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Glassnode says 10 percent of Bitcoin supply is structurally vulnerable to quantum computing, watch gaps by exchange

About 9.6 percent of Bitcoin's total supply is in a structurally unsafe state if quantum computers eventually break cryptography, an analysis said. On-chain data firm Glassnode estimated about 1.92 million BTC is tied to address types that expose public keys. It highlighted holdings linked to Satoshi Nakamoto, early-era coins and Taproot-based addresses. The analysis said theft risk is not imminent and noted wide differences in exposure across institutions and exchanges.