Bitcoin had a hard sell off followed by going sideways a few weeks. The big volume spike on 22 June looks lead to a bullish harami candle that looks like the bottom of this downtrend. From there on a ascending triangle formed slowly that is now near a break out point.
There is also the possibility of a RSI and MACD divergence but I'm not sure about that because it's very small - but it's definitely eye catching.
Bitcoin looks like to break out soon of this ascending triangle to a new higher high.