How to Deploy

Remix or Hardhat

1. Using Remix

Step 1: Set Up Metamask for Base Sepolia

• Open Metamask and add a new network.

• Network details:

  • Network Name: Base Sepolia

  • RPC URL: https://sepolia.base.org

  • Chain ID: 11155111

  • Symbol: ETH

  • Block Explorer: https://sepolia.etherscan.io

Step 2: Get Sepolia ETH

• Go to Base Sepolia Faucet.

• Connect your wallet and request test ETH to cover gas fees.

Step 3: Deploying with Remix

1. Open Remix IDE.

2. Create a new file and write or paste your Solidity contract. Example:

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

contract SimpleStorage {
    uint256 public storedData;

    function set(uint256 x) public {
        storedData = x;
    }

    function get() public view returns (uint256) {
        return storedData;
    }
}

1. Compile the contract using the Solidity compiler.

   • Ensure the Solidity version matches the one in the code.

2. Switch to the Deploy & Run Transactions tab.

   • Select Injected Web3 as the environment, connecting it to Metamask.

3. Click Deploy and confirm the transaction in Metamask.

Step 4: Verify Deployment

• Check the status on Base Sepolia Explorer using your wallet address or transaction hash.

---

2. Using Hardhat

Step 1: Install Node.js and Hardhat

1. Install Node.js from here.
2. Open your terminal and run the following command to install Hardhat:

bashCopy codenpm install --save-dev hardhat

Step 2: Create a Hardhat Project

1. Initialize your Hardhat project:

bashCopy codenpx hardhat

1. Choose "Create an empty hardhat.config.js" for simplicity.

Step 3: Write the Contract

Create a file SimpleStorage.sol in the contracts folder with this code:

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

contract SimpleStorage {
    uint256 public storedData;

    function set(uint256 x) public {
        storedData = x;
    }

    function get() public view returns (uint256) {
        return storedData;
    }
}

Step 4: Configure Hardhat for Base Sepolia

In your hardhat.config.js file, add the Base Sepolia network:

javascriptCopy coderequire('@nomiclabs/hardhat-ethers');
require('dotenv').config();

module.exports = {
  solidity: "0.8.0",
  networks: {
    sepolia: {
      url: 'https://sepolia.base.org',
      accounts: [`0x${process.env.PRIVATE_KEY}`]
    }
  }
};

Make sure to add your wallet private key in a .env file:

bashCopy codePRIVATE_KEY=your_wallet_private_key_here

Step 5: Deploy the Contract

Create a deploy.js file inside the scripts folder:

javascriptCopy codeasync function main() {
  const SimpleStorage = await ethers.getContractFactory('SimpleStorage');
  const simpleStorage = await SimpleStorage.deploy();
  
  console.log('Contract deployed to:', simpleStorage.address);
}

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

Step 6: Deploy via Hardhat

Run the following command to deploy your contract to Base Sepolia:

bashCopy codenpx hardhat run scripts/deploy.js --network sepolia

Step 7: Verify Deployment

Check your contract on the Base Sepolia Explorer.