nostr:nprofile1qqsdymmcuk25z9a4cefc5ttv3z3zjmr9cqu8wque6urf49uzd6cx49gppemhxue69uhkummn9ekx7mp0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qgmwaehxw309ahx7um5wghx7unpdenk2urfd3kzuer9wchsm634v2 may be talking about the new NIP-60 nut wallet and NIP-61 nut zaps. 0xchat doesn't support those yet but they've already stated they'd support them. If we're just talking cashu support them 0xchat is probably the first client though.  

 Ah, so essentially cashu ecash unlocked by our nostr keys, got it.