Quantum computing threat to Bitcoin

Bitcoin developers debate quantum computing risks after Google's Willow chip and Australian research show progress. Some argue it's decades away.

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Big warning from ETH Denver: experts say the biggest quantum threat to Bitcoin isn't mining, but digital signatures beyond SHA-256. If quantum computers arrive early, millions of dormant BTC with exposed keys could be at serious risk. Stay vigilant! #Crypto #Bitcoin #QuantumThrea

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A rare metal alloy might just be the closest thing physics has to a holy grail moment. Researchers at NTNU in Norway, working with experimental collaborators in Italy, believe they may have observed a triplet superconductor in the niobium-rhenium alloy NbRe. The findings, published in Physical Review Letters, show the material behaving in ways that are fundamentally inconsistent with conventional superconductors. Traditional singlet superconductors can transmit electricity with zero resistance, but they cannot carry spin. Triplet superconductors, if they exist as theorized, can do both. That means transporting not just electrical current but also spin current with absolutely no energy loss. For quantum computing, the implications are significant. A persistent challenge in the field is performing operations with sufficient accuracy and stability. Triplet superconductors could help address that instability while dramatically reducing energy consumption, a combination that would be transformative for scaling quantum systems. There is a practical engineering advantage too. NbRe superconducts at 7 K, which sounds impossibly cold until you consider that other triplet superconductor candidates require temperatures near 1 K. That gap represents an enormous leap in feasibility. While the research team is careful to note this is not yet a definitive confirmation and requires independent verification, the data is a genuinely encouraging signal. If triplet superconductivity is verified, the ripple effects will extend well beyond quantum computing into spintronics and ultra-low-energy information processing. This is the kind of foundational materials discovery that entire technology roadmaps get rewritten around #QuantumComputing

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I first learned about quantum computers in 2016, while undergoing training for Boeing’s B777/787 in the United States. I remember thinking it would be terrifying if such technology became widespread. Since Bitcoin’s blockchain lacks quantum resistance—something that will become practically viable next year—it will likely fork soon. I predict that after such a fork, Bitcoin will never return to its previous price levels. Moving forward, mainstream adoption will shift toward ETH, XRP, XLM, HBAR, SOL, and others that offer digital IDs, KYC compliance, transparency, convenience, practicality, high TPS capacity, low costs, and quantum resistance. I hold no grudge against Bitcoin. But since it’s been used for payments in human trafficking, the dark web, drugs, and money laundering, I sincerely hope those uses disappear. Bitcoin itself isn’t to blame—it’s the mafia and criminal organizations that rely exclusively on Bitcoin for payments that frustrate me. That won’t be possible anymore. From now on, it will be possible to trace who bought what on which exchange and how much was sent to whom. It’ll be interesting to see how the Clarity Act shapes this development 👀

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"AI will crack Bitcoin" is the new "Bitcoin has no intrinsic value." 🙄 Is AI/Quantum computing going to crash Bitcoin to $0? The short answer: No. But the "Quantum Discount" is real. Fact: We are seeing the first NIST-standardized quantum-resistant upgrades hitting testnets THIS MONTH. The network isn't dying; it's leveling up. $BTC at $67k isn't a crash 👉it’s a massive "Quantum Discount" for those who understand the tech. 💎🙌 #AI #QuantumComputing

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quantum risk isn’t “bitcoin dies overnight”, it’s “signature scheme eventually needs an upgrade.” the urgent edge case is address reuse: once you’ve spent from an address, the pubkey is exposed and that’s the part a strong enough QC would target, so best practice is still don’t reuse addresses and consolidate UTXOs to fresh ones. sha256 is a different story (grover is quadratic), so it’s mainly an ecdsa/schnorr migration problem that can be handled with a softfork + long transition window.

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Interesting perspective on Bitcoin's recent pullback: a prominent developer argues that quantum computing fears aren't driving the 46% drop from October highs. The logic is sound. If investors were genuinely pricing in near-term quantum risk, we would see a divergence between crypto assets based on their specific quantum vulnerability profiles rather than a broad market sell-off. This matters for anyone watching the industry because it confirms markets aren't yet treating quantum computing as an imminent threat to cryptographic infrastructure. However, major asset managers are now actively flagging quantum risk in ETF filings, proving the conversation is finally maturing from if to when. The real takeaway isn't about price action. It is that quantum readiness is steadily moving from a niche technical discussion to a mainstream financial consideration, and that shift is healthy for both industries #QuantumComputing

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Bitcoin's 46% pullback from its October high is sparking debate about market drivers, but industry consensus suggests quantum computing is not the culprit. The logic is straightforward. If investors were genuinely pricing in near-term quantum risk, Ether would likely outperform Bitcoin rather than falling even harder. With Ether down roughly 58% over the same period, broader macroeconomic factors are clearly at play. A more likely explanation is capital rotation. Artificial intelligence has emerged as a massive competing investment theme, pulling institutional dollars away from digital assets in an unprecedented way. That said, the quantum conversation is not going away. Asset managers are already flagging quantum computing as a potential long-term risk to network integrity in ETF filings. Regardless of current price action, the industry must proactively plan its transition to post-quantum cryptography. Markets rarely move on a single narrative, and complex drawdowns require a broader perspective. The intersection of quantum technology and cryptography is a methodical evolution, not an immediate market catalyst #QuantumComputing

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🚨 Bitcoin at risk! Charles Edwards warns its value could halve if it doesn’t upgrade to quantum-resistant code. With Q-Day projected by 2030, the clock is ticking for Bitcoin's tech evolution. #Bitcoin