览器,即可安装
3、新建钱包
输入密码,保存助记词
4、转入一个ETH(现在测试网络不能发行代币了)
二、发布合约
由于以太坊智能合约使用的是Solidity语言,所以需要使用Solidity开发。
进入到这个网站进行合约发布
在此是需要已经安装Chrome插件的
1、合约模版
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pragma solidity ^0.4.16;
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interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }
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contract TokenERC20 {
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string public name;
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string public symbol;
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uint8 public decimals = 18; // 18 是建议的默认值
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uint256 public totalSupply;
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mapping (address => uint256) public balanceOf; //
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mapping (address => mapping (address => uint256)) public allowance;
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(address indexed owner, address indexed spender, uint256 value);
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event Burn(address indexed from, uint256 value);
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function TokenERC20(uint256 initialSupply, string tokenName, string tokenSymbol) public {
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totalSupply = initialSupply * 10 ** uint256(decimals);
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balanceOf[msg.sender] = totalSupply;
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name = tokenName;
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symbol = tokenSymbol;
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}
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function _transfer(address _from, address _to, uint _value) internal {
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require(_to != 0x0);
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require(balanceOf[_from] >= _value);
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require(balanceOf[_to] + _value > balanceOf[_to]);
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uint previousBalances = balanceOf[_from] + balanceOf[_to];
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balanceOf[_from] -= _value;
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balanceOf[_to] += _value;
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Transfer(_from, _to, _value);
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assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
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}
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function transfer(address _to, uint256 _value) public returns (bool) {
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_transfer(msg.sender, _to, _value);
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return true;
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}
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function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
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require(_value <= allowance[_from][msg.sender]); // Check allowance
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allowance[_from][msg.sender] -= _value;
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_transfer(_from, _to, _value);
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return true;
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}
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function approve(address _spender, uint256 _value) public
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returns (bool success) {
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allowance[msg.sender][_spender] = _value;
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Approval(msg.sender, _spender, _value);
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return true;
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}
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function approveAndCall(address _spender, uint256 _value, bytes _extraData) public returns (bool success) {
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tokenRecipient spender = tokenRecipient(_spender);
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if (approve(_spender, _value)) {
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spender.receiveApproval(msg.sender, _value, this, _extraData);
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return true;
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}
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}
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function burn(uint256 _value) public returns (bool success) {
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require(balanceOf[msg.sender] >= _value);
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balanceOf[msg.sender] -= _value;
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totalSupply -= _value;
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Burn(msg.sender, _value);
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return true;
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}
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function burnFrom(address _from, uint256 _value) public returns (bool success) {
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require(balanceOf[_from] >= _value);
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require(_value <= allowance[_from][msg.sender]);
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balanceOf[_from] -= _value;
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allowance[_from][msg.sender] -= _value;
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totalSupply -= _value;
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Burn(_from, _value);
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return true;
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}
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}
2、进入编辑网站
代码不需要修改
点击“Create”按钮
3、提交智能合约
点击“Create”后,就可以看到MetaMask弹出的“CONFIRM TRANSACTION”的页面,这个页面是用来确认发送的,点击“CONFIRM”确认提交。
点击刚刚发布的智能合约地址,就会调转到Etherscan(以太坊的区块浏览器),耐性等待智能合约的创建。
点击确认,支付成功后,然后他会自动部署合约,等一会,去区块浏览器查你的ETH主账号的事物:地址为:https://etherscan.io/address/(加上你自己的支付矿工费用的ETH账号地址);点击进入
下图则为你的代币地址,然后查看代币的具体信息:地址为:
https://etherscan.io/token/(你自己的代币地址)
三、验证
打开MetaMask插件
在token address中输入token地址
显示的正是刚刚创建的Token,也就是ZZZ,余额为1,这说明ERC20 Token发布成功了!
如果实在不会,我在这里推荐CoinTool 一键创建 https://cointool.catxs.com/eth/createToken