hardhat.config.js

require("@nomiclabs/hardhat-waffle");
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: "0.8.4",
    networks: {
        rinkeby: {
            url: "https://eth-rinkeby.alchemyapi.io/v2/" + process.env.ALCHEMY_KEY,
            accounts: [process.env.PRIVATE_KEY],
        },
    },
    etherscan: {
        apiKey: "I9RJRMQDCVRPPYF9AWP47V2WXUDBDS2SDD",
    },
};