Private messaging, natively on Zcash.
Every message is a shielded ZEC transaction memo. No centralized chat server. No metadata leaks. No sign-up required. Just download the app and experience truly private communication.
Why ZCHAT?
Messages encrypted with zero-knowledge proofs. Only you and your recipient can read them — not us, not anyone.
Zero-Knowledge Privacy
Your messages join millions of shielded notes in an anonymity set so large, even unlimited resources can't distinguish your transactions.
No Sign-Up Required
No phone number. No email. No account. Just pure private messaging powered by Zcash's battle-tested cryptography.
Wallet-First Chat
Get a Unified Address, receive ZEC and messages in one place. Your messages live on the blockchain — decentralized and censorship-resistant.
Perfect Anonymity Set
Every shielded transaction hides among all notes ever created. Privacy strengthens over time as your messages become indistinguishable.
Orchard Protocol
Built on Zcash's latest shielded pool with quantum-ready foundations. Your privacy is protected today and prepared for tomorrow.
Self-Hosted Stack
The infrastructure runs zebrad and lightwalletd — no third-party servers touching your messages. True end-to-end privacy.
How it works
A complete architecture running on Zcash mainnet
Zebrad full node (mainnet)
lightwalletd (gRPC)
Rust wallet-core
Node.js backend + PostgreSQL
Next.js / React frontend
Messages are memos in shielded transactions, ensuring complete privacy. You don't have to run your own full node—we run zebrad and lightwalletd in the backend. You just use the app (web or mobile). The wallet engine talks to lightwalletd for blockchain interaction, while the backend manages state and synchronization. The frontend is a simple, intuitive messenger built on top of real ZEC transactions.
See ZCHAT in action
2-minute demo: sending fully private messages over Zcash mainnet.
Download ZCHAT
Get the most private messenger in the world. No sign-up required. Your messages live on the Zcash blockchain.
Official App Stores
Download on the
App Store
Get it on
Google Play
Official store releases coming in Q1 2026
Early Access (Android APK)
Android APK
Direct download for testers
Join our exclusive whitelist to get early access to ZCHAT. Limited spots available for beta testers.
By joining, you agree to receive updates about ZCHAT
Roadmap
Now
Private beta testing on mainnet. Join the whitelist for early access.
Q1 2026
Public release on Google Play and App Store.
Next
Encrypted images and audio attachments.
Under research
Fully private live calls anchored to Zcash.
Zypherpunk Hackathon Winner
ZCHAT won the Zypherpunk Hackathon in the "Zcash Related Projects" category, proving that truly private messaging is possible. Built on ZEC shielded memos, ZCHAT delivers end-to-end encrypted communication where messages live on the blockchain — no servers, no sign-up, no compromise.
Our focus is making privacy-first communication as simple as any normal messenger. No phone number, no email, no account required — just pure private messaging powered by zero-knowledge cryptography.
Ready to make messaging actually private?
Experience truly private communication powered by Zcash's shielded transactions. No servers. No sign-up. No compromise.
Privacy is necessary for an open society in the electronic age... We cannot expect governments, corporations, or other large, faceless organizations to grant us privacy out of their beneficence... We must defend our own privacy if we expect to have any... Cypherpunks write code.— A Cypherpunk's Manifesto
Get in touch
Questions? Feedback? Let's connect.