End-to-end encrypted messaging with wallet-derived keys. Own your identity with NFT usernames and communicate securely across all your devices.
Discover the powerful features that make BlockStar Cypher the ultimate choice for secure, decentralized communication.
Every message is encrypted with AES-256-GCM using ECDH key exchange. Only you and your recipient can read your messages.
Your encryption keys are derived from your wallet signature. Same wallet = same keys on any device. No backup needed.
Own your identity with BlockStar Domains NFT. Your @username is stored on-chain, giving you true ownership.
Crystal-clear HD voice and video calls powered by WebRTC. Peer-to-peer connections for maximum privacy.
Share images, videos, documents, and audio files up to 10MB. All files are encrypted before transmission.
Express yourself with a full emoji picker and message reactions. Make your conversations more engaging.
Know when your messages are delivered and read. Single check for delivered, double check for seen.
Access your messages on any device. Your wallet-derived keys ensure seamless decryption everywhere.
Create group conversations with multiple participants. Perfect for teams, communities, and DAOs.
Never miss a message with instant push notifications. Stay connected even when the app is closed.
Communicate without internet using Bluetooth and WiFi Direct. Perfect for events or emergencies.
Built on BlockStar Mainnet with cross-chain compatibility. Connect across different networks.
See how BlockStar Cypher stacks up against traditional messaging apps.
| Feature |
|
WhatsApp
|
Telegram
|
Signal
|
Discord
|
|---|---|---|---|---|---|
| End-to-End Encryption | Optional | ||||
| No Phone Number Required | |||||
| Decentralized Identity | |||||
| Own Your Username (NFT) | |||||
| Zero Server Data Storage | Minimal | ||||
| Cross-Device Key Sync | Limited | Complex | |||
| No Corporate Ownership | Meta | ||||
| Blockchain Integration | TON Only | ||||
| Mesh Networking (Offline) | |||||
| Open Source | Client Only | ||||
| Censorship Resistant | Partial |
Here's why privacy-conscious users are switching to BlockStar Cypher.
Unlike WhatsApp, Signal, and Telegram that require your phone number, BlockStar Cypher only needs your wallet. No SIM swapping attacks, no phone number leaks, no connection to your real-world identity.
Your @username isn't rented from a corporation - it's an NFT you own on the blockchain. No one can take it away, ban you, or revoke your identity. You can even sell or transfer it.
Encryption keys are derived from your wallet signature - not stored on our servers. If our servers were compromised, attackers would get nothing useful.
Our mesh networking feature lets you communicate via Bluetooth and WiFi Direct when there's no internet. Perfect for festivals, protests, natural disasters, or anywhere coverage fails.
WhatsApp shares data with Facebook. Telegram stores messages on servers. Discord mines your data. BlockStar Cypher is built on open protocols with zero data collection.
Other encrypted messengers make multi-device painful - WhatsApp requires QR codes, Signal needs separate setups. Just connect your wallet on any device and sign. Instant access.
BlockStar Cypher uses state-of-the-art cryptographic protocols to ensure your communications remain private and secure.
Get started with secure messaging on your preferred platform.
Access directly from your browser with full offline support
Launch Web App Install PWAThree simple steps to secure, decentralized messaging.
Connect your blockchain wallet (MetaMask, WalletConnect, or any Web3 wallet) to get started.
Sign a message with your wallet to generate your unique encryption keys. No transaction fees required.
Search for users by wallet address or NFT username and start secure, encrypted conversations.
Join thousands of users who trust BlockStar Cypher for secure, decentralized communication.