The Bank of Japan is preparing to increase interest rates to their highest level in three decades, a move that could present an additional challenge for Bitcoin and its overall market performance. This decision reflects the central bank's efforts to curb inflation and stabilize the economy, but it also raises concerns among cryptocurrency investors, who may react negatively to the tightening of monetary policy. As interest rates climb, traditional financial assets often become more attractive, potentially diverting investment away from speculative assets like Bitcoin and leading to increased volatility in the cryptocurrency market.
source: https://www.coindesk.com/markets/2025/12/13/bank-of-japan-set-to-hike-rates-to-30-year-high-posing-another-threat-to-bitcoin