Why Nostr? What is Njump?
The open source - worldwide - permission free - contactless payment card.

Bitcoin payments over the lightning network with NFC.
Public Key
npub1mayqdaq0sd5f4uexa6aky3agr982vhqs3rw7qwm6yr9h5zetdg4q4shl50
NIP-05 Address
_@boltcard.org
NIP-57 Address
boltcard@geyser.fund
Profile Code
nprofile1qqsd7jqx7s8cx6y67vnwawmzg75pjn4xtsgg3h0q8dazpjm6pv4k52s96xwkc
Author Public Key
npub1mayqdaq0sd5f4uexa6aky3agr982vhqs3rw7qwm6yr9h5zetdg4q4shl50