An estimated 6.04 million Bitcoin (BTC), or about 30.2% of the total supply, are exposed to potential quantum attacks because their public keys are visible on the blockchain. This exposure arises from both structural factors, like early output formats and Taproot, and operational practices such as address reuse and custody methods. While 13.99 million BTC remain unexposed under current tests, the risk highlights the need for improved security practices and future protocol upgrades like BIP-360 to reduce vulnerability. The timeline for quantum computers capable of such attacks remains uncertain, but the exposure underscores ongoing security challenges for Bitcoin holders and exchanges.
The story on Bitcoin's quantum exposure provides context for readers interested in cryptocurrency market trends. For readers following major cryptocurrencies on Pluang, here is the market snapshot as of Oct 22, 2026 19:31 WIB: out of 50 priced major cryptocurrencies, 6 rose and 43 fell today. Notable movers include SUSHI at Rp3.912 with a 1-day change of -3.83% and Pluang order activity of 86% Sell / 14% Buy, ADA at Rp3.902 with a 1-day change of -3.82%, and LTC at Rp1.069.268 with a 1-day change of -3.54%.
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