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RE: [PROPOSED WORK ITEM] Vaccination Certificate Vocabulary

From: John, Anil <anil.john@hq.dhs.gov>
Date: Thu, 18 Feb 2021 15:36:01 +0000
To: W3C Credentials CG <public-credentials@w3.org>
Message-ID: <MN2PR09MB5626F5189D25198DAC2380C5C5859@MN2PR09MB5626.namprd09.prod.outlook.com>
Very much agree.

As an FYI, our internal rationale for why we are on this public journey in the DID/VC ecosystem has multiple components:

  *   Technical ~ Need for systems and services that are resilient, self-healing, and can operate under duress in a world where perimeter-based security is no longer enough.
  *   Business ~ Prevent development of “walled gardens” or closed technology platforms that do not support common standards for security, privacy, and data exchange.
  *   Society ~ Remove limits on the growth and availability of a competitive marketplace of diverse, interoperable solutions for government and industry to draw upon to deliver cost effective and innovative solutions that are in the public interest.

The “ … in the public interest” bit REQUIRES us to deliberately, consistently and with discipline focus on ensuring equity and access. Not saying that we get it right all the time or that we succeed every time, but we try and will keep trying.

<step-off-my-soapbox />

Best Regards,


From: Leonard Rosenthol <lrosenth@adobe.com>
Sent: Thursday, February 18, 2021 9:56 AM
To: John, Anil <anil.john@hq.dhs.gov>; W3C Credentials CG <public-credentials@w3.org>
Subject: Re: [PROPOSED WORK ITEM] Vaccination Certificate Vocabulary

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>The use case is to ensure equity and access … Globally, and not just in the fully connected world.

And this needs to be true for *EVERYTHING* we design and build – not just this project.


From: "John, Anil" <anil.john@hq.dhs.gov>
Date: Thursday, February 18, 2021 at 8:39 AM
To: W3C Credentials CG <public-credentials@w3.org>
Subject: RE: [PROPOSED WORK ITEM] Vaccination Certificate Vocabulary
Resent-From: <public-credentials@w3.org>
Resent-Date: Thursday, February 18, 2021 at 8:36 AM

> More generally, what is the evidence / use case metrics for offline verifiers ?

“offline” has nuances.
Is it never online, or is it occasionally connected over sparse or unreliable networks?
I would assume (as I don’t have ready access to data that will prove/disprove this assertion) that it is more likely to be the latter and not the former.

However, to answer your actual question  -

The use case is to ensure equity and access … Globally, and not just in the fully connected world.

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 Thursday, 18 February 2021 15:36:42 UTC

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