Provenrail vs AI observability
The category is full of excellent tools for tracing, evaluating, and debugging AI agents. They all share one design assumption: the record of what happened lives in a database, and you have to trust whoever runs it. Provenrail is built for the opposite case, when a third party needs to verify what your agent did without trusting you, the agent, or the infrastructure.
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Traces, evals, dashboards, cost and latency. Built for the developer in the loop, debugging and iterating. The data lives in a store the vendor or you control, and reading it means trusting that store.
Off-box, hash-chained, signed records with trusted timestamps and a public transparency log. Built for the moment an auditor, a regulator, or a counterparty asks what happened and whether the record was changed after the fact.
These are complements, not enemies. Keep your dashboards. Provenrail answers the one question a dashboard cannot: can you prove, to someone who does not trust you, that this is what happened and that nobody altered it.
We surveyed the major AI agent observability and tracing tools (the well-known dashboards, gateways, and eval platforms in this space) against the features that make a record independently verifiable. The pattern is consistent across the category.
| Capability | Typical observability tool | Provenrail |
|---|---|---|
| Independent verification without trusting the vendora third party checks the record themselves | No | Yes |
| Cryptographic signing of every record | No | Yes |
| Hash-chained, tamper-evident sequencea changed or deleted record is detectable | No | Yes |
| RFC 3161 trusted timestampsindependent proof of when, not just what | No | Yes (Builder and higher) |
| Public transparency log with witness cosignatures | No | Yes (Builder and higher) |
| Open-source offline verifier, no account needed | No | Yes |
| Regulatory evidence packs (EU AI Act, HIPAA)structured for an audit, not a screenshot | No | Yes |
| Built so a third party can verify the record without trusting us | No | Yes |
We built Provenrail to fill a gap we did not find filled in the observability category as we understood it: a record that a third party can verify independently, with no account, using open-source tools that travel with the record. If you know of a tool in this space that ships cryptographic signing, hash-chaining, RFC 3161 trusted timestamps, a public transparency log, and an offline verifier as built-in features, we would genuinely like to know. Email [email protected]. We update this page when the category changes.
One tool does belong in a category of its own here. Microsoft's Agent Governance Toolkit hash-chains agent activity, which most observability tools do not. It does so inside the agent's own process, which is a different guarantee from the one this page is about, and worth understanding on its own terms: Provenrail compared with Microsoft AGT.
Most observability vendors answer the trust question with compliance badges: SOC 2, ISO 27001, HIPAA. Those attest to the vendor's security controls. They do not, and cannot, tell a regulator or a court that one specific trace was not modified after the fact. A SOC 2 report is a statement about a company. An RFC 3161 timestamp plus a Merkle inclusion proof in a public log is a statement about a record. Provenrail produces the second kind.
EU AI Act Article 12 requires tamper-evident logging for high-risk AI systems. For standalone Annex III systems those obligations apply from 2 December 2027, deferred from 2 August 2026 by Regulation (EU) 2026/1744; Annex I product-embedded systems follow on 2 August 2028. Article 50 transparency duties still apply from 2 August 2026. The regulation does not prescribe a cryptographic method, but a log that can be altered without detection has little evidentiary weight. Standard observability achieves technical logging. Provenrail is designed to close the evidentiary gap between a log that exists and a record you can defend, with externally anchored, independently verifiable proof.
Do not take our word for it. Open a record in your browser, then watch the verifier reject a tampered copy. Nothing is sent anywhere; the check runs on your device.
pr verify locally.