We are running a version of keycast at login.divine.video. I don’t think custodial keys are something most nostr users would like to use. And I think it’s vital that any nostr app works with non-custodial keys. The goal is to make it easier to onboard users. Think of it as the bitcoin exchange that bridges to tradfi.

We generate a bunker url so you should be able to use the custodial key to access most nostr apps. And you can take your key and ask the service to delete it. Yeah you’d need to trust the keycast server operator to actually delete it and not use it. But this is the same thing users face in any service that uses traditional non-key based accounts.