Damus
Keychat profile picture
Keychat
@keychat

Keychat is a chat app, built on Bitcoin ecash, Nostr protocol and Signal protocol. Keychat is inspired by the postal system — stamps, post offices, letters. Keychat uses Bitcoin ecash as stamps and Nostr relays as post offices. Keychat uses Signal protocol to ensure message encryption security and meta-data privacy. https://www.keychat.io/ https://github.com/keychat-io

Relays (4)
  • wss://relay.damus.io – read & write
  • wss://nos.lol – write
  • wss://relay.nostr.band – read & write
  • wss://nostr.wine – read & write

Recent Notes

keychat profile picture
We won’t build paid community tools ourselves.
Instead, we hope someone will create an independent paid community mini web app that can be used within the Keychat browser.
keychat profile picture
You can try swiping right from the left edge of the screen — it’ll take you back to the previous page.
keychat profile picture
We had previously discussed internally that showing the seed phrase directly in Keychat isn’t secure. In the latest version, my colleague took a more conservative approach and chose not to display the seed phrase for new users at all.

Users can still back up all their data, including the seed phrase, from the App Settings. We may re-introduce the option to view the seed phrase in a future release under certain conditions—for example, after PIN verification.
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A super app isn’t an “everything app.” Watch Keychat’s intro video, and you’ll see exactly where it fits best—and why that framing makes sense.

@nevent1qvz...
keychat profile picture
The original Signal protocol operates over a private network; when applied to Nostr, a public network, the privacy issue becomes more pronounced.

Although the eavesdropper cannot decrypt the message's content, if the sender's (or recipient's) address remains unchanged, the eavesdropper can still analyze the identity and other information from the communication frequency, timing, etc.

Address refresh means Alice updates the receiving address when sending a new message. The new address is the DH ratchet's new pubkey. When the new address receives a message from Bob, Alice can ensure Bob receives the new address. Alice should listen to the old addresses for some time to avoid missing messages or delays.
@nevent1qvz...