"The QR code contains encrypted content, price, LN address with cryptographic signature. No database needed."

Pretty neat hm?

nostr:nevent1qqs90kp3rtcn7ujds4300xe04wfhl03psl4g688fqmwm2kg8j9lvqzspz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsygxx7urh795e65x0j25k22l7hlavqh7xss4eacu3pzwetxu26h2gl5mrt4x8