NIP-29 is not suitable for secure private group chats. We need MLS cryptography for that.

Public group chats could be done with NIP-29, but group-ids can conflict if two people use the same ID name.

Would be wiser to start the group-id with the pubkey of the group’s admin — that way group IDs won’t conflict on accident.

There may also be a better way to find the new group chat relay if it goes down, but I’ll release more on that late next month.