How about I publically challenge you to a duel for a slander of a name of State officer in public media?
As for the proofs, that’s certainly not the way how one shall request them. First you will answer for your words, and, provided following that you will make a proper and polite request, I’ll consider whether you deserve for me to to disclose it for you or not.
Meanwhile I will consider a different thing: whether you shall be treated as a suspect in Cartel collaboration or not?