Your link doesn't mention anything that prohibits the Fed.
True, thanks for pointing that out. Just guessing the Fed isn't going to reveal these transactions based on the court fight to release.
Audits of the Reserve Board and Federal Reserve banks may not include:
1.transactions for or with a foreign central bank or government, or nonprivate international financing organization;
2.deliberations, decisions, or actions on monetary policy matters;
3.transactions made under the direction of the Federal Open Market Committee; or
4.a part of a discussion or communication among or between members of the Board of Governors and officers and employees of the Federal Reserve System related to items (1), (2), or (3).[41][42]
The above gives the Fed tremendous power, control, and etc.