Glossary

What is a tamper-evident audit log?

A tamper-evident audit log is an append-only record of every action in a process, secured so that any alteration is detectable (typically via cryptographic hashing or signing). For lenders, it provides a defensible history of who did what, when, and why — evidence an examiner can trust.

Append-only vs editable logs

An ordinary log can be edited or deleted, which undermines its evidentiary value. A tamper-evident log is append-only and chained, so removing or changing an entry breaks the chain and is detectable on verification.

How Hadrian implements it

Hadrian writes case transitions to an append-only audit ledger with signed integrity hashes; records cannot be silently deleted, and a verification pass confirms the chain is intact. The result is a record built to survive scrutiny.

FAQ

Tamper-Evident Audit Log — common questions

Why can't you just delete test or bad data?

In a tamper-evident system you don't delete — you record a signed corrective transition. That preserves the integrity of the chain while reflecting reality.

Evidence graph Regulation B

The institution around the intelligence

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