# Bitcoin Protocol Implementation [AIR-3][AIS-3][BPC-3][AIT-3]
This directory contains the core Bitcoin protocol implementation for Anya Core, implementing official Bitcoin Improvement Proposals (BIPs) including BIP-340 (Schnorr Signatures), BIP-341 (Taproot), BIP-342 (Tapscript), BIP-174 (PSBT), and BIP-370 (PSBT v2).
## Overview
The Bitcoin implementation provides a comprehensive integration with the Bitcoin protocol, supporting advanced features such as Taproot, Schnorr signatures, and PSBT.
## Architecture
The implementation follows a hexagonal architecture pattern with:
- **Core**: Core Bitcoin functionality
- **Adapters**: Integration with external systems
- **Ports**: Interfaces for communication
```
+----------------+
| Bitcoin Core |
+-------+--------+
|
+-------v--------+
| Adapter Layer |
+-------+--------+
|
+----------------+ +-------v--------+ +----------------+
| (APIs, Wallets)| +-------+--------+ | (Prometheus) |
+----------------+ | +----------------+
+-------v--------+
| Protocol |
| Adapters |
+-------+--------+
|
+-------v--------+
| Blockchain |
| Network |
+----------------+
```
## Key Components
### Core Components
- **Bitcoin Protocol**: Implementation of the Bitcoin protocol
- **Transaction Processing**: Handling of Bitcoin transactions
- **UTXO Management**: Management of unspent transaction outputs
- **Mempool**: Transaction memory pool implementation
- **Block Processing**: Processing of Bitcoin blocks
### BIP Implementation
The implementation supports the following BIPs:
- **BIP-340**: Schnorr Signatures for Bitcoin
- **BIP-341**: Taproot: SegWit version 1 spending rules
- **BIP-342**: Validation of Taproot Scripts
- **BIP-174**: Partially Signed Bitcoin Transactions
- **BIP-370**: PSBT Version 2
### Security Features
- **Secure Transaction Validation**: Comprehensive transaction validation
- **Advanced Cryptography**: Secure cryptographic implementations
- **Tamper-Proof Design**: Protection against tampering and manipulation
- **Security Auditing**: Regular security audits and vulnerability checks
## Usage
The Bitcoin implementation provides:
- Transaction creation and signing
- Block validation and processing
- UTXO management
- Mempool management
- Network communication
## Bitcoin Protocol Compliance
The implementation is fully compliant with the Bitcoin protocol:
- [BPC-3] Bitcoin Protocol Compliance level 3
- Full support for Taproot and Schnorr signatures
- PSBT v2 implementation
- Comprehensive validation and testing
## Development
To contribute to the Bitcoin implementation:
1. Read the [Contributing Guide](../../dependencies/CONTRIBUTING.md)
2. Follow the [AI Labeling Standards](../../docs/AI_LABELING.md)
3. Ensure all code meets [BIP Compliance Standards](../../docs/BIP_COMPLIANCE.md) requirements
## Testing
All Bitcoin components are tested using:
- Unit tests in `tests/bitcoin/`
- Integration tests for cross-component functionality
- Compliance tests for Bitcoin protocol compatibility
- Adversarial testing for security validation
## Documentation
For more information, see:
- [Bitcoin Protocol Documentation](README.md): Complete Bitcoin documentation
- [BIP Compliance Matrix](../../docs/BIP_COMPLIANCE.md): Detailed BIP compliance information
- [Security Architecture](../../docs/SECURITY_ARCHITECTURE.md): Security design and implementation
## Version Information
- Current Version: 3.1.0
- Last Updated: 2025-04-28
- Bitcoin Improvement Proposals: BIP-340, BIP-341, BIP-342, BIP-174, BIP-370
*This component complies with [AI Labeling Standards](../../docs/AI_LABELING.md)*