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6.04M Bitcoin are vulnerable to future quantum attacks, with Binance holding 85% exposed and Coinbase only 5%.

Market News
20 May 2026
Benzinga
View Source
Bearish
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Glassnode's analysis reveals that 6.04 million Bitcoin (30.2% of total supply) are vulnerable to future quantum computer attacks due to exposed public keys on the blockchain. This exposure arises mainly from address reuse and older Bitcoin address types. Binance holds 85% of its Bitcoin in these quantum-exposed outputs, while Coinbase's exposure is much lower at 5%. Although not an immediate threat, exchanges and holders can reduce risk by improving address management and avoiding key reuse.

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