Attestation type registry

Canonical URIs under the work.extol.attestation namespace, maintained by Extol.

Each URI here names a class of attestation implementable by any Attestation Notary-conforming system. URIs resolve to human-readable documentation (linked below) and a machine-readable JSON schema at the same path plus /schema.json.

These URIs are subject to permanence discipline: their semantics are stable indefinitely. Field additions may occur without notice; field renames or removals require a new URI version (/v2/). Attestations signed against these URIs remain valid interpretable records for as long as the Notary Spec itself is honored.

Statement (HR-1 §71119)

Organizational identity (Pattern 3)

Permanence commitment

A complete catalog of minted URIs with the "MUST NOT remove or change semantically" contract lives in CANONICAL_URIS.md in the extol-marketing repository. Any PR that removes or renames a URI requires explicit reviewer sign-off confirming that no known attestations have been signed against it, or that the removal has been coordinated with all known implementations.