New YorkMore than 6 million bitcoin sit behind already-visible public keys.

That is 31.2% of circulating supply, up 222,000 bitcoin since May, Glassnode data show.

Public keys appear through address reuse and early pay-to-public-key outputs, and a sufficiently capable quantum computer could derive private keys from them.

The data measure address usage, and no practical attack on bitcoin wallet keys has been demonstrated.

Researcher Justin Drake warns AI could, in a worst case, find a shortcut breaking wallet cryptography “in months, not years.”

How each outlet framed it
CoinDesk
reveals stark institutional custody exposure disparities (Coinbase 10% vs Binance 83%), notes 222k BTC increase amid quantum risks

Sources: CoinDesk