hardhat.config.js

require('dotenv').config()
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 () => {
  const accounts = await 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: {
    compilers: [
      {
        version: '0.7.5',
      },
      { version: '0.5.0' },
    ],
  },
  networks: {
    rinkeby: {
      url: 'https://rinkeby.infura.io/v3/9b82b72329ac4374b79d232a088001d0',
      accounts: [process.env.PK],
    },
  },
  etherscan: {
    // Your API key for Etherscan
    // Obtain one at https://etherscan.io/
    apiKey: process.env.ETHERSCAN,
  },
}