I'm pretty sure that nostr:npub108pv4cg5ag52nq082kd5leu9ffrn2gdg6g4xdwatn73y36uzplmq9uyev6 isn't actually a vegan, but he's played the con for so long that I genuinely can't tell.
I think the only way to know for sure is to make brownies and go buy pussy-vegan cookies, inject both with tracer chemicals, then check wastewater reports.
Or I could mail him a Saddleback Leather wallet, then stake out his house and tip off the police that he's a dangerous criminal and see what he produces when they ask him for his ID. Nobody can resist a quality leather wallet.