Suspect Claims
While the tapes would be great to hear and might even prove that the Soviet Union lied, there’s no evidence suggesting that it’s real. No one can back up those claims, and there are no methods for verification, either.
More Lost Cosmonauts
In most cases, the conspiracy theories involve other lost cosmonauts. Mikhail Rudenko worked as a scientist for the Soviets, claiming that they held secret flights to space in ’57, ’58, and ’59. Everything came out to the public in 2011, but no names were released.