전체 문서 색인은 llms.txt

Deploy Your First Contract

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In this module, you will write, compile, deploy, and interact with your first smart contract on the Rootstock Testnet.

Starter Kits

Get started with ready-made templates and starter guides for easy development and deployment on Rootstock. View our quick starts.

Step 1 - Write the Contract

Create: contracts/HelloRootstock.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

contract HelloRootstock {
    string public message;

    constructor(string memory _message) {
        message = _message;
    }

    function updateMessage(string memory _newMessage) public {
        message = _newMessage;
    }
}

Try this contract in Remix

Want to deploy and interact with HelloRootstock without any local setup? Use the button below to open it directly in the Remix IDE. You'll need MetaMask with Rootstock Testnet configured — see the full Remix + Rootstock guide for the exact steps.

Step 2 — Configure Hardhat

Edit: hardhat.config.js

require("@nomicfoundation/hardhat-toolbox");

module.exports = {
  solidity: "0.8.30",
  networks: {
    rootstock_testnet: {
      url: "https://public-node.testnet.rsk.co",
      chainId: 31,
      accounts: [process.env.PRIVATE_KEY]
    }
  }
};

Add your private key to .env:

PRIVATE_KEY=your_private_key_here

Step 3 — Create Deployment Script

Create: scripts/deploy.js

async function main() {
  const Contract = await ethers.getContractFactory("HelloRootstock");
  const contract = await Contract.deploy("Hello from Rootstock!");

  await contract.waitForDeployment();
  console.log("Contract deployed at:", await contract.getAddress());
}

main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
});

Step 4 — Compile and Deploy

Compile:

npx hardhat compile

Deploy:

npx hardhat run scripts/deploy.js --network rootstock_testnet

Expected output:

Compiled successfully
Contract deployed at: 0x1234...abcd

Check contract on the Rootstock Testnet Explorer.

Step 5 — Interact With the Contract

Use Hardhat console:

npx hardhat console --network rootstock_testnet

In console:

const c = await ethers.getContractAt(
  "HelloRootstock",
  "0xYourContractAddress"
);

await c.message(); // read
await c.updateMessage("Updated!"); // write

Summary

You now know how to:

• Write a smart contract
• Configure Hardhat for Rootstock
• Deploy to Testnet
• Interact via terminal

Next: Build Your First dApp