What are SEC-approved spot bitcoin ETFs?
Could you elaborate on what SEC-approved spot bitcoin ETFs are and how they function within the cryptocurrency and financial landscape? Are these ETFs directly invested in bitcoin, or do they track the performance of bitcoin through derivatives? What are the key factors that investors should consider before investing in these ETFs? Additionally, how do SEC-approved spot bitcoin ETFs differ from other types of bitcoin-related investments, such as futures-based ETFs or directly buying bitcoin?