HelloWorld.sol

🏁 Prerequisites

1. MetaMask Wallet Setup

2. Tunnel ETH to Hemi

📚 Tutorial

Video

1. Go to Remix IDE

Remix IDE is a powerful, open-source web application for developing, compiling, and deploying Ethereum smart contracts with ease.

2. Add the Smart Contract

In Remix IDE, start by creating a new file named HelloWorld.sol.

• The following contract is a basic example designed for interaction. Copy the code below and paste it into the file HelloWorld.sol.

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract HelloWorld {
    string public greeting = "Hello, World!";

    function getGreeting() public view returns (string memory) {
        return greeting;
    }

    function setGreeting(string memory _greeting) public {
        greeting = _greeting;
    }
}

3. Compile the Contract

Select Compile HelloWorld.sol button to use the Remix IDE's Solidity compiler. Check for any compilation errors and fix them.

4. Connect Remix To MetaMask

Choose Injected Provider - MetaMask under "Environment".

5. Confirm the Connection

• A pop-up from MetaMask will appear to confirm the connection. Select Next.

• Select Connect

6. Link to Hemi Account

• Link to the relevant Hemi account in the "Account" drop-down.

7. Deploy

Execute the deployment of your smart contract to the Hemi network directly from Remix IDE.

• Select Deploy

• Your MetaMask will pop-up to confirm the deployment of your smart contract. Select Confirm

🥳 Wohoooo! If successful you should see a ✅ in the console.

⚠️ If it fails, double check that the Solidity version in the compiler is the correct version.