The phrase in the context of scene releases (like "ANDOR S01E05 German 720p WEBDL") typically refers to a request for proof of identity or affiliation with a specific release group or private tracker .
In the world of online file-sharing and "the scene," this often means: ANDOR S01E05 German 720p WEBDL
A request for the original source material (e.g., a photo of the physical media or a screenshot of the original web source) to verify that the release is legitimate and not a "fake" or "nuked" file. The phrase in the context of scene releases
Private trackers or groups may ask for "paper" (often a photo of a piece of paper with your username written on it next to your physical media or equipment) to vet new members or uploaders. ANDOR S01E05 German 720p WEBDL