That would be referred to as an ALIBI, and you would approach the accused's attorney as to how to offer your assistance in their case.
It is nearly impossible to prove someone innocent. The best you can hope for is to persuade others that you are not guilty of what they accuse you of.
Adorable.
If you are the defendant, prove that you are innocent. If you are the plaintiff, prove that your accussation is correct. Apart from that, everything depends on your particular issue and the evidence that goes with it.
Find a way to dispute the charges in court and prove he is innocent. If you can't prove he is innocent of what he was charged then you can't do anything other than, perhaps, putting up bail for him until the trial ends.
I believe that you might be thinking of the French system of justice. There, you are considered guilty until you can prove yourself innocent. In English jurisprudence it is the opposite way around - innocent until proven guilty.That is correct but the answer that you are looking for is the 'admiralty courts'
No you would have to prove the lineage to prove he is a purebreed.
No, it is only rude to do it in a rude way or to gloat while doing it.
I just thought of one! How about a movie about a woman who was framed of a murder, so she's trying to escape jail to find a way to prove that she's Innocent.
Try to prove to everyone that it is a lie... If its bothering you that much you'll fine a way to prove yourself.
There is no way to prove someone is anyones biggest fan, so there is no answer.
describe what might have happened to you to a professional or to your doctor
You cannot prove it either way any more than you can prove whether it is for real or is everybody having themseves on. I strongly suspect the latter.
It is extremely difficult to prove things which are not true.