Using Hardhat

What is Hardhat

Hardhat is a development environment designed to allow the user to compile, deploy, test, and debug smart contracts.

Setting up the development environment

There are a few technical requirements before we start. Please install the following: Requirements:


There are a few technical requirements before we start. Please install the following: Requirements:

Firstly, you will need to create an empty project npm init --yes
When your project is ready, can then run

					npm install --save-dev hardhat


It’s recommeded to install some dependencies.

					npm install --save-dev @nomiclabs/hardhat-waffle ethereum-waffle chai @nomiclabs/hardhat-ethers ethers

Your local installation of Hardhat will require you to use npx to run it (i.e. npx hardhat).

Create A Project

Now to create your Hardhat project, run npx hardhat in your project folder:

					mkdir MegaCoin
cd MegaCoin

  • Intialize your project:
					$ npx hardhat
888    888                      888 888               888
888    888                      888 888               888
888    888                      888 888               888
8888888888  8888b.  888d888 .d88888 88888b.   8888b.  888888
888    888     "88b 888P"  d88" 888 888 "88b     "88b 888
888    888 .d888888 888    888  888 888  888 .d888888 888
888    888 888  888 888    Y88b 888 888  888 888  888 Y88b.
888    888 "Y888888 888     "Y88888 888  888 "Y888888  "Y888

Welcome to Hardhat v2.0.8

? What do you want to do? …
❯ Create a sample project
  Create an empty hardhat.config.js

Now that the project is initialized, you will now have a project structure with the following items:

    • contracts/: Directory for Solidity contracts
    • scripts/: Directory for scriptable deployment files
    • test/: Directory for test files for testing your application and contracts
    • hardhat-config.js: Hardhat configuration file

Create Contract

You can write your own smart contract or download the PRC20 token smart contract template.

Config Hardhat for TC

  • Go to hardhat.config.js
  • Update the config with nc-network-crendentials.
const { mnemonic } = require('./secrets.json');

// This is a sample Hardhat task. To learn how to create your own go to
task("accounts", "Prints the list of accounts", async () => {
  const accounts = await ethers.getSigners();

  for (const account of accounts) {

// You need to export an object to set up your config
// Go to to learn more

 * @type import('hardhat/config').HardhatUserConfig
module.exports = {
  defaultNetwork: "mainnet",
  networks: {
    localhost: {
      url: ""
    hardhat: {
    testnet: {
      url: "",
      chainId: 97,
      gasPrice: 20000000000,
      accounts: {mnemonic: mnemonic}
    mainnet: {
      url: "",
      chainId: 56,
      gasPrice: 20000000000,
      accounts: {mnemonic: mnemonic}
  solidity: {
  version: "0.5.16",
  settings: {
    optimizer: {
      enabled: true
  paths: {
    sources: "./contracts",
    tests: "./test",
    cache: "./cache",
    artifacts: "./artifacts"
  mocha: {
    timeout: 20000



It requires the wallet mnemonic to be passed in for Provider, this is the seed phrase for the account you’d like to deploy from, or example Metamask account. You need to create a new .secret file in root directory and enter your 12 word mnemonic seed phrase to get started. To get the seedwords from metamask wallet you can go to Metamask Settings, then from the menu choose Security and Privacy where you will see a button that says reveal seed words.

Compile Contract

To be able to compile a Hardhat project, change to the root of the directory where the project is located and then type the following into a terminal:

					npx hardhat compile


Deploying on PULSE Network

Run this command in root of the project directory:

					$  npx hardhat run --network testnet scripts/deploy.js


Remember your address, transaction_hash and other details provided would differ, The above has only been provided to give an idea of structure.

Congratulations! You have now successfully deployed PRC20 Smart Contract. You can interact with the Smart Contract and functions through the explorer. 

You can check the deployment status here: 

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