Glassnode: Nearly $500 billion worth of Bitcoin faces the risk of future quantum computing attacks.

CoinFeed reported on May 22 that, according to Decrypt, research published by Glassnode shows that nearly one-third of circulating Bitcoin has exposed its public keys, theoretically making it vulnerable to future quantum computer attacks. Specifically, approximately 6.04 million Bitcoins, worth over $469 billion, are at quantum risk. Of these, about 1.92 million are structurally exposed, stemming from early "pay to public key" addresses, multi-signature structures, and Taproot outputs—script formats that default to exposing public keys. Approximately 4.12 million are operationally exposed, due to address reuse. Among the operationally exposed Bitcoins, about 1.66 million are exchange-related, accounting for 8.3% of the total supply and approximately 40% of all operationally exposed Bitcoins.