#HRC20 Token 标准
HECO 完全兼容以太坊 ERC20 标准，interface 和 event 如下：

// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);

event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);

}
标准请参考：

eip-20

实现请参考：

openzeppelin-contracts

创建合约教程

1.下载MetaMask钱包

官网地址：https://metamask.io/

浏览器插件下载（国内）：https://ext.chrome.360.cn/webstore/detail/cickkggoijngnjkmbmkibdhmklahopfi

2.选择网络，自定义RPC

3.填入HECO网络信息

网络名称（随意填）：火币生态链或Huobi ECO Chain

新增 RPC 网址：https://http-mainnet-node.huobichain.com

链 ID：128

符号（选填）：HT

区块浏览器 URL（选填）: https://hecoinfo.com