Prof. Dr. David Chadwick: I Want COVID-19 Certificates But I Don't Want a DID

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The W3C Verifiable Credentials Data Model is being used as the basis for creating standardised COVID-19 certificates of different types: vaccination, test and immunity certificates. 

As the W3C Recommendation clearly states, "DIDs are a new type of identifier that are not necessary for verifiable credentials to be useful. Specifically, verifiable credentials do not depend on DIDs and DIDs do not depend on verifiable credentials." So why are most implementers insisting on building COVID-19 certificates with DIDs and blockchains? This talk will provide an answer to this question, and show how COVID-19 certificate eco-systems can be built without recourse to DIDs or blockchains.

About the author: David has been an invited expert to the W3C Verifiable Credentials Working Group since its inception, and is a co-author of the W3C VC Recommendation and its accompanying Implementation Guidelines.

Verifiable Credentials Ltd is a spin-out SME from the University of Kent, formed to exploit the Verifiable Credentials Middleware created by the University in a project sponsored by Innovate UK.

Language: English • Duration: 19:17 • Resolution: 1280x720

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