Bitcoin prices have fallen to $81,000 amid rising speculation that Kevin Warsh could become the next Federal Reserve Chair. Market analysts, including Markus Thielen of 10x Research, attribute the decline to Warsh's reputation for advocating monetary discipline and higher real interest rates, which are seen as unfavorable for Bitcoin. Warsh's policy stance, which views cryptocurrencies as speculative, could lead to tighter liquidity and reduced demand for risk assets.