What is bitcoin & why does it matter?
Could you elaborate on the concept of Bitcoin and its significance in today's financial landscape? I'm particularly interested in understanding the essence of this digital currency, its underlying technology, and how it's poised to revolutionize traditional financial systems. Could you also discuss some of the key factors that have contributed to Bitcoin's popularity and market dominance, as well as the potential challenges it faces in achieving widespread adoption? Lastly, what do you believe is the long-term impact of Bitcoin on the global economy?