Consume supported UDR/UDS and reject invalid inputs.
Compatibility evidence · optional
Prove that independent software interoperates with UD.
Certification tests compatibility against a named profile and suite. It is not a security, legal, regulatory, identity, or commercial endorsement.
Certification scopes
Claim only what the product implements.
Emit canonical UDR and append-only revisions.
Handle UDS integrity, signature semantics, tampering and wrong keys.
Preserve exact embedded bytes and offline behavior.
Authoritative lookup
Issued certification records
Controlled previews prove the workflow, not third-party adoption.
