WhatsApp is where you talk. kwataverse is where you get paid.
Show the code
https://kwataverse.com/p/naddr1qqyrsc3jxajkvwpjqgsqt2lct9lt9a9wp3hghvefz3dpcqur4x950a2uauc8q42w5e6akdqrqsqqqakzxgdgk2
Point a camera at it. A neighbour across a stall can too.