Would some form of Evidence tag work for your usecase? An Attestation event could optionally reference your (Release) Verification event in this way. We refer to the process of arriving at an Attestation state (valid/invalid) as the verification process, but we are silent on what that process is as it's Subject Event - and often Attestor specific - and is down for the WoT to weigh those. Some form of evidence expectation could optionally be included in the Attestation Request. 🤔