Re: 4-Corner Credential Interoperability Model

Cool, do you have any code to run this?

On Sat, Feb 4, 2023 at 19:38 Michael Herman (Trusted Digital Web) <
mwherman@parallelspace.net> wrote:

> If you use some DIDComm imagination, it's easy to see how the 4-Corner
> Credential Interoperability Model is highly complementary to supporting a
> layered VC model ...here's a glimpse.  "More news at 11..."
>
>
>
>
>
> -----Original Message-----
> From: Steve Capell <steve.capell@gmail.com>
> Sent: Saturday, February 4, 2023 4:24 PM
> To: Michael Herman (Trusted Digital Web) <mwherman@parallelspace.net>
> Cc: public-credentials (public-credentials@w3.org) <
> public-credentials@w3.org>; G. Ken Holman (g.ken.holman@gmail.com) <
> g.ken.holman@gmail.com>; Christopher Allen <
> ChristopherA@lifewithalacrity.com>; sam@prosapien.com
> Subject: Re: 4-Corner Credential Interoperability Model
>
>
>
> I think the 4-corner model is the opposite of the VC model.  It’s a EDI
> message routing framework that delegates the problem of trust (ie trader
> identity verification) to EDI hubs.  Hubs perform a “service” to their
> authenticated subscribers to map messages to the format they need - so
> forget about document integrity (how do you maintain a signature when the
> document is transformed at two hubs?).  There’s nothing verifiable about
> the message that eventually lands with the receiver (through 2 hubs).
> Instead the parties have to trust that the hubs have properly identified
> their clients and have not lost anything in translation
>
>
>
> It’s also expensive (every message attracts  two clip-fees).  I’ve never
> seen this model achieve any significant uptake except in cases where it is
> mandated by a national regulator
>
>
>
> Kind regards
>
>
>
> Steven Capell
>
> Mob: 0410 437854
>
>
>
> > On 4 Feb 2023, at 10:49 pm, Michael Herman (Trusted Digital Web) <
> mwherman@parallelspace.net> wrote:
>
> >
>
> > A colleague of mine, Ken Holman from Ottawa, recently produced a
> conference paper on the topic of the 4-Corner Credential Interoperability
> Model. It's originated in the OASIS Universal Business Language (OASIS-UBL)
> community where they were experiencing problems with spec compliance,
> interoperability, and low/slow technology adoption rates. UBL is a set of
> 90+ schemas defined for the most commonly used business documents used in
> commerce today.
>
> >
>
> > The 4-Corner Credential Interoperability Model is a simple, efficient,
> low-cost approach to enable different communities or trading associations
> to easily interoperate through the exchange of different types of
> credentials. For example, this would be a stepping stone for enabling a
> layered approach to how verifiable credentials are defined, used, and
> exchanged - an opportunity to move away from a "one-size fits all" niche
> VCDM specification to a layered model that addresses the dual needs of:
>
> > a) the layering of simple, more generic models through to more complex
>
> > niche credential specifications,  as well as
>
> > b) an interoperability model that is simple, secure, efficient, and
> low-cost.
>
> >
>
> > Live Presentation: Case study of a semantic library underpinning the
>
> > 4-corner model for document exchange 2022-11-08
>
> >
>
> > https://www.linkedin.com/posts/gkholman_ken-holman-case-study-of-a-sem
>
> > antic-library-activity-7001714323223977985-IKbA
>
> >
>
> > Case study of a semantic library underpinning the four-corner model
>
> > for document exchange
>
> > https://doi.org/10.1075/da.2022.holman.four-corner-model
>
> > Proceedings of Declarative Amsterdam 2022 (7 and 8 November 2022)
>
> > Available under the CC BY 4.0 license.
>
> >
>
> >
>
> >
>
> > Best regards,
>
> >
>
> > Michael Herman
>
> >
>
> > Web 7.0
>
> >
>
> >
>
> > <winmail.dat>
>