OpChan/hardhat.config.js

import "@nomicfoundation/hardhat-toolbox";
import dotenv from "dotenv";
dotenv.config();

const config = {
  solidity: "0.8.20",
  networks: {
    sepolia: {
      url: "https://eth-sepolia.api.onfinality.io/public",
      chainId: 11155111,
      accounts: [`${process.env.PRIVATE_KEY}`]
    }
  },
  etherscan: {
    apiKey: process.env.ETHERSCAN_API_KEY
  },
  paths: {
    sources: "./contracts",
    tests: "./test",
    cache: "./cache",
    artifacts: "./artifacts"
  },
};

export default config;