Interested in knowing more about how the open source Bolt Card nostr:npub1mayqdaq0sd5f4uexa6aky3agr982vhqs3rw7qwm6yr9h5zetdg4q4shl50 works under the hood?
Then check out my presentation at
BitcoinAlive Sydney in April of this year
https://youtu.be/8icjYDIMNdE