- From: Steve Capell <steve.capell@gmail.com>
- Date: Sun, 5 Feb 2023 09:23:42 +1100
- 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
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-semantic-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>
Received on Saturday, 4 February 2023 22:24:08 UTC