BIP-322 Connector

One-click BIP-322 signature verification for Bitcoin wallets with MetaMask-like UX.

Features

• ✅ One-click signing - Simple as MetaMask
• 🔐 BIP-322 compliant - Industry standard
• 🎯 Multi-wallet support - UniSat, Xverse, Leather, OKX
• ⚛️ React component - Drop-in UI widget
• 📦 TypeScript - Full type safety
• 🚀 Zero dependencies - Lightweight

Installation

npm install @reservebtc/bip322-connector

Quick Start

Vanilla JavaScript

import { BIP322Connector, WalletDetector } from '@reservebtc/bip322-connector'

// Detect available wallets
const wallets = WalletDetector.detectAll()
console.log('Available wallets:', wallets)

// Connect and sign
const connector = new BIP322Connector()
await connector.connect('unisat')

const result = await connector.sign(
  'bc1q...',
  'Sign this message'
)

console.log('Signature:', result.signature)

React Component

import { BIP322SignButton } from '@reservebtc/bip322-connector'

function MyApp() {
  const handleSigned = (result) => {
    console.log('Signed!', result)
  }

  return (
    <BIP322SignButton
      message="Sign this message"
      onSigned={handleSigned}
    />
  )
}

API Reference

BIP322Connector

Main class for wallet connection and signing.

Methods:

• connect(walletName: SupportedWallet): Promise<void> - Connect to wallet
• sign(address: string, message: string): Promise<BIP322SignatureResult> - Sign message
• disconnect(): void - Disconnect from wallet
• getWalletName(): SupportedWallet | null - Get connected wallet

WalletDetector

Utility for detecting installed wallets.

Methods:

• detectAll(): WalletDetectionResult[] - Detect all available wallets
• isInstalled(walletName: SupportedWallet): boolean - Check if wallet installed
• getProvider(walletName: SupportedWallet): any - Get wallet provider
• getFirstAvailable(): WalletDetectionResult | null - Get first available wallet

BIP322SignButton (React)

React component for one-click signing.

Props:

• message: string - Message to sign
• onSigned: (result: BIP322SignatureResult) => void - Success callback
• onError?: (error: Error) => void - Error callback (optional)
• className?: string - Custom CSS class (optional)
• style?: React.CSSProperties - Inline styles (optional)

Supported Wallets

• UniSat Wallet
• Xverse Wallet
• Leather Wallet (ex-Hiro)
• OKX Wallet

Examples

See /examples directory for complete examples:

• Vanilla JavaScript example
• React example
• Next.js example

Why BIP-322 Connector?

Before (6 steps, 2 minutes):

1. Install wallet
2. Find signing feature
3. Copy message
4. Paste in wallet
5. Sign
6. Copy signature back

After (1 click, 5 seconds):

<BIP322SignButton message="Sign this" onSigned={handleSign} />

Live Demo

https://app.reservebtc.io/verify

Contributing

We welcome contributions! Please see CONTRIBUTING.md

License

MIT License - see LICENSE

Credits

Built by ReserveBTC team.

Improving Bitcoin DeFi UX, one signature at a time.