feat: Add Taproot Transaction Support with Schnorr Signatures

[ygcl9698]

Overview

This PR implements Taproot transaction support using Schnorr signatures. It provides functionality for creating Taproot addresses and signing transactions on Bitcoin testnet.

Key Changes

• Implement SchnorrSigner class for handling Taproot key operations
• Add P2TR address creation functionality
• Add support for Taproot transaction signing with Schnorr signatures
• Include comprehensive debug logging for transaction verification
• Support Bitcoin testnet for testing purposes

Technical Details

• Uses bitcoinjs-lib v6.1.5 for Taproot support
• Implements x-only public key handling
• Adds proper Schnorr signature support for Taproot inputs
• Includes transaction debugging and verification tools

Dependencies

• bitcoinjs-lib@6.1.5
• ecpair
• @bitcoinerlab/secp256k1

Testing

Tested on Bitcoin testnet with the following scenarios:

• Taproot address creation
• Transaction signing
• Witness script verification

Note: Requires Node.js 20+ for proper functionality.

[LegendarySSS]

I was learning how to add Taproot trading support and happened to see this pr, which was very enlightening to me, thank you.

[ygcl9698]

I was learning how to add Taproot trading support and happened to see this pr, which was very enlightening to me, thank you.

I'm glad I could help you😁

[jasonandjay]

thanks for your contribution. add wechat DappLearning to join our developer group

[0x-stan]

Thanks for the PR! Please add more content, such as a README that includes a detailed explanation of the process and underlying principles.