Thinking about opportunities for FROST and nostr integration.
1. It should be easy to generate a FROST key with a bunch of people on nostr. But this creates a new thing for everyone to back up (the key share).
2. Maybe we can avoid this with the recovery feature of the FROST keygen WIP BIP. Basically you have your share encrypted to a (smallish) encrypted blob in a nostr note so just with your nostr nsec it should be possible to recover it. Maybe there is some way to pay relays to keep a note into the future.
3. Apart from keygen nostr relays might be used to broadcast signature requests to notify people with other keys that there's something to do. Even an encrypted chatroom among share holders.
4. I'm not sure how this fits in with frostsnap. Frostsnaps could have their own npubs for keygen but I don't really want to back them up. So I think you'll be forced to write down your share backup as usual.
5. It would be good if signing was still one round so I guess presharing nonces would be done via nostr too.