Bitcoin just got its first live defense against the network’s ultimate doomsday scenario: a quantum computer breaking its cryptography. According to StarkWare, researcher Avihu Levy’s Quantum-Safe Bitcoin method was used to lock and spend coins in a way the company says no quantum computer can open — without changing $BTC itself.

Key Details: > The transaction confirmed in block 964,199 and required no fork and no protocol upgrade. > It runs on Bitcoin’s existing rules; because the format is nonstandard, it was mined via MARA’s Slipstream rather than the public mempool. > Each spend costs roughly $75 to $200 in GPU compute, and the live test landed in the low hundreds of dollars.

This is not the long-term fix. StarkWare still wants a soft fork. But it is the first proof that holders can move coins into quantum-resistant storage today. That matters while more than 6 million $BTC — about 30% of supply — remains quantum-exposed, per Glassnode. StarkWare: First Quantum-Safe Bitcoin Transaction Mined — No Fork Required Do you think this is a real lifeboat, or just a expensive demo until Bitcoin actually upgrades?

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