Hey, @bbrewer.
Somehow I missed this. So now I'm here to show you that the shenanigans continue, except that World Coin Index has decided to play along with Bithumb as long as they stay within a certain range of the other exchanges, is my guess.
Basically, what happens in this newer chart is WCI bouncing back and forth between counting the numbers from Bithumb, then not, so it turns everything into a polygraph test, rather than a heart readout. :)
In the past, WCI has resolved the issue rather quickly by essentially putting the out of whack exchange in time out. Apparently, it seems to be tired of doing that. :)
Instead, for the last few days, they've just been rolling with it.