In general, it shouldn't be the player who has to prove their honesty; that's tantamount to disrespecting oneself. Instead, evidence of their dishonest play should be presented to them.
I repeat, I won't claim whether Britva was banned fairly or not; I don't know. He was banned by the then-current online master of the Third Age. Each master has the right to ban. Naturally, as the host of the Second Age offline events, I didn't interfere, and it somehow passed me by. Nevertheless, I don't rule out that Vigo might have acted unfairly, as this has been observed with him before. To initiate an investigation into his activities, all that was needed was to write a few words to the address I posted above. I, for example, know that he banned one player even during his infamous tournament. Absolutely unfairly. Essentially, only because that player won against Vitalik. Now the player has been unbanned. Although he still doesn't play. Again, we are always ready to admit our mistakes if they actually occurred.
I remember that one of the hosts banned the player Catch for violating the tournament rules. For attempting to clarify and justify himself, the player Catch was banned by the host "forever" - an exclusive right of the Creator, by the way. If a sufficiently large number of "second-tier" and "third-tier" players hadn't reacted to this, let's say, vehemently, everything would have remained as it was.
I'm not bringing this up. Back then, if the entire forum (except Alex_R) hadn't rallied to my defense, who knows what would have happened.