I didn't quite understand what you wanted to say
I mean by the OP "trying to speculate about what people may have deposited or withdrawn at a specific time", according to you. Anyway, you can be pretty sure that this is not what I meant myself. I meant exactly what you wrote first, i.e. evaluating the amount of funds withdrawn (deposited) to "predict future price movements". And in the sentence before the one you quoted I wrote just about that, i.e. people massively withdrawing money from all exchanges may be a sure sign of a future price fall (or at least, significant change), and you don't need correlation analysis to grasp that. You should rather look at a specific cause of this "bank run", so to speak