- From: Shigeya Suzuki <shigeya@wide.ad.jp>
- Date: Thu, 12 Feb 2026 16:35:44 +0900
- To: "W3C Credentials CG" <public-credentials@w3.org>
Hi CCG folks, CTC techno solutions and Keio University have been pursuing a joint research project, “Trust Knots” [1], and as part of the activity, professionals at CTC techno solutions and my students at Keio University jointly developed a new Verifiable Credentials software stack, “VCKnots” [2], and now it is available at GitHub. VCKnots is an open-source library for building Verifiable Credentials ecosystems. It implements OID4VCI (OpenID for Verifiable Credential Issuance) and OID4VP (OpenID for Verifiable Presentations), with core wallet functionalities for identifier and key management. The framework supports pluggable extensions for data serialization formats, protocol flavors, and cryptographic algorithms. Key Features: * OID4VCI and OID4VP implementations * Core wallet functionalities (identifier and key management) * Pluggable architecture (extensible formats, protocols, and algorithms) This is the basis software for “MedalBook,” which some students demonstrated at IIW last April. [1] https://www.ctc-g.co.jp/company/release/20240802-01772.html (Japanese only) [2] https://www.ctc-g.co.jp/en/company/release/20260127-02032.html [3] https://github.com/trustknots/vcknots/blob/main/README.md Looking forward to receiving feedback! Shigeya Suzuki, Ph.D Project Professor Graduate School of Media and Governance Keio University
Received on Thursday, 12 February 2026 07:36:18 UTC