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.

Digital assets worth more than $3 trillion, including bitcoin, could be exposed to theft risk within the next 4 to 7 years, a report warned. Project Eleven, which studies post-quantum security, said quantum computers capable of breaking widely used public-key cryptography could arrive as early as 2030 and no later than 2033. It said systems relying on elliptic-curve signatures could be vulnerable across crypto, finance and digital identity networks.