In our systematic screenings of payment processors, we have recently discovered that the payment processor Corefy (formerly PayCore), operated by Ukrainians around Denys Kyrychenko, facilitates, among others, the online casino, sports betting, and gambling scheme Mostbet. It processes deposits from Russian visitors via obscure domains. In addition to Corefy, we have discovered ChangeCoins for crypto and the Russian Perfect Money. Cyprus-based Venson Ltd operates Mostbet under a Curacao license.