v0.6.0 — Synthetic Gene Mutation System: Evolving Cryptographic Attestation

[0.6.0] - 2026-05-29

Major Feature: Synthetic Gene Mutation System

Introduced a powerful new Synthetic Gene Mutation layer that significantly raises the bar for scrapers, headless browsers, and automated clients.

This system creates a persistent, evolving shared secret state (the "gene") that both client and server mutate in lockstep with every heartbeat, making faithful emulation extremely difficult without running the exact WASM environment.

Key Highlights

• Hybrid Lightweight Gene Model:

  • Primary gene: Vec<u8> (configurable 256–1024 bytes, default 512) representing synthetic DNA.
  • Secondary environment: Bounded record multiset Vec<(u16 symbol, u32 quantity)> (max 48 records) for lightweight Cytosol-inspired reactions.

• Server-Driven Mutation Orders:

  • Server issues compact mutation programs each heartbeat.
  • Client applies mutations to gene + environment in WASM.
  • Resulting gene state is cryptographically bound into the Blake3 hash chain.

• New Stack Machine Opcodes:

  • GENE_LOAD, GENE_STORE
  • MUTATE_POINT, INSERT, DELETE
  • TRANSCRIBE, APPLY_MUTAGEN
  • CONSUME, PRODUCE
  • FINALIZE_GENE_HASH
  • (Full list and semantics in docs/REFRACTORING-v0.6.0.md)

Architectural Improvements

• Shared gene logic between server and WASM client via shared crate for perfect determinism.
• Feature flag gene_mutations (disabled by default for smooth migration).
• Efficient in-memory gene handling with minimal performance impact.
• Full backward compatibility — sessions can still run in classic mode.

Security Enhancements

• Evolving shared secret state that diverges rapidly if not correctly executed.
• Stronger binding between browser environment and attestation.
• Improved resistance to replay, cloning, and partial emulation attacks.
• Maintained strict privacy model (ephemeral sessions only).

Testing & Reliability

• Comprehensive test suite including server-client parity tests.
• Property-based and edge-case testing for mutations.
• Multi-heartbeat chain simulation tests.
• Evasion resistance validation.

Performance

• Heartbeat overhead kept under target (<30ms on typical hardware).
• Minimal increase in WASM binary size.
• Efficient serialization and bounded data structures.

Documentation

• Complete refactoring document: docs/REFRACTORING-v0.6.0.md
• Updated architecture diagrams and opcode reference (forthcoming).

This release marks a significant evolution in ChronoSeal’s anti-automation capabilities while preserving its core values of lightness, privacy, and maintainability.

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