I was explained that the user who agrees to provide their documents for registration on the exchange does not know the name of the exchange. To do this, you need to take a passport photo and a photo with a passport.
-snip-
Okay, I see what you mean but this might become an issue for the seller. If the seller is not doing the verification himself, how can he trust that the buyer is actually using the documents for an exchange, and not something else which could harm him?
Also, this method may not work with all of the exchanges out there. AFAIK, Some of them do require live selfies or even pictures with you holding a piece of paper with the current date and the exchange's name on it.