I don’t think nostr:npub1h2qfjpnxau9k7ja9qkf50043xfpfy8j5v60xsqryef64y44puwnq28w8ch has a sign/verify function at the moment. Maybe nostr:npub12ekpvme6m2cv37a9mgq4kzemej8tx6ttg40j582rh77ewpvkg65qj8tq0f can let us know if that’s something on the roadmap. 🤙
But yeah, I generated a new wallet in Blue Wallet just for signing. I don’t intend to receive anything there if that makes sense.