Over 35% of Bitcoin Supply Faces Potential Quantum Risk, New Data Shows

About 7.12 million Bitcoin, or 35.4% of every coin in existence, now has a weak spot. Most owners can fix it in minutes. Satoshi Nakamoto’s coins may never be fixed. Analytics firm Glassnode counted coins whose “public key” already shows on Bitcoin’s public ledger. Think of a public key as a lock anyone can study. Today’s computers cannot pick it. A large enough quantum computer, in theory, could, and then move the coins. Whose Bitcoin is Exposed? Glassnode says 25.8% of supply is exposed because people reused addresses. Exchanges hold 11.6% of supply in exposed addresses. Glassnode’s entity data puts Robinhood at 100%, Binance at 85% and Coinbase at about 5%. US government holdings show none. Glassnode says these are not security ratings.

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