WhatsApp is where you talk. kwataverse is where you get paid.
Show the code
https://kwataverse.com/p/naddr1qqyxvcfjv3nrwwfnqgsrt8clrk2huzx2mwjzrsh7wmrtwysz5lpud9ll9ex0hywh4gn3ulcrqsqqqakzucrtf7
Point a camera at it. A neighbour across a stall can too.