So you are going to track the web traffic towards all crypto exchanges?That doesn't seem like a valid measure.Web traffic can be faked pretty easily as well.Their orderbook data can be faked as well.
They only to combat fake trading volume is to adopt decentralized exchanges,where nobody can mess around with the trading volumes.
that is what i was also thinking about but usually the exchanges that i see faking their volume are only reporting a fake (final) volume without bothering to change much else. this is specially true for smaller exchanges and those super shady ones like Yobit. so such scores can eliminate a lot of them easily.
this only becomes a problem with big and popular exchanges who know well how to hide their track.