Hello newly registered fake account,
I am willing to proof it with a monetary bet of 50 BTC or the equal amount in XMR;
Whichever escrow is used is up to you as long as he´s neutral and has a good reputation.
How do you do that? You can, for example, give risto 25 BTC and tell him to say he did it.
How can you prove it?
1. I said a
Escrow.
2. We would go to a notary/lawyer to testify the trade history, costs a few hundred bucks.