$BTC The decline of the cryptocurrency market in the past week is due to several key factors: 

1. U.S. Trade Tariff Policy: The administration of U.S. President Donald Trump has imposed new trade tariffs causing uncertainty in the global economy. This has led to sell-offs in many sectors, including cryptocurrency. 

2. Outflows from Bitcoin and Ethereum ETF funds: In the past two weeks, Bitcoin ETFs in the U.S. have recorded a net outflow of $1.14 billion - the largest since their launch. This withdrawal was triggered by concerns over tariffs, inflation, and monetary policy. 

3. Change in investor sentiment: Data from social media shows an increase in bearish predictions for Bitcoin. Many retail investors who entered the market at the end of 2024 began selling their assets at lower prices, exacerbating the price decline. 

4. Macroeconomic conditions in the U.S.: The U.S. stock market opened, including the E-Mini S&P 500 futures index, has opened with a downward trend. Investors are still awaiting certainty regarding potential new tariff policies from the Trump administration that may trigger an escalation of the trade war. 

The combination of these factors has contributed to the significant decline of the cryptocurrency market in the past week.