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Over 7 million BTC exposed to quantum risk as public keys are visible on-chain, rising since 2021.

Protocol Fundamentals
10 Nov 2026, 17:35 WIB
Crypto Briefing
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Neutral
Over 7 million BTC exposed to quantum risk as public keys are visible on-chain, rising since 2021.

About 7.12 million Bitcoin, or 35.4% of the total supply, have their public keys visible on the blockchain, making them potentially vulnerable if quantum computers capable of breaking Bitcoin's encryption emerge. This exposure has increased from 24.8% in early 2021 to 35.4% in November 2026, driven by address reuse and legacy transaction formats. While quantum computers capable of such attacks do not yet exist, the risk highlights the importance of moving coins from reused addresses to new ones. However, some coins, including those linked to Bitcoin's creator Satoshi Nakamoto, remain permanently exposed due to their transaction history. The situation underscores the need for future protocol upgrades to address quantum threats.

The story about Bitcoin's exposed public keys provides context for cryptocurrency market activity. For readers following major cryptocurrencies on Pluang, here is the market snapshot as of Nov 10, 2026 22:52 WIB: out of 50 major cryptocurrencies, 5 rose and 44 fell today. Among notable movers, CRV dropped 5.49% to Rp4.559 with a typical hold time of 63 days and a Pluang order activity of 44% Sell / 56% Buy, while ALGO fell 5.28% to Rp1.615 with a longer hold time of 131 days and a 13% Sell / 87% Buy split, and ADA declined 5.02% to Rp3.125 with a 128-day hold and 22% Sell / 78% Buy activity.

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