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References

The playground is grounded in the sources below, cited in Harvard (author-date) style. Validate any detail against them; the interactive views are an aid, not a substitute. Links open in a new tab.

Specifications​

OpenID Foundation (2025) OpenID for Verifiable Credential Issuance 1.0. Available at: https://openid.net/specs/openid-4-verifiable-credential-issuance-1_0.html (Accessed: 5 June 2026). Key parts: Appendix D (Key Attestation), Appendix F.1 (proof JWT), Section 8 (proofs), Appendix G (media types).

European Commission (2026) Wallet Unit Attestation. Technical Specification 3 (TS3), version 1.5. EU Digital Identity Wallet. Available at: https://github.com/eu-digital-identity-wallet/eudi-doc-standards-and-technical-specifications/blob/main/docs/technical-specifications/ts3-wallet-unit-attestation.md (Accessed: 5 June 2026). Key clauses: §2.2.2 (KA transport), §2.3.2 (KA content), §2.4.2 (Wallet Provider responsibilities), §2.5.2 (KA revocation).

European Commission (2026) The European Digital Identity Wallet Architecture and Reference Framework, version 2.9.0. Available at: https://eudi.dev/2.9.0/architecture-and-reference-framework-main/ (Accessed: 5 June 2026).

European Commission (2026) Architecture and Reference Framework discussion topics: Topic C, Wallet Unit Attestations. Available at: https://eudi.dev/2.9.0/discussion-topics/c-rr-wallet-unit-attestations/ (Accessed: 5 June 2026).

ETSI (2026) ETSI TS 119 472-3 V1.1.1: Electronic Signatures and Trust Infrastructures (ESI); Profiles for Electronic Attestation of Attributes; Part 3: Profiles for issuance of EAA or PID. Sophia Antipolis: European Telecommunications Standards Institute. Available at: https://www.etsi.org/deliver/etsi_ts/119400_119499/11947203/01.01.01_60/ts_11947203v010101p.pdf (Accessed: 5 June 2026).

European Parliament and Council of the European Union (2024) Regulation (EU) 2024/1183 amending Regulation (EU) No 910/2014 as regards establishing the European Digital Identity Framework (eIDAS 2.0). Available at: https://eur-lex.europa.eu/eli/reg/2024/1183/oj (Accessed: 5 June 2026).

Jones, M., Bradley, J. and Tschofenig, H. (2016) Proof-of-Possession Key Semantics for JSON Web Tokens (JWTs). RFC 7800. RFC Editor. Available at: https://www.rfc-editor.org/rfc/rfc7800 (Accessed: 5 June 2026).

Jones, M. (2015) JSON Web Key (JWK). RFC 7517. RFC Editor. Available at: https://www.rfc-editor.org/rfc/rfc7517 (Accessed: 5 June 2026).

Jones, M., Bradley, J. and Sakimura, N. (2015) JSON Web Token (JWT). RFC 7519. RFC Editor. Available at: https://www.rfc-editor.org/rfc/rfc7519 (Accessed: 5 June 2026).

ISO/IEC (2022) Information security, cybersecurity and privacy protection: Evaluation criteria for IT security: Methodology for IT security evaluation. ISO/IEC 18045:2022. Geneva: International Organization for Standardization. Available at: https://www.iso.org/standard/72889.html (Accessed: 5 June 2026).

Looker, T., Bastian, P. and Bormann, C. (2026) Token Status List (TSL). Internet-Draft draft-ietf-oauth-status-list. Internet Engineering Task Force. Available at: https://datatracker.ietf.org/doc/draft-ietf-oauth-status-list/ (Accessed: 5 June 2026).

European Telecommunications Standards Institute (2025) ETSI TS 119 612 V2.4.1: Electronic Signatures and Trust Infrastructures (ESI); Trusted Lists. Sophia Antipolis: ETSI. Available at: https://www.etsi.org/deliver/etsi_ts/119600_119699/119612/02.04.01_60/ts_119612v020401p.pdf (Accessed: 5 June 2026).

Notes​

  • The certificates used in the playground are self-signed samples (subject O=iGrant.io) and are not trust anchors.
  • Keys are generated in the browser on each visit; tokens are signed with ES256 so they decode and verify against the embedded keys.
  • The key-attestation+jwt vs keyattestation+jwt media-type difference between OpenID4VCI and TS3 v1.5 is a known divergence worth tracking for interoperability.