Quantum

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<p><strong>Bitcoin's roughly 50% drawdown may have already absorbed much of the market's fear around quantum computing, according to Bernstein, but live market data points to a smaller decline from the peak, making the call more of a sentiment read than a settled fact.</strong></p>
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 <p>Key Takeaway</p>
 <ul>
  <li><a href="https://cointelegraph.com/news/bitcoin-priced-in-quantum-computing-bernstein" rel="noopener noreferrer nofollow">Cointelegraph reported</a> that Bernstein sees Bitcoin's quantum threat as real but manageable, with the selloff already reflecting part of that fear.</li>
  <li><a href="https://www.coingecko.com/en/coins/bitcoin" rel="noopener noreferrer nofollow">$72,095</a> on CoinGecko leaves Bitcoin about 42.93% below its October 6, 2025 all-time high of $126,080, which is close to but not the same as a full half-off move.</li>
  <li><a href="https://quantumai.google/static/site-assets/downloads/cryptocurrency-whitepaper.pdf" rel="noopener noreferrer nofollow">Google Quantum AI's March 30, 2026 paper</a> estimated a primed secp256k1 attack could land in roughly 9 to 12 minutes, while <a href="https://www.investing.com/news/analyst-ratings/bernstein-says-quantum-computing-poses-manageable-risk-to-bitcoin-93CH-4603142" rel="noopener noreferrer nofollow">Investing.com's summary of Bernstein</a> said Bitcoin may still have three to five years to adapt.</li>
 </ul>
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<h2 id="what-bernstein-actually-said-about-bitcoin-s-quantum-risk">What Bernstein Actually Said About Bitcoin's Quantum Risk</h2>
<p>Cointelegraph reported that Bernstein told the outlet Bitcoin's selloff has already priced in much of the market's quantum-computing anxiety. The same report said Bernstein framed the threat as manageable rather than immediately existential, with developers still having time to agree on a post-quantum path.</p>
<p>That attribution matters because there is no public Bernstein research PDF attached to the story. Readers are relying on media summaries of the note, not a primary document released by the brokerage itself, which makes the "priced in" call an analyst interpretation rather than a directly auditable market fact.</p>
<p>Cointelegraph also said the note referenced Bitcoin's October 2025 all-time high above $126,000 as part of the argument that the market has already gone through a major reset. That helps explain why Bernstein is treating the latest quantum scare as a valuation issue and a governance issue at the same time.</p>
<h2 id="why-the-drawdown-framing-needs-a-live-data-check">Why the Drawdown Framing Needs a Live Data Check</h2>
<p>On CoinGecko's Bitcoin page, spot BTC was around $72,095, up about 1.79% over 24 hours, with a market capitalization near $1.44 trillion and roughly $32.11 billion in daily volume.</p>
<figure>
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  <div>
   Bitcoin Spot Price
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  <div>
   $72,095
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  <figcaption>
   Live price check used in the research brief. Source: CoinGecko.
  </figcaption>
 </div>
</figure>
<p>That same CoinGecko market snapshot puts Bitcoin about 42.93% below its October 6, 2025 all-time high of $126,080. In other words, the current data supports a steep correction, but not a confirmed half-off move from the peak.</p>
<figure>
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  <div>
   Drawdown From ATH
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  <div>
   -42.93%
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  <figcaption>
   Research-backed drawdown versus Bitcoin's October 2025 peak, used to pressure-test the '50% drawdown' framing. Source: CoinGecko.
  </figcaption>
 </div>
</figure>
<p>That distinction is why Bernstein's argument matters. If the market is already trading far below the cycle top, then the brokerage can plausibly argue that some quantum fear is embedded in price, but the live drawdown data also shows the headline's framing should be treated as approximate, not exact.</p>
<h2 id="what-makes-the-threat-real-and-why-bernstein-still-sees-time-to-respond">What Makes the Threat Real and Why Bernstein Still Sees Time to Respond</h2>
<p>Google Quantum AI's March 30, 2026 whitepaper is the technical trigger behind the latest debate. The paper said secp256k1 attacks could be executed with fewer than half a million physical qubits and estimated a primed on-spend attack window of roughly 9 to 12 minutes.</p>
<p>Investing.com's summary of Bernstein said the highest-risk pool sits in roughly 1.7 million BTC held in legacy wallets, many of them tied to the Satoshi era. The same summary said Bitcoin mining's SHA-based security does not face a realistic Shor's-algorithm threat, which separates signature exposure from mining security.</p>
<p>Bernstein also expects Bitcoin and other crypto protocols to have roughly three to five years to evolve toward post-quantum security. Cointelegraph added that the note pointed to BIP-360 as one possible soft-fork route for exposed addresses.</p>
<p>The same Cointelegraph report said around 8% of BTC supply would still sit in inactive addresses that cannot easily migrate. That is the bearish edge of the story: even with time to coordinate an upgrade, some coins may remain exposed because their owners are absent, lost, or unwilling to move.</p>
<h2 id="market-context-still-cuts-both-ways">Market Context Still Cuts Both Ways</h2>
<p>The bull case rests on the response window and the existence of an upgrade path. The bear case rests on the 9 to 12 minute attack window, the 1.7 million BTC in older wallets, and the fact that the underlying Bernstein note is still not public.</p>
<p>That governance challenge is arriving while Bitcoin demand is still being expressed in different ways across the market. Treasury-style accumulation remains part of the narrative in <a rel="noopener noreferrer nofollow">Nigel Farage-Backed Stack BTC Buys £2M in Bitcoin</a>, speculative appetite is still visible in <a rel="noopener noreferrer nofollow">TRUMP Token Whales Load Up Before Luncheon Event</a>, and policymakers are simultaneously discussing volatility controls in <a rel="noopener noreferrer nofollow">South Korea’s Central Bank Pitches Crypto ‘Circuit Breakers’</a>.</p>
<p>For now, Bernstein's call looks narrower than the headline suggests. The technical risk has been sharpened by Google's data, the market has already repriced meaningfully from the peak, and Bitcoin's next step depends less on whether quantum computing matters than on whether the ecosystem can coordinate a post-quantum migration before the theory becomes a practical attack.</p>
<p>Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency markets carry risk, and readers should do their own research before making decisions.</p>
<p>Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.</p><a href="https://coinwy.com/?p=17245" rel="noopener noreferrer nofollow">Read original article on coinwy.com</a>
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Bitcoin Quantum Threat Priced In, Bernstein Says

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