The indicator is based on the real-time volume in the market, Macd and Bollinger Band.
Green Bars in the histogram indicate high buy volume and prospective long position
Gray Bars indicate low volume and no trade zone
Red Bars indicate high sell volume and prospective short position
Best used with Bitcoin.
Could use this indicator along with your favorite indicator to get to know the direction of the market with respect to volume and since this is a script, you can set alerts too.
Happy Trading