---
term: "Tamper-evident log"
category: "Evidence and audit"
url: https://agenticopenfinance.com/glossary/tamper-evident-log
source: AgenticOpenFinance glossary
---

# Tamper-evident log

> A log built so that any later change, deletion or reordering of entries can be detected.

A tamper-evident log is a record built so that any later alteration, deletion or reordering of its entries can be detected, typically by chaining each entry to the previous one with a cryptographic hash and signing or publishing checkpoints. It does not prevent tampering, but it makes tampering visible to anyone who checks. For agentic finance, it gives an evidence pack integrity, so that the operator of an agent cannot quietly rewrite what the agent did.

Related terms: [Evidence pack](https://agenticopenfinance.com/glossary/evidence-pack.md), [Audit trail](https://agenticopenfinance.com/glossary/audit-trail.md), [HTTP Message Signatures](https://agenticopenfinance.com/glossary/http-message-signatures.md), [Verifiable credential](https://agenticopenfinance.com/glossary/verifiable-credential.md)