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CR: Verifiable Credentials Data Model 1.0

From: Notifier <sysbot+notifier@w3.org>
Date: Thu, 28 Mar 2019 09:43:32 +0000
To: public-review-announce@w3.org
Message-ID: <6fa003c3-601a-9af8-9e36-36524951a714@w3.org>
Verifiable Credentials Data Model 1.0


feedback due by: 2019-04-25


Credentials are a part of our daily lives; driver&#x27;s licenses are used to assert that we are capable of operating a motor vehicle, university degrees can be used to assert our level of education, and government-issued passports enable us to travel between countries. This specification provides a mechanism to express these sorts of credentials on the Web in a way that is cryptographically secure, privacy respecting, and machine-verifiable.

Status of the Document

This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at https://www.w3.org/TR/. 

Comments regarding this document are welcome. Please file issues directly on GitHub, or send them to public-vc-comments@w3.org (subscribe, archives). 

The Working Group seeks implementation feedback, having set the requirement of at least two implementations of each feature as the exit criteria for the Candidate Recommendation phase. The group aims to obtain reports from two producers and two consumers for each feature if possible. For details, see the test suite and sample implementation report. 

The following features are considered at risk of removal due to potentially insufficient implementation experience (reports): credentialSchema property, refreshService property, evidence property, zero-knowledge proof support, disputedClaim property, JWT support, nonTransferable property. 

Changes since the last publication of this document include: 
  * Editorial modifications to group similar information together and make the document flow easier to navigate. 
  * Added a Concrete Lifecycle Example. 
  * Modified conformance statements to ensure that all conformance statements are testable. 
  * Renamed subject to credentialSubject. 
  * Clarified that verifiable credentials and verifiable presentations MUST include the @context property and that for a VC or VP to be verifiable at least one proof mechanism MUST be expressed: external or embedded. 
  * Clarified that a VC MUST contain the issuer and issuanceDate properties. 
  * Significant clarifying text added for Zero-Knowledge and JWT use. 
  * Added section on Proof Formats. 
  * Clarified JSON-LD Context URLs and their cache-ability. 
  * Refactored Verification section to a non-normative Validation section. 
  * Marked a number of features as features at risk and documenting implementation details that may change based on feedback from implementers. 
  * Privacy, Security, Accessibility, and (new) Internationalization Considerations all promoted to top level. 
  * Moved some content out to an Implementation Guidance document.  

This document was published by the Verifiable Claims Working Group as a Candidate Recommendation. This document is intended to become a W3C Recommendation.

GitHub Issues are preferred for discussion of this specification. Alternatively, you can send comments to our mailing list. Please send them to public-vc-comments@w3.org (archives).

W3C publishes a Candidate Recommendation to indicate that the document is believed to be stable and to encourage implementation by the developer community. This Candidate Recommendation is expected to advance to Proposed Recommendation no earlier than 25 April 2019.

Please see the Working Group&#x27;s implementation report.

Publication as a Candidate Recommendation does not imply endorsement by the W3C Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.

This document was produced by a group operating under the W3C Patent Policy. W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) must disclose the information in accordance with section 6 of the W3C Patent Policy.

This document is governed by the 1 March 2019 W3C Process Document.
Received on Thursday, 28 March 2019 09:43:34 UTC

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