oid4vp-format-w3c-vc

To implement W3C Verifiable Credentials in OpenID4VP, you use specific credential format parameters like `type_values` for credential matching and construct a `Credential Query` to request presentations. This ensures interoperability and correct data handling during the presentation exchange.

Claims matching for W3C VCs uses a `claims_path` parameter to select specific data within the credential. This allows verifiers to pinpoint exact claims needed from a W3C Verifiable Credential, such as extracting a degree from a UniversityDegreeCredential during an OpenID4VP request.

OpenID4VP supports both JWT-signed VCs and JSON-LD (LDP) VCs. The framework provides detailed specifications for handling the respective metadata, presentation requests, and response structures required for each distinct Verifiable Presentation format.

The best way to request a specific W3C Verifiable Credential type is by constructing a `Credential Query` using `type_values` for credential matching. You then interpret the `Presentation Response` structure to securely process the returned credential data.

You need to use credential format parameters in a presentation exchange when a verifier requests a specific type of W3C Verifiable Credential. Parameters like `type_values` and `claims_path` ensure the correct credential and claims are matched and retrieved from the holder.