Encrypted group chat on nostr is being solved three different ways. We compared Marmot (MLS for small high-stakes groups, no privileged server), Concord (Discord-style communities with shared-key streams and signed rosters, five established clients), and Cordn (MLS through a lightweight self-hostable coordinator that is blind to content, identities, and IPs, with nothing identifiable as Cordn messaging persisting on public relays). Full breakdown with a comparison table, what the coordinator can and cannot see, and which to pick:

Nostr Dev

Encrypted Group Chat on Nostr: Marmot, Concord, and Cordn Compared — Nostr Dev

Three protocols, three philosophies. Marmot brings MLS ratcheting to small high-stakes groups with no privileged server, Concord trades ratchets fo...

Come find us in the Nostr Booth at @BTC Prague - we're sponsoring alongside @Angor, @nosfabrica and @Shadrach Ready to discuss any projects, initiatives, or other resourcing needs you may have.

We're super happy to have engaged a client recently who is committed to contributing to the space, as well as building their own product. Noticing that many NIP-05 domains have malformed JSON, we were commissioned to build a couple of tools that will both validate a NIP05 domain and perform a lookup on a NIP-05 address. You can install with `npm i -g @nostrbox/cli` And run the commands: - nip05lookup _@nostrdev.com - nip05check nostrdev.com (we'll leave the errors in for now, so you can see the results) The same facility can be found on https://nostr.box Happy NIP-05 validating!