Speak FreelyForever
The first zk-SNARKs blockchain messenger — AES-256-GCM encrypted, metadata-shielded on BitcoinZ, and designed for censorship-resistant communication.
Why Ztext?
Built from the ground up for one purpose: unstoppable, private communication.
NO CENTRALIZED SERVERS
Messages route through decentralized BitcoinZ nodes. No company can read, store, or delete your messages. No central point of failure.
NO PHONE NUMBER
Your identity comes from your wallet seed. No SIM card, no phone number, no tracking. True anonymity.
IP PROTECTED
zk-SNARKs hide sender and receiver. Your IP is never exposed to the other party. No VPN or Tor needed.
100% DECENTRALIZED
Not built on centralized servers. Ztext runs entirely on the BitcoinZ blockchain — no one controls it, no one can break it, no one can censor it.
BLOCKCHAIN STORED
Messages live forever on the blockchain. Restore from any device with just 24 words. Your data is truly yours.
AES-256-GCM ENCRYPTION
Two layers protect each message: AES-256-GCM authenticated encryption on your device, plus Sapling-family shielded transactions on BitcoinZ.
QUANTUM-RESISTANT DESIGN
Z-Text avoids persistent public-key exposure for shielded identities and uses AES-256 payload encryption, commonly modeled as Grover-safe at roughly 128-bit effective security. This reduces known quantum attack surfaces without promising absolute post-quantum certainty.
SPAM RESISTANT
Your Z-address is never published, indexed, or sold — only you decide who sees it. Messaging requires a mutual cryptographic handshake before a single byte flows. Each message costs ~$0.00003 on-chain — invisible to you, expensive for bots to scale. No moderators. No algorithms. The protocol itself is the gatekeeper.
PANIC MODE
A dedicated emergency PIN instantly wipes keys, messages, and contacts. Stealth mode re-skins the app so it never looks like a messenger. Designed for when privacy is life or death — not a feature, a safeguard.
ONCHAIN VAULT
No signup. No email. No cloud sync. Your credentials never leave your device. AES-256-GCM encrypted and derived from your wallet seed — no company holds the keys. Restore on any device with your 24-word mnemonic. One seed, total sovereignty.
About the Protocol
Z-Text, BitcoinZ, and zk-SNARKs
Z-Text is the messenger client and application-layer protocol. BitcoinZ is the base blockchain network used for shielded transaction delivery and settlement. zk-SNARKs are the zero-knowledge proof system used by shielded transactions to hide transaction metadata. Z-Text is not a separate layer-2 chain: it writes encrypted message payloads through the BitcoinZ shielded transaction layer.
Technical Specifications
Product type
Privacy messenger application
Z-Text client and messaging protocol
Base network
Layer-1 blockchain settlement
BitcoinZ blockchain
Privacy layer
Sender, receiver, and amount shielding
Sapling-family shielded transactions using zk-SNARK proofs
Payload encryption
Local end-to-end message encryption
AES-256-GCM authenticated encryption before broadcast
Key exchange
Recipient-only decryption
X25519 contact key exchange
Identity model
No phone number or email identity
Shielded z-address generated from the wallet seed
Message delivery
Near-real-time encrypted delivery
G-stream mempool push, typically 1–5 seconds before block settlement
Message network fee
Economic spam resistance
Approximately $0.00003 per on-chain message at current BTCZ fee assumptions
Storage model
No central message database
Encrypted payloads settle on the BitcoinZ blockchain
Recovery model
Self-custodial recovery
24-word seed phrase rescans wallet, messages, contacts, and vault data
Why Not Signal/Telegram/WhatsApp?
Great apps, but they rely on centralized infrastructure. We identified 15 privacy failure points and measured 10 points of centralization — here's how each network compares.
15 Privacy Failure Points
| Privacy Failure Point | Ztext | Signal | Telegram | Session | |
|---|---|---|---|---|---|
| IP never exposed (no VPN needed) | |||||
| End-to-end encrypted by default | |||||
| No phone number required | |||||
| Truly decentralized | |||||
| No metadata collection | |||||
| Messages stored forever | |||||
| Recover ALL data from seed | |||||
| Integrated crypto wallet | |||||
| Economic spam prevention | |||||
| Censorship resistant | |||||
| zk-SNARKs privacy | |||||
| Perfect Forward Secrecy | |||||
| No separate token required | |||||
| Open source | |||||
| Quantum-resistant design | |||||
| Total privacy | 100% | 37% | 3% | 23% | 47% |
10 Points of Centralization
| Component | Ztext | Signal | Telegram | Session | |
|---|---|---|---|---|---|
| Message routing | DecentralizedBlockchain | CentralizedCentral servers | CentralizedCentral servers | CentralizedMeta servers | DecentralizedService nodes |
| User identity | DecentralizedSeed phrase | CentralizedPhone number | CentralizedPhone number | CentralizedPhone number | DecentralizedSession ID |
| Key management | DecentralizedLocal only | PartialSVR enclaves | CentralizedServer-held | PartialBackup keys | DecentralizedLocal only |
| Message storage | DecentralizedOn-chain | CentralizedServer queues | CentralizedCloud stored | CentralizedServer queues | PartialSwarm nodes |
| Network discovery | DecentralizedP2P nodes | CentralizedCentral directory | CentralizedCentral directory | CentralizedCentral directory | DecentralizedDHT lookup |
| Push notifications | DecentralizedNot needed | CentralizedGoogle/Apple | CentralizedGoogle/Apple | CentralizedGoogle/Apple | CentralizedGoogle/Apple |
| Software updates | DecentralizedManual/F-Droid | PartialApp stores | PartialApp stores | CentralizedApp stores only | PartialApp stores |
| DNS / domain | DecentralizedNo domain needed | Centralizedsignal.org | Centralizedtelegram.org | Centralizedwhatsapp.com | DecentralizedNo domain needed |
| Payment / funding | DecentralizedCrypto native | PartialDonations | PartialAds + premium | CentralizedMeta funded | DecentralizedToken funded |
| Metadata protection | Decentralizedzk-SNARKs | CentralizedSealed sender partial | CentralizedNone | CentralizedCollected by Meta | DecentralizedOnion routing |
| Total centralized | 0% | 85% | 95% | 100% | 30% |
The trade-off — Z-Text is text-only — no files, pictures, or videos. Pure encrypted text. Only real secrets.
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