Glassnode has reported that approximately 6.04 million BTC, accounting for 30.2% of Bitcoin's issued supply, is currently exposed to public-key vulnerabilities. According to NS3.AI, this exposure could become problematic if quantum computing advances to a point where it can compromise Bitcoin's cryptographic security.
The exposed supply is divided into two categories: 1.92 million BTC is structurally exposed, while 4.12 million BTC faces operational exposure, primarily due to address reuse. Notably, 1.66 million BTC of the operationally exposed supply is linked to exchanges. However, Glassnode emphasized that these figures should not be interpreted as indicators of solvency or risk levels for any specific platform.