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Call Link: https://zoom.us/j/97954159540?pwd=WWk3WmQ3MVh1SXBYZGVreGl0QllGdz09

Recording: 

Notices: 

This specification creating group operates under the Linux Foundation Community Specification License v1.0.

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Stephen Curran (BC Gov / Cloud Compass Computing Inc.) <swcurran@cloudcompass.ca>

Steve McCown (Anonyome Labs) <smccown@anonyome.com>

Artem Ivanov (DSR Corporation) <artem.ivanov@dsr-corporation.com>

Related Repositories:

• AnonCreds Specification: https://hyperledger.github.io/anoncreds-spec/
• AnonCreds Methods Registry: https://hyperledger.github.io/anoncreds-methods-registry
• AnonCreds Rust Open Source Code: https://github.com/hyperledger/anoncreds-rs

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• PRs to Review
• Design and planning – AnonCreds v1.0 in the W3C Verifiable Credentials Data Model Standard format
  • The BC Gov Code With Us on AnonCreds Rust – https://marketplace.digital.gov.bc.ca/opportunities/code-with-us/d81f1bb4-4abb-4a4c-8b19-92904e0bd6a6
  • PR with a starting point for discussing the design: https://github.com/hyperledger/anoncreds-rs/pull/266
    • Questions Raised:
      
      • JSON-LD processing on the contexts?
        • No
      • Identifier within the CredentialSubject ?
        • No
      • Nested JSON and Arrays in AnonCreds credentials.
        • Not supported
      • Encoding scheme – move into AnonCreds or leave for the issuer?
        • Leave
      • Time of Day for the `IssuanceDate` field - random? Zeroed?
      • Use of the term "Data Integrity Proof" to differentiate AnonCreds and non-AnonCreds Data Integrity Proofs.
      • Simple vs. complex/size efficient encoding of the proof data into a single "proof" JSON item?
        • TBD – start simple
      • "mapping" of source VC attributes/predicates to the presentation request.
      • Using other than the AnonCreds presentation request model
        • No
      • Support in the AnonCreds library for signing W3C VC/VP Format Data Integrity Proofs with other Proof Types.
        • No
        • There might be some "devil in the details" in this. Do we have to add extra values (notably issuer ) to have a second signature?
      • Altering the format/Data Model of the Credential Offer and Request format.
        • No
      • Proposed AnonCreds library API changes.
        • For others to review
      • Using AnonCreds W3C format with OpenID4VCs.  Can OpenID4VCs support the necessary Offer-Request-Issuer flow?
        • TBD
  • Downstream Code With Us opportunities for Aries Cloud Agent Python and Aries Framework JavaScript
• Update on AnonCreds v2.0 Work
  • Updated README - PR
  • List of "To Do" Issues
  • ALLOSAUR
    • Question: Can someone that sees the data sent to the Revocation Manager learn anything about the sender? Is the data a correlatable identifier?
      • For example, if the holder passes the request to the Revocation Manager for an update uses a proxy?
    • Answer: The proxy would not learn anything about the holder – would not get a correlatable (linkable) identifer for the holder.
    • Potential Use Case:
      • Verifier requests proof from a holder.
      • Holder requests revocation updates from the verifier, who proxies the request to a revocation manager.
      • Verifier returns the response to the holder.
      • Holder uses the response in the presentation generation process to create the non-revocation proof.
• Open discussion

Future Calls

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