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Jack Dorsey has open-sourced the Bitchat project, a tool that enables offline communication and Bitcoin transfers without internet, using Bluetooth Mesh networking. It supports multi-hop relay, Cashu eCash offline transfers, and double encryption, suitable for scenarios like network outages and surveillance.
Bitchat is a secure, decentralized peer-to-peer messaging app for Android that works over Bluetooth mesh networks without internet or phone numbers, with end-to-end encryption and cross-platform compatibility with iOS.
BitChat is a decentralized peer-to-peer messaging app that uses Bluetooth mesh networks for offline communication and Nostr protocol for global internet-based messaging, with a focus on privacy, no accounts, and no central servers.