🚀 Web3 Wallet (Testnet/Devnet Only)

A secure, non-custodial crypto wallet built from scratch — no MetaMask, no third-party wallets — just raw blockchain integration.

• ✅ Supports Ethereum (Sepolia) & Solana (Devnet)
• 🔐 Wallet generation, transaction signing, sending & receiving — all handled client-side

🔑 Key Features

• 🔐 BIP39/BIP44 Compliant Wallet Generation Generate mnemonic and derive keys for both Ethereum and Solana from a single seed.

• 🌐 Testnet / Devnet Support

  • Ethereum: Sepolia

  • Solana: Devnet

• 📦 Manual Key Management No third-party wallet providers (MetaMask/Phantom). Full control over private keys.

• 🔄 Transaction Processing Built-in transaction builder and sender via Alchemy RPC.

• 💰 Live Balance Check View your real-time balances across chains (testnet, devnet).

• 📤 Send & Receive Tokens Enter the amount + address and fire transactions directly from your browser.

• 🛡️ Client-side Encryption Private keys are encrypted in the browser using a user-defined password.

⚠️ Important Notes

• This wallet is intended for educational/testing purposes only.

• Only works with Testnet/Devnet tokens (eth, sol).

Technologies Used

Category	Tech Used
Core	BIP39, BIP44, HD Wallet Derivation
Blockchain	Ethers.js, Solana Web3.js, Alchemy API
Frontend	React, Tailwind CSS
State Management	Zustand
Cryptography	crypto-js, @scure/bip39, manual PK crypto

Installation

git clone https://github.com/Khizarshah01/web3-wallet.git
cd web3-wallet
npm install
npm run dev

• Make sure to add your Alchemy API keys in a .env

VITE_ALCHEMY_API_KEY=
GEEKO_KEY=

Screenshots

DashBoard page

Send page

Receive Page