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StarkWare Researcher Executes First Quantum-Safe Bitcoin Transaction on Mainnet StarkWare researcher Avihu Levy’s Quantum-Safe Bitcoin (QSB) scheme has completed its first confirmed transaction on the Bitcoin mainnet, demonstrating a way to protect transactions from Shor-algorithm attacks without a soft fork or changes to Bitcoin’s consensus rules. QSB shifts transaction security away from elliptic-curve cryptography toward hash-based assumptions, though it remains experimental, requires roughly $75–$150 in off-chain GPU computation per transaction.

3:44 AM · Aug 27, 2026 · 16K Views

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Wu Blockchain @WuBlockchain · Aug 27 556K A

Source: starkware.co/blog/the-first-qu…

Fizen @fizenapp · Aug 27 89K D

@WuBlockchain Hash-based signatures could outlive ECDSA as the post-quantum baseline.

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高返70 Bitget·Visa卡免费 @khaaaann · Aug 27

@WuBlockchain This technology is truly amazing; it feels like we're one step closer to the future.

original · zh

@WuBlockchain 这技术确实厉害了感觉离未来又近了一步

Macro Bombastic @MacroBombastic · Aug 27 11K D

@WuBlockchain interesting but the compute cost makes it tough to scale

BitcoinWorld Media @ItsBitcoinWorld · Aug 27 18K D

Confirmed. First QSB tx mined on Bitcoin mainnet yesterday (txid 305a24ffea912b9cf428f29ebf952321c96dab5bab284fc0d0801562f5abab07). Hash-based lock + signature grinding, no consensus change needed. Still experimental, costly off-chain compute, and only protects specific outputs. Soft fork remains the preferred long-term path. Sources: starkware.co/blog/the-first-qu… mempool.space/tx/305a24ffea912…