OccurenceAttestationSignature

The identifier for the public key that verifies this signature. MUST be an RFC3986 conformant URI. * When possible, the key id should be an immutable reference, such as a cryptographic digest. Examples of valid values:

The content of the signature, an opaque bytestring. The payload that this signature verifies MUST be unambiguously provided with the Signature during verification. A wrapper message might provide the payload explicitly. Alternatively, a message might have a canonical serialization that can always be unambiguously computed to derive the payload.