In Czechia, you can ask the court to erase your criminal record. They usually comply after the same amount of years that was your original sentence. Meaning that after spending 3 years in prison, the criminal record stays with you further 3 years and after that if there is no reason to keep it and you ask for it, it gets erased.

Well, erased is not really exact. It won't be accessible by anyone and you will have the right to be treated as if you were never convicted.

So, Peter's original sentence was like 8 months? After so many years I believe nobody should hold his TPB involvement against him anymore.