Private Ethereum Blockchain with Hardhat

This project demonstrates how to create a private Ethereum blockchain using Hardhat, deploy a smart contract to it, and interact via Remix and MetaMask.

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🛠 Tools Used

• Hardhat – local Ethereum network
• Solidity – smart contract language
• Remix – web IDE for testing
• MetaMask – Ethereum wallet
• Node.js + npm

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🔧 Steps Performed

1. Installed Hardhat and initialized the project:

   npm install --save-dev hardhat @nomicfoundation/hardhat-toolbox
   npx hardhat

2. compiled simple smart contract HelloWorld.sol

3. Ran the local Hardhat blockchain:

   npx hardhat node

4. Deployed the contract locally:

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

5. Connected Remix to http://127.0.0.1:8545 via Web3 Provider and interacted with the contract.

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🧪 How to Test

• Clone this repo
• Install dependencies:
  npm install
• Compile contracts:
  npx hardhat compile
• Start local blockchain:
  npx hardhat node
• Deploy:
  npx hardhat run scripts/deploy.js --network localhost

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Author

Rohit Mishra