nostr:note12d9s78aduk543vwmyklrcmps584vmt6th56msw0a39gh0n2hxqmse5chv3 Great spec, it hides all the metadata, suitable for DMs and small groups(1-10 members). However, for large groups, perhaps we need to strike a balance between privacy and performance.

I am trying to find a solution for forward/backward privacy protection, rapid replacement of shared private keys, and group chat management.