no worries, if we wanted to build OPA on Nostr, we would need to create a client (relay?) that has 3 main components

1) completely paywalled

2) pull users' device approx geolocation on every app launch (to show nearby users)

3) users can only communicate with each other via private DM (no feed)

Would this be feasible?

Here's a BTCSESSION tutorial

https://www.youtube.com/watch?v=mrQIyP45UNs&t=2s&ab_channel=BTCSessions