Audit trail vs LangSmith / Helicone tracing

Tracing platforms log; audit trails attest. The cryptographic chain is the difference between operational logs and a courtroom artifact.

Dimension	Hash-chained audit	LLM tracing platforms
Tampering detection	SHA-256 chain — verifyChain() returns brokenAt index on any edit.	Trust the storage layer.
Compliance fit	Auditable artifact for SOC 2, ISO 27001, internal controls.	Operational only.
What's recorded	Every state transition, policy decision, payment, verification.	LLM calls + their inputs/outputs.
Spend events	Yes, with cap evidence.	Indirectly, via LLM cost tracking.
Best fit	Regulated companies, auditable workflows, dispute evidence.	Engineering ops, prompt engineering, debugging.

Takeaway

Use tracing for engineering ops; use a hash-chained audit for compliance and disputes. Mission Control's audit ledger is exportable as CSV for SOC 2 evidence packs.

Terms used

Mission
Dispute

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