Re: [Agenda] W3C CCG 2024-02-20 - VC Bitstring Status List

Thank you to Manu and Dave from Digital Bazaar for this presentation! I forwarded the material to our technical team to get their thoughts.

They had the following questions:

  1.  What does the semantics of the bit sequence mean: if it is 1, is it revoked, if it is 0, is it revoked, or if it is 0, is it not revoked?
  2.  Who guarantees that data cannot be created with a different ListIndex? (Is credentialStatus subject to VC signature?)
  3.  I think the gain is reducing the amount of information. When using a bit string and there is one data object, my understanding is that write cannot be executed concurrently. Is that correct? (Wouldn't this be a challenge, especially if you put a Data Registry on the blockchain?)
  4.  What do you think about the governance of the bit index (who can rewrite it)? Ideally, there would be a key pair when adding a single Bit string, and it would be organised in such a way that it cannot be rewritten without the key pair (private key). Is that understanding correct?

Thank you for any comments!

Best,
Stefannie

________________________________
From: Harrison <harrison@spokeo.com>
Sent: Thursday, February 15, 2024 6:00 AM
To: W3C Credentials CG (Public List) <public-credentials@w3.org>
Subject: [Agenda] W3C CCG 2024-02-20 - VC Bitstring Status List

Main Agenda: VC Bitstring Status List

We are excited to have Manu Sporny<https://www.linkedin.com/in/manusporny/> and Dave Longley<https://www.linkedin.com/in/davelongley1/> from Digital Bazaar lead the discussion on "VC Bitstring Status List" at our CCG meeting next Tuesday.  Here is the presentation that they have prepared in advance:  https://docs.google.com/presentation/d/11BBi7vl39xgZin7ex-oEMqHDruzPCG4bACpbo3DY5Vg/edit?pli=1#slide=id.p.


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