How does the rise of digital currencies impact governmental control over monetary policy?

The advent and growth of digital currencies, like Bitcoin and Ethereum, are reshaping the financial landscape globally. These decentralized forms of money operate independently of traditional banking systems, and their popularity raises questions about how they influence the ability of governments to manage monetary policy effectively. Central banks have historically used tools such as interest rates and money supply adjustments to guide economic stability. However, the widespread adoption of digital currencies that bypass these mechanisms could undermine these efforts, challenging governments to explore new regulatory frameworks and adapt to a rapidly evolving economic environment. How are governments responding to this shift, and what implications does it have for future monetary policy?