The Ambiguity of 'Verify'

There are sentences the uttering of which falsifies them, and sentences the uttering of which verifies them. An example of the former is 'I am not talking now.' The act of uttering this sentence falsifies it. By contrast, the act of uttering 'I am talking now' verifies it.  If to falsify is to make false, then to verify is to make true.

But 'verify' (from L. veritas, truth) is ambiguous, and clarity will be served if we distinguish its two senses, one epistemological, the other ontological.

In the epistemological sense, to verify a claim is to ascertain whether or not it is true. In its ontological sense, to verify is to make true. My saying 'I am now talking' makes true the proposition expressed by the sentence; it is not part of any ascertaining of the truth of the proposition expressed. The utterance-event is the truth-maker of the proposition in question. It is the ontic ground of the proposition's truth.  There is, therefore, a clear sense in which the truthmaker of a truthbearer is its verifier.