If you only have one minute to learn about Keychat, take a look at this 50-word introduction.
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.