FAQ from Bitchat
What is Bitchat and who created it?
How does Bitchat's mesh network work?
What are Bitchat's security features?
How can I download and install Bitchat?
How does Bitchat optimize battery usage?
What makes Bitchat's protocol efficient?
How does message storage work in Bitchat?
What are Bitchat's main use cases?
Is Bitchat open source and what's the license?
What's Bitchat's current development status?
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FAQ from Bitchat
What is Bitchat?
Bitchat is a revolutionary decentralized peer-to-peer messaging app, reportedly by Jack Dorsey, that operates without internet using Bluetooth mesh networks. It's designed as 'the side-groupchat' for seamless offline communication, requiring no servers or phone numbers. This innovative application uses automatic peer discovery and multi-hop message relay, making it perfect for scenarios where traditional internet-based messaging fails, such as remote areas or emergency situations.
How to use Bitchat?
To use Bitchat, you can either set up the development environment by cloning from GitHub and using XcodeGen (or simply run `just run` for macOS) or download the pre-built iOS app or Android APK. Once launched, set your nickname, and the app will automatically connect to nearby peers via Bluetooth LE mesh. You can join channels using IRC commands like `/j #general`, discover available channels with `/channels`, or start chatting in public local chat. Advanced features include sending private messages with `/m @name message`, protecting channels with `/pass password`, and managing users with `/block @name`. Messages relay through the mesh to reach distant peers.
What is Bitchat and who created it?
Bitchat is a decentralized peer-to-peer messaging app that works over Bluetooth mesh networks. It's described as 'the side-groupchat' - no internet required, no servers, no phone numbers. The project is released into the public domain.
How does Bitchat's mesh network work?
Bitchat uses a binary protocol optimized for Bluetooth LE with TTL-based message routing (max 7 hops). Each device acts as both client and peripheral with automatic peer discovery, message fragmentation, and deduplication via unique IDs.
What are Bitchat's security features?
Bitchat uses X25519 key exchange + AES-256-GCM for private messages, Argon2id + AES-256-GCM for channels, Ed25519 signatures, forward secrecy, cover traffic, and emergency wipe. Warning: Private features haven't been externally reviewed.
How can I download and install Bitchat?
Bitchat is available for iOS (via direct download link) and Android (APK v1.1.6). Native support for iOS 16.0+ and macOS 13.0+. Android version offers full protocol compatibility with cross-platform messaging capabilities.
How does Bitchat optimize battery usage?
Bitchat features 5-tier adaptive power management: Performance mode (>60% battery), Balanced (30-60%), Power saver (<30%), Ultra-low power (<10%), plus background efficiency with configurable scanning duty cycles.
What makes Bitchat's protocol efficient?
Bitchat uses LZ4 compression (30-70% bandwidth savings), optimized Bloom filters for duplicate detection, message aggregation, adaptive connection limits, and a compact binary protocol with 1-byte type fields.
How does message storage work in Bitchat?
Messages are ephemeral by default (exist only in device memory). Channel owners can enable optional message retention with /save. Store-and-forward caches messages for offline peers with automatic delivery on reconnection.
What are Bitchat's main use cases?
Bitchat is ideal for areas with poor internet connectivity, during network outages, in censorship scenarios, protests, emergency situations, or any time you need reliable offline communication.
Is Bitchat open source and what's the license?
Yes, Bitchat is completely open source and released into the public domain. This allows unlimited use, modification, and distribution. The code is available on GitHub for transparency and community contributions.
What's Bitchat's current development status?
Bitchat is a work in progress with public local chat fully functional and secure. Private messaging and channel features are implemented but haven't received external security review. It's designed as a platform-agnostic protocol for future expansion.