The proof of the pudding is in the eating. ✬

The detective found absolute proof of the man's guilt. ✬

The proof is trivial. ✬

The proof is left to the reader. ✬

There is indisputable proof that Tom is the thief. ✬

What proof do you have that Tom was the one who stole your mother's necklace? ✬

No proof was ever found. ✬

You have no proof. ✬

You don't have any proof. ✬

I'd like to see some proof. ✬