Developer QuickStart

Welcome to the HashKey Chain quickstart guide! With HashKey Chain, you can use familiar Ethereum development tools since it maintains EVM compatibility. Your existing smart contract development and testing tools will work seamlessly - you'll just need to point them to a HashKey Chain RPC Provider.

What You'll Achieve

Set Up Development Environment

Hardhat

Modify your Hardhat config file hardhat.config.ts:

const config: HardhatUserConfig = {
  networks: {
    hashkeyTestnet: {
      url: "https://hashkeychain-testnet.alt.technology" || "",
      accounts:
        process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
      chainId: 133
    },
  },
};

Foundry

To deploy using the HashKey Chain Testnet, run:

forge create ... --rpc-url=https://hashkeychain-testnet.alt.technology --chain-id 133

Remix Web IDE

1. Set up MetaMask with HashKey Chain Testnet using these parameters:

   • Network Name: HashKey Chain Testnet

   • RPC URL: https://hashkeychain-testnet.alt.technology

   • Chain ID: 133

   • Currency Symbol: HSK

2. In Remix's "Deploy and Run Transactions" tab, select "Injected Provider - MetaMask"

3. Connect your wallet and select the HashKey Chain Testnet

4. Deploy your contract

Truffle

Configure your truffle.js:

const HDWalletProvider = require("@truffle/hdwallet-provider")

module.exports = {
  networks: {
    hashkeyTestnet: {
      provider: () =>
        new HDWalletProvider(process.env.PRIVATE_KEY, "https://hashkeychain-testnet.alt.technology"),
      network_id: 133,
    },
  }
}

ethers.js

Set up a Hashkey Chain Testnet provider:

import { ethers } from "ethers"

const provider = new ethers.providers.JsonRpcProvider("https://hashkeychain-testnet.alt.technology")

Additional Resources

• Visit our documentation portal for detailed guides

• Check out the block explorer at https://explorer.hsk.xyz to verify transactions and contracts

• Use our bridge interface to move tokens between Ethereum Sepolia and Hashkey Chain Testnet