W3C home > Mailing lists > Public > public-credentials@w3.org > April 2021

RE: CBOR-LD stabilization (was: Re: Regarding CBOR-LD Web Transports)

From: John, Anil <anil.john@hq.dhs.gov>
Date: Wed, 28 Apr 2021 20:24:09 +0000
To: "public-credentials@w3.org" <public-credentials@w3.org>
Message-ID: <SA1PR09MB8815EE0791969E792C8C0CFDC5409@SA1PR09MB8815.namprd09.prod.outlook.com>
>The use case driving this stuff is the vaccination certificate work as well as anti-fraud features on government-issued ID cards.

DHS/SVIP/USCIS interest in this is two-fold:

1) We are a consumer/verifier of proof of vaccination as mandated by U.S. Law (See https://www.uscis.gov/tools/designated-civil-surgeons/vaccination-requirements ).  Equity and access in the use of such credentials requires us to support paper based representations that are completely standards based, and can use the same verification infrastructure as digital with minimal to no cost. 

So the ability to round trip (VC <> CBOR-LD based QR Code <> VC) from digital to paper and back while maintaining the fidelity of the digital signature in a small size QR code is highly desired and attractive to us as an option that provides a clear bridge across the digital divide!  Given our existing investments in demonstrably interoperable VC/DID implementations, supporting bespoke implementations increases cost and complexity while not serving the needs of the many -- not a path to success for us!

2) We are moving forward on implementing the infrastructure to issue Digital Immigration Credentials such as Digital Permanent Resident Cards (PRC), Employment Authorization Documents and the like that are in full compliance with the W3C Verifiable Credential and W3C Decentralized Identifier standards in a manner that provides agency, control and consent to the holder in how such data is used.  Simultaneously, we are actively exploring the feasibility of printing the CBOR-LD VC Version of the PRC directly on the current paper based document as a possible option to enable ease of verification and prevent counterfeiting, and will be testing these options out to understand its various implications going forward.

Best Regards,


Anil John
Technical Director, Silicon Valley Innovation Program 
Science and Technology Directorate 
US Department of Homeland Security 
Washington, DC, USA 

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Received on Wednesday, 28 April 2021 20:29:42 UTC

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