Quick note on this relative volume-per-range signal (in the vein of VSA / VPA / volume spread analysis / volume price analysis).
The basic concept is simple: volume per range tells you how many shares it takes to move an asset by X. The higher this number, the harder it is for price to move, and the more likely it is that support/resistance or supply/demand levels are nearby. The lower this number is, the easier it is for price to move and the less likely it is that supply/demand are nearby.
So the signal here on Bitcoin could be indicating support coming in. This also coincides with the lows of a broadening formation, a DeMark reversal buy signal, and Anchored Volume Weighted Average Price levels (aVWAPs or Midas lines) from the most recent previous swing points.