Kvitant : A shared record for private secondhand sales in Poland

Hi Product Hunt! I’m building Kvitant for private secondhand sales in Poland. A sale of a used phone, bike, or camera often leaves its history scattered across a listing, chat messages, photos, and verbal agreements. When the buyer and seller remember something differently, neither has a clear shared record. Kvitant guides both sides through documenting the item and its disclosed defects, agreeing on a version of the terms, and recording their own declarations about payment and handover. It creates documentation of the transaction without claiming to verify the people involved or guarantee its outcome. I’m starting with Poland and a focused use case: higher value sales between private individuals outside a marketplace’s protected checkout. I’d welcome feedback from buyers and sellers on the workflow, and from people building marketplaces or investing in consumer commerce on where a shared transaction record could be most useful.