DCQLClaimsPathPointer

OpenID4VP 1.0, 7. Claims Path Pointer

A claims path pointer is a pointer into the Credential, identifying one or more claims. A claims path pointer MUST be a non-empty array of strings, nulls and non-negative integers. A claims path pointer can be processed, which means it is applied to a Credential. The results of processing are the referenced claims.

OpenID4VP 1.0, 7.1. Semantics for JSON-based credentials

This section defines the semantics of a claims path pointer when applied to a JSON-based Credential.

A string value indicates that the respective key is to be selected, a null value indicates that all elements of the currently selected array(s) are to be selected; and a non-negative integer indicates that the respective index in an array is to be selected. The path is formed as follows:

Start with an empty array and repeat the following until the full path is formed.

To address a particular claim within an object, append the key (claim name) to the array.
To address an element within an array, append the index to the array (as a non-negative, 0-based integer).
To address all elements within an array, append a null value to the array.