The record has to exist before it is needed
Most compliance evidence for automated decisions is assembled after the fact, from logs that were never designed to answer the question a review asks: which specific claims did the agent rely on, and can you show they were not altered afterwards? Spread across systems, that evidence is slow to gather and easy to dispute. Signura takes the opposite approach. The record is produced at the moment the agent acts, not reconstructed later.
When a relying agent verifies an attestation at decision time, the exchange logs the reliance event as it happens: the claim that was relied on, its scope and expiry, the party that stood behind it, and the cryptographic proof that was verified. Because the trail is tamper-evident, you can demonstrate that the attestation on record is the one the agent actually verified, and that it has not changed since. That is the difference between asserting a decision was sound and showing the evidence that made it so.
Accountability stays with people, and the record proves it
The design keeps consequential decisions with humans. Issuers decide which facts they will attest to and the liability they will accept; relying-party governors decide which issuers and attestation types their agents may depend on, within configured scope, value thresholds and expiry. The audit ledger records what happened inside those limits, so when a governance or liability review examines a past decision, the boundaries the agent operated within are part of the record rather than a matter of recollection.
Signura is deliberately narrow about what it stands behind. It does not certify that an underlying fact is true; that responsibility rests with the named issuer. What the exchange is accountable for is the integrity of the proof and the accuracy of freshness and revocation status. Stating that limit plainly is what lets a compliance reader rely on the record without having to guess what was not promised.