The Anatomy of a Tamper-Evident Log

▤ Summary

This article explains how tamper-evident logs work and why ordinary digital records can be altered without leaving obvious signs. It walks through cryptographic hashes, hash chaining, Merkle trees, and external anchoring as the core building blocks of trustworthy audit trails. It also argues that logs become meaningful only when changes are detectable and verification can happen offline without trusting the vendor. The piece connects these controls to AI governance, regulatory traceability, and post-quantum security requirements. It frames signed, hash-chained records as a practical foundation for regulated software environments.

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