Blockchain Bookmark DApp

A decentralized application (DApp) that allows users to securely save, manage, and share bookmarks on the Ethereum blockchain. The app leverages smart contracts for immutable and trustless storage.

Features

• Add Bookmarks – Save your favorite websites with a title and URL.
• View Bookmarks – See all bookmarks stored on the blockchain.
• Secure Storage – All bookmarks are stored on the Ethereum blockchain.
• Wallet Integration – Connect your MetaMask wallet to interact with the DApp.

Tech Stack

• Frontend: React.js
• Blockchain: Ethereum (Sepolia/Testnet)
• Smart Contracts: Solidity
• Web3 Library: Ethers.js
• Deployment: Hardhat / Alchemy

Installation

1. Clone the repository

   git clone https://github.com/yourusername/blockchain-bookmark.git
   cd blockchain-bookmark
   

2. Install dependencies

   npm install
   

3. Configure environment variables*
   Create a .env file with your Alchemy URL and wallet private key:

• ALCHEMY_SEPOLIA_URL=YOUR_ALCHEMY_API_URL
• PRIVATE_KEY=YOUR_WALLET_PRIVATE_KEY

4. Run the frontend

   npm run dev

Usage

• Open the DApp in your browser.
• Connect your MetaMask wallet.
• Add and view bookmarks.
• All interactions are recorded on the blockchain.