The middle indicator (blue line chart) is the On-Balance-Volume indicator and the bottom blue (mountain) chart (overlain the volume) is simply a moving average of the volume data.

I prefer using volume indicators rather than lagging price indicators, as they are independent of the price action. The lagging price indicators, as you hinted at in your post, are not really reliable, as the price behaviour characteristic of the crypto market are not really understood yet.

I also agree with you that taking a higher timeframe perspective is the only way to go: as crypto is even more sensitive to news than the forex markets, therefore a lot of noise in the price action.

Looking forward to more posts from you.