Bedeutung von “proof” — Learner’s Dictionary

proof

noun [ U ] us uk /pruːf/
There was no absolute proof of fraud.In the absence of any proof, it is impossible to accuse her.That is not conclusive proof that he was at the scene.We need concrete proof that a crime has been committed.Attach your proof of address to the application.

B2 a fact or a piece of information that shows something exists or is true:

She showed us her passport as proof of her identity.
[ + (that) ] My landlord has asked for proof that I'm employed.

a printed copy of something which is examined and corrected before the final copies are printed

(Definition von “proof noun” aus dem Cambridge Learner's Dictionary © Cambridge University Press)