From the four-hour level observation, Bitcoin is currently in an oscillating uptrend channel following a breakout. K-lines are advancing steadily along the upper Bollinger Band rail, displaying strong upside momentum. The moving average system maintains a bullish alignment, with short-term and medium-term moving averages providing effective support. Lows are progressively rising, highs are continuously moving higher, and the overall uptrend structure remains intact with a technically bullish bias.