Bitcoin Analysis Finds 6.9 Million Coins Exposed to Theoretical Quantum Risk at Block 950,000

An analysis at block 950,000 shows that 6,900,573 BTC, or approximately 34.45% of Bitcoin's circulating supply, has publicly revealed keys exposed to theoretical quantum computing attacks. However, researchers emphasize that headline figures overstate practical economic risk, as no quantum computer currently exists capable of breaking Bitcoin's cryptography and no theft has occurred. Active addresses of at least 1 BTC hold roughly 3.33 million exposed coins and can migrate to quantum-resistant schemes. The persistent vulnerability lies in dormant addresses holding around 2.28 million BTC, while filtering for high-value targets of 100 BTC or more compresses practical exposure to 351,654 BTC.