There is no backend. It's all nostr based. Website can travel via telegram without server. It gets opeened, connection with Internet and pulls data from relays with the state of products, market offers.
Its p2p with some magic tech to update the states of the deal.
For p2p btc trading it's more about wot algo for trust management, advertise - > find buyer, meet up, transfer, or online in the future will be possible in atomic swap too.
