Proof of Koran Authenticity

While much of religion is faith, are there any statements in the Koran we can point to that prove its authenticity? Using the Torah as an example, one of the things Jews point to is the fact that the Torah says there is only one animal that has split hooves but doesn't chew its cud (the pig). Only God can make that statement since nobody else could be sure enough, and if proven wrong, the religion would fall apart. What can we say about the Koran that accomplishes the same thing?