The fake trades on BTCCNY

Looking for bottom truth in the recent volumes drop on btc, i made a volume compare tool. The reasoning is that if volume on btccny really disappeared due to the forbidden margin trading, there should be a big difference in the ratio since a few days ago.

Blue and green lines are a ratio against the same base volume. the red line is a 5 day average of the 2 ratios.

The idea is that while volume goes away in the china exchanges due to the margin trading evaporating, it should remain the same in western exchanges, so the ratio shows a big drop. BUT:

1 - the avg of volume ratios is so irregular, no clear correlation shows up
2 - the last days (from the "margin prohibition") have a little dip then spike, but appear well in the bounds the general fluctuation

so, the recent volume drop was both in china and the west, and "fake margin" trades didn't impact market after all?
comments welcome...
BTCCNYBTCUSDmarginVolume Indicator

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