Bitcoin's value has dropped significantly, now trading below $70,000, down from a peak of $126,000 in October 2022. Concerns about the cryptocurrency's security have intensified following warnings from industry leaders, including Elon Musk and insights from Google's Quantum AI team. Musk highlighted the urgency of updating cryptocurrencies to resist quantum attacks, stating that those who forget their wallet passwords may eventually regain access due to quantum advancements. Research indicates that the resources required to break Bitcoin's encryption have been reduced by 20 times, posing a serious threat to the cryptocurrency's security. Approximately 7 million bitcoins, valued at around $470 billion, could be vulnerable if quantum computing technology advances as predicted. Experts are calling for immediate action to migrate to post-quantum cryptography by 2029, likening the situation to the historical Manhattan Project due to its potential transformative impact.