Glassnode: About 6.04M BTC (Nearly 30%) May Be Exposed to Future Quantum Risk

Glassnode analysis indicates that around 6.04 million BTC—nearly 30% of total supply—could be theoretically vulnerable if future quantum computing can defeat today’s cryptography. The exposure is tied to coins whose public keys are already visible on-chain, including about 4.12 million BTC linked to address reuse and older custody practices, plus more than 1.6 million BTC held by centralized exchanges in potentially exposed addresses.