BTC/USD bull flag, break out likely to confirm

COINBASE:BTCUSD   Bitcoin / U.S. Dollar
Breakout of bull flag on BTC /USD. Possible resistance at 50MA.

Decreasing volume on consolidation and volume spike on 4HR candle break out. Bullish MACD crossover likely to confirm. Plenty of room for RSI to move upwards.
Comment: The upwards momentum has followed through but with decreasing volume