# Proof ### Definition A Proof is any additional document needed to verify or support information provided in the [case](/guides/glossary/case.md). Like a document, a proof has a condition. The proof only becomes part of a case if the condition is true. ### Example Typical examples of proofs are a passport scan, a wealth origin report or a company organisational chart. If e.g. a passport scan is required whenever a client is not Swiss, then the proof 'Passport Scan' would have a condition like this: ``` p is Person p.nationality != che ``` Now every time, there is a person involved in a case who's nationality is not Swiss (che) Atfinity will ask to provide a scan of this person's passport. --- # 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://docs.atfinity.io/guides/glossary/proof.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.