Now this is cool. Ticket purchases via Nostr backed markets. (Not sure how this will display to those not using Amethyst, but you can buy a ticket to a concert via Nostr).

nostr:naddr1qqjrsdrzvcunjdnx94snxvrr956rxe33943rydnz94skzvnxvgmnzve3vcckzq3q9r9qrxmckj2vyk5a5ttyt966s5qu06vmzyczuh97wj8wtyluktxqxpqqqpmvyw43z7a