OpenID4VCI Just Got a Major Upgrade! Here's What You Need to Know

• Proof Types Reorganized: The proof types section (jwt, di_vp, attestation) has been moved to an appendix for better readability and clarity.
• Appendix Renaming: The IANA Considerations section has been renamed from Appendix F to Appendix G, with all subsections updated accordingly.
• Use Case References Updated: All references to use cases in Appendix G have been updated to Appendix H to reflect the reorganization.
• New Proof Type Introduction: Added a new proof type section in Appendix F, detailing jwt, di_vp, and attestation proofs with clearer definitions and examples.
• Document History Update: Added a note about moving the proof type section to the annex for readability and fixing text in Section 8.1.

OpenID for Verifiable Credential Issuance (OpenID4VCI) is an OAuth 2.0 extension that standardizes the secure issuance of Verifiable Credentials (VCs), such as W3C VCs and mobile driver's licenses (mDLs). It bridges OAuth 2.0 and decentralized identity ecosystems, enabling secure, user-centric credential issuance. The framework supports multiple credential formats, issuance flows, and robust security features like TLS encryption, PKCE, and DPoP. This update refines the proof types section and reorganizes appendices for better usability.