Implementing Bitcoin Wallet

Overview

This skill guides you through implementing a complete Bitcoin wallet system with on-chain transaction support, UTXO management, and integration with Nostr key infrastructure.

Core Capabilities:

• Send/receive on-chain Bitcoin transactions
• UTXO management and consolidation
• Bitcoin address derivation from Nostr public keys
• Transaction history tracking
• QR code support for addresses
• Fee estimation and transaction building

Key Architecture Pattern: The wallet derives Bitcoin addresses from Nostr public keys, enabling users to access Bitcoin using their Nostr identity without managing separate keys.

Prerequisites

Before implementing a Bitcoin wallet, ensure: