Bitcoin's price fell from the low $80,000 range to approximately $75,000 at the beginning of the month, influenced by the Federal Reserve's first interest rate hike since 2023 (a 25 basis point increase to 3.75%-4%) and the U.S. Senate's failure to advance the Clarity Act, which hindered efforts to establish a federal regulatory framework for digital assets. On September 18, Bitcoin surged over 5%, briefly surpassing $80,000 to reach approximately $80,700-$80,900. On the same day, U.S. spot Bitcoin ETFs attracted about $160 million in net inflows, reversing the outflows of the previous two trading days.