$BTC
Yesterday, Jack Dorsey shared the website for a new decentralized messaging app called White Noise. This app differs from Bitchat, which he released for beta testing a few days earlier.
White Noise is built on Nostr—short for “Notes and Other Stuff Transmitted by Relays”—and uses the MLS (Messaging Layer Security) protocol.
Nostr is an open protocol for building decentralized social networks. It’s a transport protocol and the framework for the conversations in each chat. MLS treats messages as authenticated events in a tree-structured key agreement (TreeKEM) instead of using separate pairwise channels.
Both Bitchat and White Noise are decentralized and distributed, but Bitchat relies on Bluetooth Low Energy (BLE) mesh networks while White Noise uses a network of independent relays that anyone can run. Bitchat can operate entirely offline, whereas White Noise depends on internet connectivity.