ERC20 - skka3134

ERC20

Jul 13, 2023#Web3 #Blockchain #NFT #DeFi #DAO #DApp #区块链 #區塊鏈 #加密货币 #DeGame #链游 #Crypto #比特币 #以太坊 #Ethereum #合约开发99

AI-generated summary

This is a set of instructions for starting a new project and deploying a contract on the Ethereum blockchain using Hardhat. It includes steps for initializing Hardhat, installing dependencies, modifying the Hardhat configuration file, creating an .env file to store environment variables, developing and compiling a contract, deploying the contract on a local network or the "sepolia" network, and interacting with the contract using Remix.

开始一个新的工程

npm init

2. 安装 hardhat

npm install hardhat

3. 初始化 hardhat

npx hardhat/npx hardhat init

4. 安装依赖

npm install @openzeppelin/contracts
npm install @openzeppelin/contracts-upgradeable
npm install @chainlink/contracts
npm install dotenv


npm install @openzeppelin/hardhat-upgrades 
npm install @nomiclabs/hardhat-ethers
npm install @openzeppelin/hardhat-defender
npm install @nomiclabs/hardhat-etherscan 
npm install chai 
npm install @openzeppelin/test-helpers

5. 修改 hardhat.config.js

require("@nomicfoundation/hardhat-toolbox");
require('dotenv').config()
// require('@nomiclabs/hardhat-ethers');
// require('@openzeppelin/hardhat-upgrades');
// require("@openzeppelin/hardhat-defender");
// require("@nomiclabs/hardhat-etherscan");
module.exports = {
  solidity: {
    version: '0.8.19',
    settings: {
      optimizer: {
        enabled: true,
        runs: 200,
      },
    },
  },
  networks: {
    sepolia: {
      url: `https://eth-sepolia.g.alchemy.com/v2/${process.env.ALCHEMY_API_KEY}`,
      accounts: [process.env.MNEMONIC]
    },
  },
  // etherscan: {
  //   apiKey: process.env.etherscanKey,
  // },
  // defender: {
  //   apiKey: process.env.DEFENDER_TEAM_API_KEY,
  //   apiSecret: process.env.DEFENDER_TEAM_API_SECRET_KEY,
  // },
};

6. 创建一个.env 文件存储

MNEMONIC=""
SEPOLIA_PRIVATE_KEY=""
SEPOLIA_PRIVATE_KEY=""
SEPOLIA_PRIVATE_KEY=""
ALCHEMY_API_KEY=""

7. 使用 Wizard 开发合约 https://docs.openzeppelin.com/contracts/4.x/wizard

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

/// @custom:security-contact [email protected]
contract DragonToken is ERC20, ERC20Burnable, Ownable {
    constructor() ERC20("DragonToken", "DTK") {
        _mint(msg.sender, 10000 * 10 ** decimals());
    }

    function mint(address to, uint256 amount) public onlyOwner {
        _mint(to, amount);
    }
}

8. 编译

npx hardhat compile

9. 部署脚本

async function main() {
  const [deployer] = await ethers.getSigners();
  console.log("Deploying contracts with the account:", deployer.address);
  const DragonToken = await ethers.deployContract("DragonToken");
  console.log("Token address:", await DragonToken.getAddress());
}

main()
  .then(() => process.exit(0))
  .catch((error) => {
    console.error(error);
    process.exit(1);
  });

10. 启动 hardhat 本地网络

npx hardhat node

11. 部署在 hardhat 本地网络上

npx hardhat run ./scripts/deploy.js
npx hardhat run ./scripts/deploy.js --network localhost

12. 部署 sepolia 网络

npx hardhat run ./scripts/deploy.js --network sepolia

0xb02a44bB533DA6BeF058c66Dc5d0d7F2ca38C50a
13. 在 remix 中交互 https://remix.ethereum.org/