Bitcoin Magazine reports that at block 950,000, 6.90 million BTC, representing 34.45% of the circulating supply, are cryptographically exposed to quantum attack risk. However, the practical theft risk is lower than this headline figure suggests, as active entities are likely to respond and attack costs are high. The analysis indicates that 3.33 million BTC belong to active and known entities, while the core long-term problem lies with dormant and non-responsive exposure, estimated at 2.28 million BTC. For high-value targets (>=100 BTC), the exposed supply narrows to 351,654 BTC.