If a quantum computer capable of breaking modern encryption emerges, Bitcoin would be at risk of attack without detection. Post-quantum encryption standards have been finalized, but Bitcoin’s defenses may crumble faster than it can respond. Powerful quantum computers could access wallets, causing ownership changes without detection. Early wallets like Satoshi’s would be most vulnerable. Traditional finance is already transitioning to post-quantum encryption, while most major blockchains still rely on outdated technology. Some newer blockchain projects are quantum-ready from inception, while others explore quantum-resistant options. The primary concern for Bitcoin holders is a collapse in confidence, affecting prices and traditional markets. Experts believe quantum-secure blockchain systems are achievable and aligning with standards in traditional finance is crucial. Quantum threats remain theoretical for now, as Bitcoin’s encryption remains strong.

Read more at Cointelegraph: What if Quantum Computers Cracked Bitcoin Today?