Google Quantum AI researchers have issued a warning about the potential risks posed by quantum computers to the security of cryptocurrencies like Bitcoin. Their research indicates that by 2029, these advanced machines could break the encryption systems that currently protect user wallets and transactions. The paper, co-authored by experts from the Ethereum Foundation and Stanford University, highlights that quantum computers can solve complex problems significantly faster than traditional computers, which may allow them to crack encryption keys in mere minutes. This threat extends to widely used public-key cryptography systems, including the Rivest-Shamir-Adleman (RSA) and Elliptic Curve Cryptography. While the concern is not immediate, the researchers emphasize that the crypto industry has a limited window to adapt. Google suggests transitioning to 'post-quantum cryptography' as a solution, though implementing this change will require time and collaboration across the industry to maintain user confidence in cryptocurrencies.