TESTNET WILL LAUNCH END OF 2025 IN ACTIVE DEVLOPMENT DEVELOPERS ARE WELCOMED
PENDING UPDATE ON LAYER 2 AS OF 9/11/25 ON WHITE PAPER
Quantum Secure Payments, You Control
Qubit Cash is a next-generation digital currency built for speed, security, and real-world use. Using post-quantum cryptography and a resilient proof-of-work blockchain, it delivers near-instant transactions and stable performance, empowering users to transact freely with a fixed supply and no intermediaries.
Robust Proof of Work for Unmatched Security
Qubit Cash’s Proof-of-Work sets a new standard for security and decentralization. SHA3-384’s 48-byte outputs make mining harder than legacy algorithms like SHA-256, reducing ASIC dominance and keeping mining fair. Fixed 150 second blocks and dynamic difficulty ensure stable transactions, while single-round SHA3 PoW avoids older hash vulnerabilities for lasting network integrity.
Fixed Supply & Predictable Emissions
Qubit Cash is capped at 250 billion coins, with rewards fixed at 100 QBH per block and no halving schedule. This steady emission model ensures long-term supply control, providing both scarcity and miner stability. With precise 2.5-minute block intervals and 10-decimal precision, Qubit Cash offers a transparent, sustainable economic design expected to reach full supply over approximately 12,000 years.
Security Features
01
Falcon-512 Signatures
Falcon-512 is a digital signature algorithm based on lattice cryptography, designed to remain secure even against quantum computers. It creates compact, fast-verifying signatures ideal for high-speed transactions. Falcon-512 was selected by the U.S. National Institute of Standards and Technology (NIST) as part of their Post-Quantum Cryptography Standardization Project, recognizing it for its strong security guarantees, efficiency, and resistance to both classical and quantum attacks. By using Falcon-512, Qubit Cash ensures every transaction is protected by a future-proof, standards-backed cryptographic foundation.
02
Deterministic Wallet Recovery
Qubit Cash wallets use a dual-recovery system that requires both a mnemonic phrase and a unique 124-byte salt, making unauthorized access virtually impossible. Seeds are derived using KMAC512 and deterministic Falcon-512 keys — both selected by NIST for their strength against current and future attacks. KMAC512 ensures secure, flexible key derivation, while Falcon-512 is recognized for its efficient, post-quantum-safe digital signatures, enabling reliable wallet recovery with proven, trusted cryptography.
03
Compact, High-Entropy Hashing
Qubit Cash uses SHA3-384 for Proof-of-Work and hashing, producing 48-byte outputs with high entropy that leave no patterns for attackers. This design adds partial resistance to quantum attacks by making algorithms like Grover’s require an impractically large number of operations to find collisions or preimages. SHA3’s modern sponge construction resists advanced cryptanalysis far better than older hashes like SHA-1 or SHA-2, securing transaction IDs, block hashes, and mining integrity against both classical and emerging quantum threats.
04
Cross-Network Attack Protection
Qubit Cash prevents cross-network replay and collision attacks by embedding unique network prefixes directly into wallet address generation. This means addresses on mainnet, testnet, and regnet are cryptographically bound to their specific networks, so transactions or keys can’t be reused or replayed across chains. By tying addresses and UTXOs to a single network, Qubit Cash adds a critical layer of defense against advanced attacks — including those leveraging quantum capabilities to exploit inconsistencies between networks.
Join the Movement — Shape the Future of Qubit Cash
Community Driven
Be part of the Qubit Cash revolution today. Connect with our team and community on Discord, stay updated on social media, and prepare to contribute when the code goes public. Whether you’re a developer, enthusiast, or simply curious, your voice and skills can help shape the future of secure, decentralized digital payments. Don’t just watch — join the movement and make a difference. To learn more and read our detailed reports, head to our Discord and stay informed with the latest insights on Qubit Cash.