so you are excluding the "obvious" fake volume not fake volume in general. the exchanges can still continue producing fake volume and if someday your website (or the method in general) became popular they can easily mask it.
We can't really make exchanges to stop faking volumes anyway, it will be always happening and I don't think this project is aiming to stop it directly. All I get from OP is to remove those fake volumes from price tracker site and creating a place where people can find a more genuine prices.
Although it might only obvious fake volumem at start and volume fakers won't stop, at least OP has a big efforts to avoid tracking fake volumes and of course the site and algo will improve if OP really commit to develop this.