Google just told the Bitcoin and cryptocurrencies industry it has less time than it thought to prepare for the quantum computing influence. In a whitepaper published March 31, Google Quantum AI researchers demonstrated that breaking the elliptic curve cryptography protecting bitcoin, ether and most major cryptocurrencies could require fewer than 500,000 physical qubits on a superconducting quantum computer. That’s roughly a 20 times reduction from prior estimates, which pegged the figure in the millions.

https://www.forbes.com/sites/digital-assets/2026/03/31/google-finds-quantum-computers-could-break-bitcoin-sooner-than-expected/