Crypto analyst Plan C has highlighted a potential 'hidden bear market' for Bitcoin in 2025, despite the cryptocurrency reaching an all-time high in USD terms. According to Plan C, Bitcoin's price remained largely stagnant around $100,000 throughout the year, underperforming compared to assets like silver, gold, and the S&P 500. This sideways trading pattern suggests that while 2025 might appear bullish by traditional standards, the underlying market dynamics indicate a bearish trend.