[AIR-3][AIS-3][BPC-3][RES-3]

Bitcoin Improvement Proposal (BIP) Compliance

Overview

Add a brief overview of this document here.

This document outlines the BIPs implemented in Anya Core and their compliance status.

Table of Contents

Implemented BIPs

Consensus Layer

BIP Title Status Notes
9 Version bits with timeout and delay ✅ Implemented -
30 Duplicate transactions ✅ Implemented -
34 Block v2, Height in coinbase ✅ Implemented -
65 OP_CHECKLOCKTIMEVERIFY ✅ Implemented -
66 Strict DER signatures ✅ Implemented -
68 Relative lock-time using consensus-enforced sequence numbers ✅ Implemented -
112 CHECKSEQUENCEVERIFY ✅ Implemented -
113 Median time-past as endpoint for lock-time calculations ✅ Implemented -
141 Segregated Witness ✅ Implemented -
143 Transaction Signature Verification ✅ Implemented -
147 Dealing with dummy stack element malleability ✅ Implemented -
158 Compact Block Filters ✅ Implemented -
340 Schnorr Signatures ✅ Implemented -
341 Taproot ✅ Implemented -
342 Tapscript ✅ Implemented -

Wallet Layer

BIP Title Status Notes
32 Hierarchical Deterministic Wallets ✅ Implemented -
39 Mnemonic code for generating deterministic keys ✅ Implemented -
44 Multi-Account Hierarchy for Deterministic Wallets ✅ Implemented -
49 Derivation scheme for P2WPKH-nested-in-P2SH ✅ Implemented -
84 Derivation scheme for P2WPKH ✅ Implemented -
86 Key Derivation for Single Key P2TR Outputs ✅ Implemented -
174 Partially Signed Bitcoin Transaction Format ✅ Implemented -
370 PSBT Version 2 ✅ Implemented -

Planned BIPs

BIP Title Target Version Notes
118 SIGHASH_ANYPREVOUT v3.0.0 In development
119 CHECKTEMPLATEVERIFY v3.1.0 Planned
350 Output Script Descriptors v3.0.0 In progress

BIP Compliance Testing

Test Vectors

We maintain test vectors for all implemented BIPs:

# Run BIP test suite
cargo test --test bip_tests -- --nocapture

Compliance Matrix

BIP Test Coverage Last Verified Notes
32 100% 2025-05-10 -
39 100% 2025-05-10 -
340-342 98% 2025-05-15 Minor test cases pending

Reference Implementations

We verify our implementation against the following references:

  1. Bitcoin Core
  2. Version: 25.0
  3. Commit: abc1234

  4. Tested against test vectors

  5. Libsecp256k1

  6. Version: 0.3.0
  7. Used for cryptographic primitives

Deviation Policy

When We May Deviate

  1. Security Improvements
  2. If a BIP contains security vulnerabilities

  3. When more secure alternatives exist

  4. Performance Optimizations

  5. Significant performance benefits

  6. No impact on consensus rules

  7. Implementation Constraints

  8. Platform-specific limitations
  9. Hardware constraints

Process for Deviations

  1. Document the deviation in DEVIATIONS.md
  2. Include rationale and security analysis
  3. Get approval from security team
  4. Update documentation

Testing Framework

Unit Tests

#[test]
fn test_bip32_key_derivation() {
    // Test vectors from BIP-32
    let seed = hex::decode("000102030405060708090a0b0c0d0e0f").unwrap();
    let master = ExtendedPrivKey::new_master(Network::Bitcoin, &seed).unwrap();

    // Test derivation path m/0'
    let derived = master.derive_priv(&Path::from_str("m/0'").unwrap()).unwrap();
    assert_eq!(
        derived.to_string(),
        "xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7"
    );
}

Integration Tests

# Run BIP integration tests
cargo test --test bip_integration -- --test-threads=1

Security Considerations

Key Management

  • All keys are derived using BIP-32/39/44
  • Private keys are never stored in plaintext
  • Hardware wallet integration follows BIP-174/370

Transaction Malleability

  • All transaction handling follows BIP-62
  • Strict DER encoding enforced (BIP-66)
  • SegWit (BIP-141) for transaction malleability fixes

Contributing

Adding New BIPs

  1. Create a feature branch: feature/bip-XXX
  2. Implement the BIP with tests
  3. Update this document
  4. Submit a pull request

Testing Requirements

  • 100% test coverage for new BIPs
  • Cross-implementation compatibility tests
  • Fuzz testing for security-critical components

References

See Also