Learn English – single, opposite word to “alibi”

single-word-requests

Oxford Advanced Learner’s Dictionary defines “alibi” as 1. evidence that proves that a person was in another place at the time of a crime and so could not have committed it. 2. an excuse for sth that you have done wrong.

Is there an opposite, single word (not like ‘evidence of presence’) to “alibi” denoting evidence that "positively" proves that a person was in the place at the time of an event taking place regardress whether it's associated with or not? For instance, I want to prove that I was "there" at a dinner party last night, not at another or other places, or I want to show off a picture taken at a dinner show together with movie stars.

If there is no opposite word, or antonym to "alibi," it's fine.

P.S. I checked the list of past ‘Is there single word for xxx” questions. I didn’t find the same question. However if there is, I’m willing to delete this question.

Best Answer

proof
evidence or argument establishing or helping to establish a fact or the truth of a statement.

Here's the proof (you've been asking for) that I was at a dinner party last night.

This answers the OP example: For instance, I want to prove that I was "there" at a dinner party last night, not at another or other places, or I want to show off a picture taken at a dinner show together with movie stars..

While I agree with Josh61 that proof is not the antonym for alibi, you wouldn't say about a photo which testifies your presence at a dinner party as: "This is my alibi..."