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ConcordProtocol

Private communities. Open protocol.

APPS

Vector

by JSKitty

Wrote the first Concord, and the first client for it.

  • Windows
  • macOS
  • Linux
  • Android
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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.