That's the part that i have been wanting to hear, by that, i mean the validation process because i once stated that it doesn't seem to make sense if there is no validation involved, as mischievous users can manipulate the process to their will but now that i see that there is a process involved, i'm relieved, good to know
I am sure that behind the whole validation a sophisticated mechanism is running. They finally want to catch hackers and not fool around with any script kiddies:-)
And any attempt at manipulation will certainly be detected and the cheater must then expect consequences