🚀 Crypto Wallet

A simple, modern crypto wallet built with React and Ethers.js. Manage your Ethereum accounts, send transactions, and switch between networks—all from a clean interface.

What It Does

• Create & manage multiple accounts from a single seed phrase
• Send ETH/POL to any address with transaction confirmation
• Switch networks (Ethereum Mainnet, Sepolia, Polygon Amoy)
• View balances and recent transaction history
• Recover your wallet anytime using your seed phrase

Quick Start

# Clone the repo
git clone https://github.com/yourusername/crypto-wallet.git
cd crypto-wallet

# Install dependencies
npm install

# Add your Alchemy API keys to .env
VITE_ETH_MAINNET_RPC_URL=https://eth-mainnet.g.alchemy.com/v2/YOUR_API_KEY
VITE_SEPOLIA_RPC=https://eth-sepolia.g.alchemy.com/v2/YOUR_API_KEY
VITE_POLYGON_AMOY_RPC=https://polygon-amoy.g.alchemy.com/v2/YOUR_API_KEY

# Run it
npm run dev

Get your free Alchemy API key at alchemy.com

How to Use

1. First time? The app generates a new wallet automatically. Save your 12-word seed phrase immediately—you won't see it again!

2. Switch networks using the dropdown. Your balance updates automatically.

3. Generate new address by clicking "Generate new adress". All accounts derive from your seed phrase.

4. Send crypto by entering a recipient address and amount. Click send and wait for confirmation.

5. Lost your wallet? Use "Recover Account" with your seed phrase to restore everything.

Project Structure

src/
├── components/        # UI components
│   ├── Account/      # Wallet management (create, recover, display)
│   └── Wallet/       # Transactions and network switching
├── context/          # Global wallet state
├── services/         # Blockchain logic (transactions, balance, chains)
└── utils/            # Helper functions

Tech Stack

• React 19 with hooks and context
• Ethers.js 6 for blockchain interactions
• Vite for fast development
• Alchemy for reliable RPC endpoints

Important Notes

⚠️ This is a demo wallet for learning purposes. Don't store significant funds here. It's not a production-ready wallet—think of it as a portfolio project that actually works.

• Your seed phrase is shown only once. Write it down!
• Private keys live in memory (React state) while the app runs
• Always test on Sepolia testnet before using real ETH
• Never share your seed phrase or private keys with anyone