The nostr:npub1arcweuxy0zkdcg08sljh058qp02ytrgnpzh4csa3ar42szyfgrpsw6ggtw guys with nostr:npub1cd0l3s6qgj0s6690rtkys39mgj5upwxpm4856nhmce0pyqu6xj9qh7xlvx and nostr:npub1ce7d8cdg8k49dnl3da34mvhah8kevxfsq2vdguq6trngapqfsdzsnv3d7m are sending huge zap splits with Cashu afaik.

A single payment is instant, could you just send n payments and that's it? Thinking of nostr:npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft's new invention (notice how I avoid the name nutsack), you could send multiple note events with ecash and you should be good.

Can you explain the use case in more detail?