hardhat-arbitrum

Hardhat plugin for Arbitrum Developers.

Features

ArbitrumScan Contract Verification

Prerequisites

Before the installation steps you need to have your hardhat project initialized using the command

npx hardhat init

Make sure to have dependencies installed!

Installation

Use the following command to install

npm i hardhat-arbitrum --save-dev

Import the plugin in your hardhat.config.js:

require("hardhat-arbitrum");

Or if you are using TypeScript, in your hardhat.config.ts:

import "hardhat-arbitrum";

Remove / Comment the import for @nomicfoundation/hardhat-toolbox

Add the following configuration to the config object in hardhat.config.js.

networks: {
        arbitrumGoerli: {
            // can be replaced with the RPC url of your choice.
            url: "https://goerli-rollup.arbitrum.io/rpc",
            accounts: [
                "<YOUR_PRIVATE_KEY>"
            ],
        },
        arbitrumOne: {
            url: "https://arb1.arbitrum.io/rpc",
            accounts: [
                "<YOUR_PRIVATE_KEY>"
            ],
        }
    },
    etherscan: {
        apiKey: {
            arbitrumGoerli: "<OPTIMISMSCAN_API_KEY>",
            arbitrumOne: "<OPTIMISMSCAN_API_KEY>"
        },
    },

Verify your contracts using the following command (Make sure your contracts are compiled before verification)

Arbitrum Goerli Testnet

npx hardhat verify <CONTRACT_ADDRESS> <CONSTRUCTOR_ARGS> --network arbitrumGoerli

Arbitrum Mainnet

npx hardhat verify <CONTRACT_ADDRESS> <CONSTRUCTOR_ARGS> --network arbitrumOne