Dorsey unveils Bitchat messaging app in fresh bid to challenge Big Tech
Jack Dorsey launches BitChat, a decentralized Bluetooth-based messaging app
Twitter co-founder Jack Dorsey has introduced BitChat, a decentralized messaging app that works without the internet.
Announced on July 7, BitChat operates over Bluetooth Low Energy mesh networks, enabling nearby devices to connect and form self-sustaining communication paths without relying on servers or cellular networks, reports Crypto News.
Each device acts both as a sender and a relay, allowing messages to move across the network efficiently. This structure is particularly useful in situations like protests, censorship-heavy environments, or natural disasters where internet access may be limited or completely unavailable. Dorsey explained that the app started as a weekend experiment to test protocols like encrypted relays and decentralized store-and-forward mechanisms. BitChat represents his latest effort to build privacy-focused, censorship-resistant communication platforms.
BitChat emphasizes privacy and advanced encryption
One of BitChat’s standout features is its privacy-first approach, where messages are temporary and not permanently stored. By default, messages self-delete after they are delivered or after a pre-set time, reducing the risk of long-term data exposure. The app uses X25519 key exchange to securely transfer encryption keys between devices, ensuring that only the intended recipient can read the message.
It further secures content with AES-256-GCM encryption, a trusted algorithm widely used for its speed and security. For group chats, BitChat provides password-protected rooms where keys are generated using Argon2id, a memory-hard algorithm that effectively defends against brute-force attacks. Dorsey highlighted that BitChat’s design is intended to offer safe, resilient communication without centralized servers or corporate gatekeepers.
BitChat is open-source and still in experimental phase
BitChat is currently in open beta and available through Apple TestFlight, with its source code fully accessible on GitHub for developers and privacy advocates to review. The app includes a “store and forward” system that temporarily saves messages for offline users and ensures their delivery once those users reconnect. Dorsey emphasized that BitChat is still an experimental project and welcomes feedback to improve its functionality and security.
The launch of BitChat follows Dorsey’s consistent push for decentralized platforms, as seen in his support for Nostr and his departure from Bluesky’s board in 2024. Through BitChat, Dorsey appears to be doubling down on his belief in open, censorship-resistant communication tools. His latest project reflects a deep commitment to building systems that empower users to communicate freely and privately outside of centralized tech ecosystems.
Recently we wrote that X, formerly Twitter, is making a bold move to expand its capabilities far beyond microblogging by preparing to launch in-app investment and trading tools.
