coldkeep v0.4.0 — Integrity Verification Layer

[franchoy]

coldkeep v0.4 introduces a complete integrity verification layer for the storage engine.

This release focuses on ensuring that stored data is not only consistent at the
metadata level, but also physically correct on disk.

The system provides multi-level verification capabilities, allowing users to
detect inconsistencies, structural issues, and actual data corruption.

Highlights

• Multi-level verification: standard, full, deep
• System-wide verification across all containers
• Per-file verification with detailed consistency checks
• End-to-end data integrity validation (recompute chunk hashes from disk)
• Record-level validation (header + size + data)
• Detection of physical data corruption
• Comprehensive integration tests for clean and corrupted scenarios

The new verification system enables:

• Metadata integrity validation (reference counts, ordering, relationships)
• Container structure validation (existence, size, hash correctness)
• Full physical verification by reading stored data and recomputing hashes

Deep verification performs a full scan of container data and is intended for
periodic integrity audits rather than frequent execution.

coldkeep remains an experimental research project and is not production ready.
The on-disk format may change before v1.0.

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This discussion was created from the release coldkeep v0.4.0 — Integrity Verification Layer.