WhatsApp is where you talk. kwataverse is where you get paid.
Show the code
https://kwataverse.com/p/naddr1qqxxxunp09nxjumg943h2uqzyqax9893qgxrjyuveq86lhhzjekr7jswectyuag6h4enx23qnwlqwqcyqqq8dss9c4hlt
Point a camera at it. A neighbour across a stall can too.