issuance_time_basis

Term URI: https://w3id.org/agent-evidence/vocab/v1/issuance_time_basis

Section: evidence_dimensions. Criticality: critical.

Whether a record's earliest-possible signing time is PROVEN, meaning the signed pre-image folds in a publicly datable value that was unpredictable before its round (e.g. a drand round output, or an RFC 9334 Section 10.3 epoch identifier), so the signature cannot predate its round, or merely ASSERTED by the issuer with no such binding. Deliberately one-sided: a proven floor and an asserted ceiling, never claimed as a two-sided proof of freshness.

Registered values

• https://w3id.org/agent-evidence/vocab/v1/issuance_time_basis#beacon_anchored
• https://w3id.org/agent-evidence/vocab/v1/issuance_time_basis#asserted