I made a BTC:USD analysis based on my own buy-sell volume indicator, and I want to share the result with you.

The indicator introduction:
I build a volume indicator, which separates the volume to buy and sell volume (columns), and contain two MA lines derived from the buy-sell volume , the green one is the bullMA from the buy volume , and the red one is the bearMA from the sell volume . This indicator contains a filled area, which is the pure SMA values from the volume , this is get green background if the bullMA is greater than the bearMA and red if the bearMA greater than the bullMA.

The analysis:
I checked the earlier BTC sessions and I found if the price over the ATH or the local top, the bearMA crosses the bullMA upward on the indicator. I call it bearCross, and if this happens the price continues to fall by ~30-50%. I drew the bull (green background) sessions and the bear (red) sessions on the price-chart. And drew with red arrows if the bearCross happens. We got one or two (maybe three) BearCrosses in one bear session.
I think if end of the bull, when we got the first bearCross, which is indicat the middle of the bear session. The second one is the sign of the bear end or the end is near.So we can see the bullMA is fell near to bearMA, and the bearMA rised too, if the bearCross is coming (maybe 1-2 week), we are on halfway in the bear session… 

Confirmation by RSI:
At every bearCross the RSI is between ~40-50 and the RSI-MA line (this is a special MA line derived from RSI and MA values) is red, which means that the price is falling… 
What happens if we get a bullCross?If the bullMA crosses the bearMA upwards, we get a bullCross (I drew with green arrows), and that means the bull session has begun.

This is not a financial advice, just my analysis, my opinion!