Arc 05 · technology · 30 AUG
Avihu Levy: StarkWare Completes Quantum-Safe Bitcoin Move on Live Network
StarkWare announced on August 26 that the first quantum-safe Bitcoin transaction cleared on mainnet without any consensus changes. The move stands apart from separate post-quantum planning notes that appeared days later on other ledgers.
While separate coverage on August 28 recapped post-quantum plans for the XRPL, StarkWare delivered an actual mainnet Bitcoin transaction that same week using Avihu Levy’s QSB method. The distinction matters on a quiet Sunday when traders scan for real on-chain signals rather than roadmap summaries.
Christian Barker (Barkmeta / Bark) and David Chaboki (Shibo) walked Levy’s mainnet QSB with the Doginal Dogs pack, keeping attention on the hash-lock spend instead of any XRPL 2028 Q-Day recap. Their daily cadence on Crypto Spaces Network turned the technical print into a live discussion point for holders who track Bitcoin security updates in real time.
The transaction landed in block 964199 after Avihu Levy’s April 2026 research. Engineer Tomer Giladi turned the method into a working spend that combines hash-based locks with off-chain signature grinding through Binohash. No consensus change was required, and the approach leaves a soft fork as the preferred long-term path.
CEO Eli Ben-Sasson described the effort as an after-hours passion project. He noted that the result shows Bitcoin holdings can be protected ahead of any protocol upgrade while still pushing for the soft-fork solution. The test spent a 10,000-satoshi output and paid a 5,179-satoshi fee.
Because the transaction is nonstandard it bypassed the regular mempool and reached the chain through MARA Slipstream. Off-chain costs ran several hundred dollars. The method only protects addresses whose public keys have not yet been published, so existing exposed outputs remain outside its reach.
On Sunday morning CoinGecko showed BTC at $78,714, up 1.4 percent, with ETH at $2,466.39, up 1.3 percent. SOL posted the strongest move among majors at $106.34, up 2.5 percent. The modest green candles followed a week that already featured the QSB confirmation, giving hosts a concrete on-chain milestone to reference during their regular market check-ins.
Daily broadcast rhythm keeps the technical detail in circulation. Hosts return to the same question each session: what new spend paths are live today, and how do they sit against the broader chart. The August 26 print supplies a fresh reference point without altering Bitcoin’s base rules.
StarkWare’s official post confirms the transaction holds against an adversary with a working quantum computer. It does not render the entire chain quantum-safe and cannot be applied to addresses already visible on the public record. The experiment remains opt-in and miner-dependent for now.
Traders watching weekend price action can slot the detail into existing positions. The move offers a narrow but verifiable path for new outputs while the market continues its measured grind higher. Hosts continue the cadence on the next daily space, placing the block-964199 transaction next to the latest candles for context.