Bitcoin in 4 hours shows an upward trend: the Bollinger Bands are opening upwards, and the price is steadily above the 5-day line. The MACD has formed a golden cross, and the red bars are still expanding, indicating strong bullish momentum. Support is at 90000/89500, resistance at 91500/92000.

Operation suggestion:

• Bitcoin: go long around 90000, target 92000 $BTC