StarkWare mines first Bitcoin designed to withstand quantum attacks
The company said the breakthrough addresses a potential weakness that could emerge as quantum computing advances.
StarkWare has mined the first quantum-safe Bitcoin, demonstrating a working transaction based on its Quantum-Safe Bitcoin (QSB) method, Starknet said Wednesday.
We had a whitepaper and a dream, it’s now a reality.
🚨 The first quantum-safe Bitcoin has been mined 🚨@StarkWareLtd sent 3.1 BTC using @avihu28's Quantum-Safe Bitcoin method. A spend no quantum computer could forge, under Bitcoin's rules as they exist today. https://t.co/cjuIftzzee
— Starknet (@Starknet) August 26, 2026
The company sent 3.1 BTC using a method developed by Chief Product Officer Avihu Levy, creating a spend that cannot be forged by a quantum computer under Bitcoin’s current rules.
The demonstration marks the transition of QSB from a whitepaper concept to a working implementation. The method is intended to prepare Bitcoin custodians for the potential emergence of sufficiently powerful quantum computers capable of breaking the cryptographic protections used by the network.
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According to StarkWare, the primary risk is not necessarily the theft of large Bitcoin holdings, but paralysis, as a cryptographic break could leave vulnerable coins stranded and unable to be spent.
QSB is designed to give custodians a quantum-safe spending path that can be provisioned under Bitcoin’s existing rules, without requiring a soft fork or waiting for a network upgrade.
STRK climbed about 4.5% to $0.027 after the announcement before retreating from the high.