UserProfile DApp

A simple decentralized application (DApp) that allows users to manage their profiles on the Ethereum blockchain. Users can set, update, and view profiles containing their name, age, and email.

Smart Contract Overview

The UserProfile smart contract provides functionalities to:

• Set or update a user profile.
• Retrieve a user's profile.
• Delete a user's profile (admin only).

Prerequisites

Before you begin, ensure you have met the following requirements:

• Node.js and npm installed.
• MetaMask browser extension installed and configured.
• An Ethereum wallet with testnet ETH for gas fees.
• Access to an Ethereum testnet (like Rinkeby or Goerli).

Installation

1. Clone the repository:

   git clone https://github.com/your-username/UserProfile-DApp.git
   cd UserProfile-DApp

2. Install dependencies:

   npm install

Deploying the Smart Contract

1. Compile and Deploy the Smart Contract using Remix:

   • Go to Remix IDE.
   • Create a new file named UserProfile.sol and copy the smart contract code into it.
   • Compile the contract.
   • Deploy it on a testnet using MetaMask.

2. Update the Contract Address and ABI in your React app:

   • Replace contractAddress in HomePage.js with the deployed contract address.
   • Make sure the ABI matches the compiled contract ABI.

Running the DApp

1. Start the development server:

   npm start

2. Open the app in your browser:
   • The app will run on http://localhost:3000.

Usage

• Connect Wallet: Use the "Connect MetaMask Wallet" button to connect your MetaMask wallet.
• Set Profile: Enter your name, age, and email, then click "Register" to save your profile on the blockchain.
• View Profile: Enter an Ethereum address to view the associated profile details.

Project Structure

• Smart Contracts: Located in the contracts folder, specifically UserProfile.sol.
• Frontend: React code for interacting with the smart contract is in HomePage.js.

Technologies Used

• Solidity: Smart contract language for the Ethereum blockchain.
• JavaScript (React): Frontend framework for building the user interface.
• Ethers.js: Library for interacting with Ethereum.
• MetaMask: Ethereum wallet for connecting to the blockchain.

Author

Favour Sabo

License

This project is licensed under the MIT License. See the LICENSE file for more details.