Google Quantum AI research moves up quantum threat timeline, warns millions of ETH and BTC could be exposed

Google Quantum AI published a whitepaper and research outlining how advances in quantum hardware could threaten the cryptographic primitives that protect cryptocurrency private keys, providing technical estimates of the resources required for such attacks ^{[1] [2]}.

The analysis, and subsequent coverage, estimates an attacker with a sufficiently powerful quantum computer could systematically drain wallets: Finbold reports the top 1,000 Ethereum addresses could lose about 20.5 million ETH within nine days if a quantum‑resistant upgrade is not adopted ^{[3] [1]}.

Other reporting says the new research lowers the previously estimated hardware requirements for cracking private keys and moves the practical ‘quantum deadline’ earlier; Protos notes potential exposure of large Bitcoin holdings, including over a million BTC attributed to Satoshi, while Bankless summarizes Google as accelerating the post‑quantum timeline to 2029 ^{[4] [2]}.

Together, the papers and coverage underscore the need for the crypto industry to evaluate and adopt post‑quantum defensive measures for long‑lived keys and custodial balances ^{[1] [2]}.