In your place, I would ask the trusted escrow to release a public report about his / her honest experience to members. Some escrows do not even ask for a fee for such a thing. If no one wants to buy with escrow, you could simply ask a highly popular member here to simply confirm that you have the accounts and the mentioned successful transactions. This method could clean your name from the accusation on you, too. I can also understand if you do not keep the mentioned idea important because of the relatively low prices of each account, but from a customer viewpoint, it may be that important when someone wants to buy a higher amount of accounts or simply is disturbed by the accusation in the thread.