hardhat.config.js

require("@nomiclabs/hardhat-waffle");
require('dotenv').config();
require("solidity-coverage");
require("@nomiclabs/hardhat-etherscan");

// This is a sample Hardhat task. To learn how to create your own go to
// https://hardhat.org/guides/create-task.html
task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
  const accounts = await hre.ethers.getSigners();

  for (const account of accounts) {
    console.log(account.address);
  }
});

// You need to export an object to set up your config
// Go to https://hardhat.org/config/ to learn more

/**
 * @type import('hardhat/config').HardhatUserConfig
 */
module.exports = {
  solidity: "0.8.2",
  networks: {
    rinkeby: {
      url: process.env.ALCHEMY_RINKEBY_URL, //Infura url with projectId
      accounts: [process.env.PRIVATE_KEY] // add the account that will deploy the contract (private key)
    },
    bscTestnet: {
      url: "https://data-seed-prebsc-1-s1.binance.org:8545",
      chainId: 97,
      gasPrice: 20000000000,
      accounts: { mnemonic: process.env.MNEMONIC }
    },
  },
  etherscan: {
    // Your API key for Etherscan
    // Obtain one at https://etherscan.io/
    apiKey: process.env.ETHERSCAN_API_KEY
  }
};