Did you even read the Politico article you referred to “evidence?”
“Before the White House released the rough transcript, Trump tweeted that Secretary of State Mike Pompeo had received permission from the Ukrainian government to do so. “They don’t know either what the big deal is. A total Witch Hunt Scam by the Democrats,” Trump tweeted Tuesday.
“Ukrainian legal expert Roman Marchenko said if the Ukrainian government didn’t give its approval, the release could have violated constitutional protections of privacy in correspondence and phone calls. “What Trump did (in publishing the rough transcript) is a violation of Ukrainian laws,” Marchenko told The Associated Press.”
As to recording these calls, you simply do not know what you are talking about. There is a voice recognition capability which will generate a computer-based “transcript.” But because of the differences in language, there will be staffers listening in an taking notes. They will be able to reconcile their notes against the computer-generated transcript. None of the people who were part of the call testified to any disagreements with the transcript which was released.
And as to transcripts “hidden” vice “released.” Here is what actually happened: The transcript which started of this sham was marked Top Secret//ORCON. Whether it was put up on JWICS (where, according to you, no one can see it… which is preposterous) does not matter — the contents of it were discussed by LT COL Vinman to others outside the chain of command before it was declassified (which is against the law), and by the so-called Whistleblower (who, according to the law — which I have to train on once a year), who is not proected when making an unauthorized discloser of classified information.
Due to this, all transcripts between Trump and Zelensky were put up on JWICS to tighten control over them and to prevent further leaks.