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ConcordProtocol

Private communities. Open protocol.

CLIENTS

Vector

by Vector Privacy

Private messaging with no phone number and no email. Concord started here.

Stores

Downloads

Download Vector

Armada

by Soapbox

Everything you use Discord for, from voice rooms to roles, with nobody in the middle.

Stores

Downloads

Open Armada
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SPECS

  1. CORD-01Private StreamsA shared-key stream of giftwraps, readable by anyone holding the key, invisible to everyone else.
  2. CORD-02CommunitiesMembership, authority, epochs, and the Control, Chat, and Guestbook planes.
  3. CORD-03ChannelsPublic and Private rooms, each its own sealed plane with its own key.
  4. CORD-04RolesRanked, owner-rooted permissions validated by every client and enforced by rejection.
  5. CORD-05InvitesRevocable links whose keys live in an encrypted bundle, plus direct invites to an npub.
  6. CORD-06Rekeys & RefoundingsRotate a channel key to sever a removed member, or re-found the Community at a new epoch.
  7. CORD-07Audio/VideoCalls in any channel through a blind broker and an SFU that only forwards ciphertext.
  8. CORD-08Disappearing MessagesOne staff-set timer per Community, expiring every channel’s messages via NIP-40.
The full specification →

THE IDEA

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  • relay.dreamith.to
  • relay.ditto.pub
  • jskitty.com/nostr
  • asia.vectorapp.io/nostr
  • 1000+ morecount them →
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Concord encrypts every message on your device, then scatters it across Nostr relays that cannot read a word.