What a long list of posts describing nothing.

OP - if I decide to buy a watch for crypto and I give them your address, how will you know the payment came from me? And how am I or the buyer protected if you control the coin?
Sorry for the long answer. At this time, only popular stablecoins are supported: USDT, USDC.
Your contract, which we publish, must indicate the wallets of the buyer and seller.