Proposal Work Item | Credential Chaining

Dear W3C Credentials Community Group,

I hereby want to propose a new work item on "Chaining of Credentials" 
and I would appreciate some initial feedback before proposing the item 
as an issue at https://github.com/w3c-ccg/community.


At IDunion (https://idunion.org/), we started a working group that is 
focused on the chaining of credentials in September 2021. The working 
group is represented by Deutsche Telekom AG (T-Labs), European EPC 
Competence Center GmbH, Institute for Internet-Security (Westphalian 
University of Applied Sciences), Robert Bosch GmbH, Spherity GmbH, 
TrustCerts GmbH, and more, counting 10 active members.

Currently, our working group is IDunion internal. However, we presented 
our work at the IIW33 in the session “Credential Chaining - Verification 
of VCs In Non-Trivial Trust Networks (Open

Discussion)” and want to make this an open-source community effort.

Our goals are

  * to provide an overview of all existing flavors of credential
    chaining (What current and new techniques exist or are being
    researched?)
  * to gather the reasons and requirements for credential chaining
  * to come up with best practices and create a sort of decision tree
    that helps map the requirements of the use case with the
    implementation of credential chaining
  * to provide working code with concrete implementations on different
    chaining variants
  * to integrate credential chaining into future versions of the
    Verifiable Credentials Data Model

Me and my colleagues are looking forward to your feedback about the idea 
of creating a new, or joining an already existing working group under 
the umbrella of W3C.


Many thanks in advance,

Robin Klemens


---
Blockchain Reseacher
Institute for Internet-Security

https://www.linkedin.com/in/robinklemens/

https://github.com/udosson <https://github.com/udosson>