A new research proposal claims it can make Bitcoin transactions resistant to quantum attacks without changing the network’s core rules, a goal that has drawn attention as concerns grow over future cryptographic risks.

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…

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