Z-TEXT publishes threat model and launches bug bounty for blockchain messenger

By AI, Created 4:06 PM UTC, June 04, 2026, /AGP/ – Z-TEXT LLC published the full threat model for its blockchain-based messenger on June 4, 2026, and launched a 7 ZEC bug bounty as it prepares for public release. The move puts the app’s security claims, limitations, and privacy design in the open for researchers and users.

Why it matters: - Z-TEXT is trying to stand out in a crowded privacy-app market by making its security assumptions public before launch. - The publication of a full threat model gives users and researchers a clearer view of what the messenger protects against, and where it does not. - The bug bounty adds outside scrutiny to an app that stores messages permanently on-chain.

What happened: - Z-TEXT LLC published its threat model and known security limitations on June 4, 2026. - The company also launched a paid bug bounty program with a 7 ZEC reward pool. - The maximum reward for a single critical discovery is up to 3 ZEC. - The threat model and bounty details are available at full security documentation.

The details: - Z-TEXT is a 6-in-1 mobile app that combines a shielded messenger, a password manager and a crypto wallet. - The app uses three privacy layers: zero metadata collection, zk-SNARKs zero-knowledge encryption and post-quantum cryptographic protection. - A single 24-word seed phrase generates and restores the app’s functions. - Z-TEXT does not use a phone number, IP address or central server. - Messages are stored permanently on the BitcoinZ blockchain, with the company describing the cost as $0.00003 per message. - Each message uses two encryption layers: zk-SNARKs shielded transactions on the BitcoinZ blockchain and AES-256-GCM contact key encryption. - Z-TEXT says both layers must be broken to read a message. - The app also implements ML-KEM-768 and ML-DSA-65 post-quantum cryptographic keys. - Z-TEXT is available for Android and iOS. - Z-TEXT LLC is incorporated in Wyoming and is fully self-funded with no venture capital.

Between the lines: - Publishing a threat model is a signal that Z-TEXT wants its security claims evaluated by researchers, not just accepted by users. - Permanent message storage is a major privacy tradeoff, even when the content is encrypted, because the data never disappears from the blockchain. - The app’s design emphasizes minimizing metadata, which can matter as much as message content in privacy tools.

What’s next: - Security researchers can now test the app against the disclosed threat model and submit findings through the bounty program. - Z-TEXT’s public launch will likely hinge on whether outside review confirms its privacy and cryptography claims. - The company’s documentation says the public release is still ahead, making the threat-model disclosure a pre-launch checkpoint rather than a final verdict.

The bottom line: - Z-TEXT is betting that radical transparency about security will help a blockchain messenger win trust before launch.