Unverified50% confidenceFactExact time
True immutability must be embedded in the persistence layer, and any attempt at tampering leaves a detectable trace: the record's hash value changes, and the complete hash chain breaks.
1
Sources
50%
Confidence
Long-term
Relevance
10/16/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedTamper-proof auditing usually relies on hash chains or digital signatures; a hash chain links each log entry's hash value to the previous one, so any tampering breaks all subsequent hashes.66% similarUnverifiedHash chains provide tamper detection rather than tamper prevention, and typically still need to be combined with append-only storage or external witness mechanisms.65% similarUnverifiedExternal reviewers identified three problems with the chain of custody: the chain could be severed or recalculated without anyone noticing, hashes retained only 64 bits, and a single line of garbled text caused a startup crash; all three have been fixed.64% similarUnverifiedZambo's verification mechanism works by pasting the receipt into a verifier to recalculate the hash value; a matching hash indicates the record has not been altered since it was saved.63% similar
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