Gulf Insider
In a paper published on April 9, Avihu Levy of StarkWare outlined “Quantum-Safe Bitcoin Transactions Without Softforks,” introducing a scheme called Quantum Safe Bitcoin, or QSB. The design aims to protect transactions from threats posed by quantum computers while remaining compatible with the existing Bitcoin protocol. The proposal targets a known vulnerability in Bitcoin’s current design. Standard transactions rely on ECDSA signatures over the secp256k1 curve. In theory, a sufficiently powerful quantum computer running Shor’s algorithm could potentially break this system by solving discrete logarithms, which would allow attackers to forge signatures and spend funds. QSB replaces reliance on elliptic curve security with hash-based assumptions. Instead of trusting ECDSA, the scheme uses it as a verification mechanism while shifting security to hash pre-image resistance. This approach draws from earlier work known as Binohash, which embeds one-time signature schemes into Bitcoin Script. JUST IN: Bitcoin developer Avihu Levy introduces "Quantum-Safe Bitcoin Transactions Without Softforks" pic.twitter.com/enghEoOq10 — Bitcoin Magazine (@BitcoinMagazine) April 9, 2026 At the core of QSB is a “hash-to-signature” puzzle. The system hashes a transaction-derived public key using RIPEMD-160 and treats the output as a candidate ECDSA signature. Only a small fraction of random hashes meet the strict formatting rules required for valid signatures, creating a proof-of-work […]
Go to News Site