Glassnode: Public keys for 35.4% of Bitcoin's supply have been revealed

Glassnode reported that roughly 7.12 million BTC, or 35.4% of Bitcoin's total supply, now has its public key exposed on-chain, making those coins potential targets for future quantum computers. Of that exposed portion, 25.8% of supply stems from address reuse, with exchange-linked addresses accounting for 11.6%. The finding matters because public-key exposure is the precondition for a quantum attacker to derive private keys, though the threat remains theoretical until sufficiently powerful machines arrive. Glassnode noted that moving coins exposed through address reuse to fresh addresses eliminates that particular exposure. What to watch next is whether holders and exchanges migrate reused-address balances to new addresses, and how much of the remaining exposure is structural rather than fixable by simple transfers.