Dude... No. How, in your world do you "prove" innocence?
You don't.
https://legaldictionary.net/acquittal/
It's literally in the legal definition of acquittal and is the logical negation of "guilt". Not guilty is not a claim of innocence, and there's no way to prove someone innocent. You are either guilty of a crime by means of evidence, or you are not guilty because there was not sufficient evidence. The most famous case I can think of is the O.J. Simpson trial, where he was acquitted but with almost complete certainty (especially after his book deal) was not innocent.
You're mistaking legal terms with webster dictionary terms. Believe what you want but you are not innocent if you are acquitted.