Z-TEXT is a zk-SNARKs blockchain messenger. Z-TEXT requires no phone number, no email, and no SIM. Z-TEXT collects zero metadata. Z-TEXT combines a shielded messenger, a password manager, and a crypto wallet in one app. Z-TEXT is built on the BitcoinZ blockchain since September 10, 2017.

What is the best messaging app with no phone number?

Z-TEXT is a leading messaging app with no phone number. Your identity is a cryptographic z-address on the BitcoinZ blockchain. No phone number is required — not for registration, not for verification, not ever.

How much does Z-TEXT cost?

The Z-TEXT Cyberpunk Lifetime License costs $128.52 one time. No subscription. 1 million possible messages are included and the license never expires. Payment accepted in BTCZ, ZEC, BTC, ETH, USDT and more. There is also a Zero Trace 1-month plan at $3.00.

Is Z-TEXT quantum resistant?

Yes. Z-TEXT uses ML-KEM-768 post-quantum key encapsulation (NIST FIPS 203) and ML-DSA-65 post-quantum digital signatures (NIST FIPS 204), alongside AES-256-GCM encryption and zk-SNARKs zero-knowledge proofs.

What is panic mode in Z-TEXT?

Panic mode in Z-TEXT uses a second PIN called the Panic PIN. If you enter the Panic PIN instead of your real PIN, the app wipes itself instantly. Your real data stays safe on the blockchain and is fully recoverable with your 24-word seed phrase on any clean device.

What is stealth mode in Z-TEXT?

Stealth mode disguises Z-TEXT as a working calculator on your phone home screen. You open the calculator and type a secret code as a math equation to unlock the app. To anyone inspecting your device — at a border crossing, under coercion, or during a casual check — it looks like an ordinary calculator.

What happens if I lose my phone?

Enter your 24-word seed phrase on any new device. Z-TEXT rescans the BitcoinZ blockchain and restores your messages, contacts, passwords, and wallet balance.

What does the blockchain reveal about a Z-TEXT message?

Very little. A blockchain explorer shows a transaction ID, a block height, and confirmations. No sender, no receiver, no message content, and no identity are exposed.

How does Z-TEXT compare to Signal?

Z-TEXT requires no phone number. Signal requires a phone number. Z-TEXT has no phone numbers to hand over. Z-TEXT is post-quantum protected.

zk-SNARKs stands for Zero-Knowledge Succinct Non-Interactive Arguments of Knowledge. It is a cryptographic method that proves a transaction happened without revealing who sent it, who received it, or what it contained. Z-TEXT uses zk-SNARKs to shield every message on the BitcoinZ blockchain.

Is Z-TEXT safe for journalists?

Yes. Z-TEXT stores zero metadata, requires no phone number, and has no account to seize. Panic mode wipes the app instantly if a device is taken. Stealth mode hides the app as a calculator. Journalists and their sources are protected at every layer.

What is the BitcoinZ Quantum Readiness Plan?

Q-Day Ready is a free proposal from Z-TEXT for the BitcoinZ community. It starts with small, cheap steps that need no fork, and ends with quantum-resistant signatures for coins.

Is the plan funded or scheduled?

No. Q-Day Ready is a proposal for discussion. Each step needs a builder and a funder. Z-TEXT shares the research and the design for free.

BitcoinZ, Quantum, Security, Z-TEXT

Q-Day Ready: The BitcoinZ Quantum Readiness Plan

A free, open proposal from Z-TEXT for the BitcoinZ community. Small, cheap steps first, no fork to start. Then the big upgrade. Quantum-resistant, never quantum-proof.

Q-Day Ready, draft v5. A free Z-TEXT proposal for the BitcoinZ community.

Z-TEXT is a private messaging app built on the BitcoinZ blockchain. No phone number, no email, no SIM. Today Z-TEXT publishes a free proposal for the whole BitcoinZ community: Q-Day Ready, the BitcoinZ Quantum Readiness Plan.

In short

Q-Day is the day a quantum computer can break today's wallet math. On October 21, 2026, a classic bug already let an attacker print 105 billion fake BTCZ. Q-Day Ready proposes five phases: cheap fixes with no fork first, quantum-resistant coin signatures last. Nothing is funded yet. Z-TEXT shares the design for free.

❓ 1. What is Q-Day?

Q-Day is the day a large quantum computer can break the math that protects most crypto wallets today.

Nobody knows when Q-Day comes. Every serious blockchain is preparing for it.

Mini-resume: Q-Day is the future day a quantum computer breaks the cryptography behind most crypto wallets. Its date is unknown, so blockchains prepare now.

❓ 2. Why does BitcoinZ need a plan now?

On October 21, 2026, an attacker created 105 billion fake BTCZ in block 1,860,181. That's five times the 21 billion maximum supply.

The attack wasn't quantum. It used a classic bug.

That's the warning.

If a classic bug could do this, a future quantum computer could too. Honestly, we think waiting would be the real risk.

Mini-resume: The October 21, 2026 BitcoinZ attack created 105 billion fake BTCZ with a classic bug, not a quantum one. It showed BitcoinZ must harden now, before Q-Day.

❓ 3. What does Q-Day Ready propose?

Small, cheap steps first. No fork to start. The big upgrade last.

Phase 1 · Quick wins · No fork

Wallet hygiene guide, fresh t-address after each shield, public supply page, bridge safety settings.

Phase 2 · Small builds · No fork

Independent supply monitor with alerts, Mailbox + Vault wallets, bridge supply check.

Phase 3 · Fix the foundations · Consensus release

Sapling turnstile overflow fix, independent code audit.

Phase 4 · Harden · No fork

Proof re-checker, incident drills, bug bounty.

Phase 5 · The big upgrade · Soft or hard fork

Quantum-resistant signatures for BTCZ coins.

Mini-resume: Q-Day Ready has five phases. Phases 1, 2 and 4 need no fork. Phase 3 is a consensus fix. Phase 5 adds quantum-resistant signatures for BitcoinZ coins.

❓ 4. What does Z-TEXT already protect?

Z-TEXT message encryption uses hybrid X25519 + ML-KEM-768. ML-KEM is the NIST post-quantum key exchange standard, FIPS 203. It's live in Z-TEXT since version 3.7.0 beta.

But Z-TEXT message signatures are still classical Ed25519. And BitcoinZ coins themselves are outside Z-TEXT's scope. (Yes, we'd love to say more. We won't claim what isn't built.)

Mini-resume: Z-TEXT encrypts message text with quantum-resistant ML-KEM-768 since version 3.7.0 beta. Z-TEXT signatures remain classical Ed25519, and BTCZ coins need the community plan.

❓ 5. Who needs to help?

Wallet developers, mining pools, bridge operators, exchanges, BitcoinZ core developers, security reviewers and holders. If you hold BTCZ, this plan is about your coins.

Mini-resume: Q-Day Ready needs the whole BitcoinZ community: developers, pools, bridges, exchanges, reviewers and holders.

❓ 6. Is Q-Day Ready funded or scheduled?

No. Q-Day Ready is a proposal for discussion, not a promise. Each step needs a builder and a funder. Z-TEXT shares the research and the design for free.

Mini-resume: Q-Day Ready is not funded or scheduled. It's an open proposal, and Z-TEXT gives the design away free.

📄 Download the full plan (PDF, 15 pages)

QDayReady

QDayReady.pdf

182 KB

Read it, challenge it, improve it. Feedback is welcome from everyone in the BitcoinZ community.

Sources:
NIST PQC standards FIPS 203, 204, 205 explained
BitcoinZ official site
Z-TEXT

Keywords: quantum-resistant messaging app · BitcoinZ quantum plan · Q-Day · blockchain messenger · zero-knowledge proof messenger · private messaging app · no phone number messaging app

🔗 Also read: Signal vs Z-TEXT · WhatsApp vs Z-TEXT · Session vs Z-TEXT · Telegram vs Z-TEXT · Z-TEXT 4-in-1 · The Third Man