What is the best way for the user to confirm the fact of legal ownership?

Question

Web development

On the catalog site, it is possible to register as the owner of an object from this catalog, but you must confirm the ownership of this object. The option "ask the user to attach documents/scans, etc." doesn't seem to be the most convenient.
Is there any other way to verify legal ownership?

Answer 1

Well, you do not have the right to demand to show title documents (scans), but you can ask them to add them if they wish. And if such a person added them, then make an inscription near his object - the owner, or something like that, and who did not add, then vice versa - not the owner. Well, I think you get the point.