You are trying to put to many braincells that you dont have into it.  If someone tells you something that's "obviously false", then that means whatever was said, can absolutely be proven otherwise.  For example, if I told you that all the bitcoin in circulation were sent to a single address multiple times over,  then anyone with access can prove it wrong by pointing at the ledger.  But if you told someone the sky is green,  not anyone can verify that.  You have to try it for yourself by looking up because for some people it will be gray,  others it will be black,  and yet others it will be orange.  It'll depend on where you are,  time of day, and color blindness.  The same isnt true for Bitcoin which absolutely is provable.  Proving that a server cheats in a "provably fair" system cannot EVER be "verified" with math.  You have to verify it yourself with results that the server sends back to you.  Then and only then will you see that the proof myself and many others is actually true when it comes to the 4 through 6 tiers of free rolls on FBC.  I dont care if they are manipulated or not anyway,  but I do believe they shouldnt be claiming that it's "provably fair" when I've seen that its not.