Yes, two different aspects.
The identity of the author of the Op-Ed piece as a high level member of the Trump administration was verified by the NY Times and I am fully convinced that this identification was correct.
But of course and as with any statement by any individual, what that high level member of the administration actually claimed in the Op-Ed, considered alone, must be initially viewed as "unverified." Except in this case what was written in the Op-Ed closely parallels what has been stated by many others in positions to know, including several who have been willing to be identified by name. It is also fully consistent with what has been publicly observed. The claims are therefore supported by independent information; whether this represents "verified" depends on the level of verification on which one insists.