Replace OB 2.0 RevocationList with VC CredentialStatus

[amiller-ims]

In OB 2.0, the issuer of a signed badge MAY provide a revocationList URL in their profile that a verifier can use to determine if a signed badge has been revoked.

The Revocation List is a document that describes Assertions or Endorsements that an Issuer has revoked that used the signed verification method. If you find the badge in the revokedAssertions list, it has been revoked.

In VC 1.1, the issuer MAY include a credentialStatus object in the verifiable credential that does substantially the same.

This specification defines the following credentialStatus property for the discovery of information about the current status of a verifiable credential, such as whether it is suspended or revoked.

This issue is to capture the discussion and decisions for the following:

• Remove the revocationList property from the Profile class and remove the RevocationList class from the data model
• Add the CredentialStatus class to the common_credentials data model and add the credentialStatus property to both ClrCredential and AssertionCredentials classes
• Select a Status method to endorse from the list of proposed methods, from a list of other proposed methods such as RevocationList2020, or author one as part of this standard.
• Support for the selected Status method would be required for the appropriate conformance.

References

• OB 2.0 RevocationList
• VC 1.1 Status

[amiller-ims]

or author one as part of this standard.

A custom credential status method may be able to handle both revocation and CLR pruning (the CLR issuer "prunes" formative assertions/results without changing the CLR's id). CLR pruning may be out-of-scope.

[amiller-ims]

Issued replaced by #376