verify
verb (used with object)
to prove the truth of, as by evidence or testimony; confirm; substantiate.
Used to describe an ongoing action or state that is currently taking place in the immediate present.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In theory, I am verifying a fact which in practice even you confirm.
From Whirlpools A Novel of Modern Poland by Henryk Sienkiewicz