Well, this is all pretty irritating. You guys going at it like this and I get the moderation requests.
a) It is possible to prove a negative:
You: "I accuse you of punching me in the face on May 25, 1965."
Me: "Here's my birth certificate. I was born in 1976."
b) Courts of law do not prove negatives. They only find you "not guilty". In some countries, there are also verdicts like "not proven"
"Actual innocence" is a different thing you can read about here: https://en.wikipedia.org/wiki/Actual_innocence
Donald Trump is a special case, not just because he's president, but because he literally bragged about his ability to sexual assault women and get away with it, then declared that he'd never really done that ... and then women came forward to say, "Yeah, that's basically exactly what he did to me." It's like having a confession, but one not specific to each individual criminal accusation.
Now, if the bunch of you aren't going to stop all this trolling, name-calling and assorted bullshit, I'm going to can the whole lot of you.