When Cashu for event tickets? They already do that on eth with nfts.
Discussion
nostr:nprofile1qyt8wumn8ghj7etyv4hzumn0wd68ytnvv9hxgtcpzemhxue69uhks6tnwshxummnw3ezumrpdejz7qpq2rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sugh36r Talked about this recently I think. It's so obviously do able because the cashu-denominated token exchanged for lightning bitcoin is an arbitrary conversion is my understanding