# DVR Data Verification Request (DVR) is the main application in the zkPass framework. It contains a query that serves as the criteria against which user data is verified. Created by the Proof Verifier, DVR Query works as conditional statements applied to relevant fields in the user data. These queries enable the Proof Verifier to validate user information without having the Data Holder expose the user's sensitive content. For a complete definition of the DVR, please follow this [link](/zkpass/zkpass-developers-guide/zkpass-modules/dvr/key-concepts/dvr-info.md). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://gl-docs.gitbook.io/zkpass/zkpass-developers-guide/glossary/dvr.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.