What do I need to do to get a "BCH payment receipt" "kind type", similar to kind 9735 "zap receipt"? Assuming I need to demonstrate working code and/or write a complete NIP first, any suggestions on what "kind" to use while testing?

So I'm thinking of doing the unspeakable. Adding support for layer 1 zapping to Nostr using BCH. Hate me gently.

So what's the state of the art for testing PWAs using websockets on iOS devices on a local network these days, preferrably something with automated certificate generation (assuming wss is required)? Or should I still proxy everything from a live public server (with valid certs)?