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<meta itemprop="headline" content="Credentials Community Group - W3C">
<meta itemprop="description" content="explore the creation, storage, presentation, verification, and user control of credentials. We focus on a verifiable credential (a set of claims) created by an issuer about a subject—a person, group, or thing—and seek solutions inclusive of approaches such as: self-sovereign identity; presentation of proofs by the bearer; data minimization; and centralized, federated, and decentralized registry and identity systems.">
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<a href="https://decentralized-id.com/web-standards/sdo/w3c/credentials-community-group/" class="u-url" itemprop="url">Credentials Community Group - W3C
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2 minute read
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<header><h4 class="nav__title"><i class="fas fa-link"></i> Contents</h4></header>
<ul class="toc__menu"><li><a href="#main">Main</a></li><li><a href="#meetings">Meetings</a></li><li><a href="#about">About</a></li><li><a href="#standards-work">Standards Work</a></li><li><a href="#reports">Reports</a></li></ul>
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<h2 id="main">Main</h2>
<p><a href="https://github.com/w3c-ccg/">GitHub</a> - <a href="https://lists.w3.org/Archives/Public/public-credentials/">Mailing List Archive</a> - <a href="https://www.w3.org/community/credentials/charter">Charter</a> - <a href="https://w3c-ccg.github.io/meetings/">Meetings</a> - <a href="https://w3c-ccg.github.io/announcements/">Announcements</a> - <a href="irc://irc.w3.org/#credentials">IRC</a></p>
<ul>
<li><a href="https://www.w3.org/community/credentials/">Credentials Community Group</a> 2014-08-08 W3C
<blockquote>
<p>to explore the creation, storage, presentation, verification, and user control of credentials. We focus on a verifiable credential (a set of claims) created by an issuer about a subject—a person, group, or thing—and seek solutions inclusive of approaches such as: self-sovereign identity; presentation of proofs by the bearer; data minimization; and centralized, federated, and decentralized registry and identity systems. Our tasks include drafting and incubating Internet specifications for further standardization and prototyping and testing reference implementations.</p>
</blockquote>
</li>
<li><a href="https://w3c-ccg.github.io/">W3C Credentials Community Group</a> Credentials Community Group
<blockquote>
<p>Increasing trust on the Web, one spec at a time.</p>
</blockquote>
</li>
<li><a href="https://lists.w3.org/Archives/Public/public-credentials/2021May/0150.html">CCG 101 - Help us know what is needed!</a> 2021-05-25 Victor Syntez
<blockquote>
<p>Ive invited you to fill out the following form:
<a href="https://docs.google.com/forms/d/e/1FAIpQLSe3OakcEg8IfWXYALg10eiii2hiLKq2vXC-yazpPk0QVzIMzQ/viewform?vc=0&amp;c=0&amp;w=1&amp;flr=0&amp;usp=mail_form_link">CCG 101 - Help us know whats needed!</a></p>
</blockquote>
</li>
<li>[GDocs] <a href="https://docs.google.com/document/d/1vj811aUbs8GwZUNo-LIFBHafsz4rZTSnRtPv7RQaqNc/">W3C-CCG Work Item Process</a> 2020-06-19 Credentials Community Group
<blockquote>
<p>In general, any work that advances the mission is welcome for consideration as a Work Item. A Work Item requires at least one group member willing to commit to being the first editor, another group member (from a different company) willing to be a co-editor, a suggested timeline, and the expected Work Item type, e.g., Community Final Report or Ongoing Repository.</p>
</blockquote>
</li>
</ul>
<h2 id="meetings"><a href="https://w3c-ccg.github.io/announcements/">Meetings</a></h2>
<ul>
<li><a href="https://w3c-ccg.github.io/meetings/">Meeting Transcriptions and Audio Recordings (2014-today)</a>
<ul>
<li><a href="https://w3c-ccg.github.io/vc-ed/">Verifiable Credentials for Education task force</a></li>
<li><a href="https://meet.w3c-ccg.org/vcapi">Verifiable Credentials API</a> - how we exchange credentials over REST</li>
<li><a href="https://meet.w3c-ccg.org/traceability">Supply Chain Traceability with Verifiable Credentials</a></li>
<li><a href="https://forms.gle/HGGiFtgASUqWRqTLA">Confidential Storage</a></li>
</ul>
</li>
</ul>
<h2 id="about">About</h2>
<ul>
<li><a href="https://lists.w3.org/Archives/Public/public-credentials/2022Apr/0117.html">IRC mailing list bridge</a> 2022-04-23 Charles E. Lehner
<blockquote>
<p>Notifications of messages to this mailing list (public-credentials) are now sent to our IRC channel (#ccg).</p>
</blockquote>
</li>
<li><a href="https://lists.w3.org/Archives/Public/public-credentials/2021May/0169.html">CCG updates to cgbot and scribe-tool</a> 2021-05-30 Manu Sporny
<blockquote>
<p>These are baby steps towards an attempt at auto-transcription and auto-publication of minutes. There are a few things that arent automated yet (like auto-detecting the meeting name)… ETA on those upgrades is unknown since all these upgrades are on a best effort basis.</p>
</blockquote>
</li>
<li><a href="https://lists.w3.org/Archives/Public/public-credentials/2022Mar/0151.html">Reminder: You can present to the CCG</a> 2022-03
<blockquote>
<p>This is a friendly reminder that anyone in the community that is doing something interesting that you think the community should know about whether that work is done here in the CCG or elsewhere, can email the chairs with what you want to share and we can get you on the calendar. Its best if you email all 3 chairs.</p>
</blockquote>
</li>
<li><a href="https://www.w3.org/community/credentials/launch-pr-draft/">W3C Credentials Community Group Launch Announcement</a> 2014-08-10 Manu Sporny
<blockquote>
<p>The Credentials Community Group has been launched to create a common way of storing and transmitting low-stakes and high-stakes credentials both on the Web and in the physical world. The founding members of the group include Educational Testing Service (ETS), British Computer Society (BCS), Badge Alliance, Conexxus, Standard Treasury, Accreditrust, Digital Bazaar, NBREDS, COMPANY_X, COMPANY_Y, … and COMPANY_Z.</p>
</blockquote>
</li>
</ul>
<h2 id="standards-work">Standards Work</h2>
<ul>
<li><a href="https://lists.w3.org/Archives/Public/public-credentials/2022Mar/0068.html">2022-2026 Verifiable Data Standards Roadmap [DRAFT]</a> 2022-03-12 Manu Sporny
<blockquote>
<p><img src="https://lists.w3.org/Archives/Public/public-credentials/2022Mar/att-0068/2022_Verifiable_Data_Standards_Roadmap.png" alt="" /></p>
</blockquote>
</li>
</ul>
<h2 id="reports">Reports</h2>
<ul>
<li><a href="https://www.w3.org/community/reports/credentials/CG-FINAL-rdf-dataset-canonicalization-20221009/">RDF Dataset Canonicalization</a> 2022-10-12</li>
<li><a href="https://www.w3.org/community/reports/credentials/CG-FINAL-lds-jws2020-20220721/">JSON Web Signature 2020</a> 2022-07-26</li>
<li><a href="https://www.w3.org/community/reports/credentials/CG-FINAL-di-ecdsa-2019-20220724/">ECDSA Cryptosuite v2019</a> 2022-07-26</li>
<li><a href="https://www.w3.org/community/reports/credentials/CG-FINAL-di-eddsa-2020-20220724/">EdDSA Cryptosuite v2020</a> 2022-07-26</li>
<li><a href="https://www.w3.org/community/reports/credentials/CG-FINAL-data-integrity-20220722/">Data Integrity 1.0</a> 2022-07-26</li>
<li><a href="https://www.w3.org/2019/08/did-20190828/">Decentralized Identifiers (DIDs) v0.13 Data Model and Syntaxes</a> 2019-09-13</li>
<li><a href="https://www.w3.org/2017/05/vc-use-cases/CGFR/2017-05-01/">Verifiable Claims Use Cases 1.0</a> 2017-05-12</li>
<li><a href="https://www.w3.org/2017/05/vc-data-model/CGFR/2017-05-01/">Verifiable Claims Data Model and Representations 1.0</a> 2017-05-12</li>
</ul>
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<p class="page__date"><strong><i class="fas fa-fw fa-calendar-alt" aria-hidden="true"></i> Updated:</strong> <time class="dt-published" datetime="2023-07-03">July 3, 2023</time></p>
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<br><strong><a href="/web-standards/w3c/verifiable-credentials/data-integrity-bbs+/" rel="permalink">Verifiable Credentials with JSON-LD and BBS+ Signatures
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<p class="archive__item-excerpt" itemprop="description">BBS signatures were implicitly proposed by Boneh, Boyen, and Shacham (CRYPTO 04) as part of their group signature scheme, and explicitly cast as stand-alone signatures by Camenisch and Lysyanskaya (CRYPTO 04). A provably secure version, called BBS+, was then devised by Au, Susilo, and Mu (SCN ...</p>
<p class="page__meta"><strong>Updated:</strong> 2023-09-29 <i class="far fa-clock" aria-hidden="true"></i>
8 minute read
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<small><strong>Tags:</strong></small>
<div class="tags">BBS</div>
<div class="tags">Data Integrity</div>
<div class="tags">JSON-LD</div>
<div class="tags">Verifiable Credentials</div>
<div class="tags">W3C</div>
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<br><strong><a href="/web-standards/w3c/verifiable-credentials/jose-jwt+cose-cbor/" rel="permalink">Verifiable Credentials with JOSE (JWT) / COSE (CBOR)
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<p class="archive__item-excerpt" itemprop="description">Digital proof mechanisms, a subset of which are digital signatures, are required to ensure the protection of a verifiable credential. Having and validating proofs, which may be dependent on the syntax of the proof (for example, using the JSON Web Signature of a JSON Web Token for proofing a key h...</p>
<p class="page__meta"><strong>Updated:</strong> 2023-09-09 <i class="far fa-clock" aria-hidden="true"></i>
12 minute read
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<small><strong>Tags:</strong></small>
<div class="tags">COSE</div>
<div class="tags">IANA</div>
<div class="tags">JOSE</div>
<div class="tags">JWT</div>
<div class="tags">Verifiable Credentials</div>
<div class="tags">W3C</div>
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<div class="archive__item-teaser">
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<br><strong><a href="/web-standards/w3c/verifiable-credentials/zkp-cl_anoncreds/" rel="permalink">Verifiable Credentials (ZKP-CL) Anoncreds
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<p class="archive__item-excerpt" itemprop="description">This credential format was created specifically to leverage the CL Signatures. JSON-JWT and JSON-LD Signatures each have their own way of representing the meaning of the attributes within a VC. JSON-JWT references an IANA registry and assumes a “closed world” authority model based on that authori...</p>
<p class="page__meta"><strong>Updated:</strong> 2023-09-29 <i class="far fa-clock" aria-hidden="true"></i>
6 minute read
</p>
<small><strong>Tags:</strong></small>
<div class="tags">Anoncreds</div>
<div class="tags">Evernym</div>
<div class="tags">Hyperledger Foundation</div>
<div class="tags">IBM</div>
<div class="tags">IDEMIX</div>
<div class="tags">Sovrin Foundation</div>
<div class="tags">Verifiable Credentials</div>
<div class="tags">W3C</div>
<div class="tags">ZKP-CL</div>
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