Promsbyazbank filed a bankruptcy petition with the Arbitration Court of the Sverdlovsk Region for the founder of the Russian mining company BitRiver, Igor Rants, writes RBC. The amount of the bank's claims exceeds 770 million rubles. In winter, the businessman was arrested on charges of tax evasion and fraud on an extremely large scale of one billion rubles in the supply of cryptocurrency mining equipment to the buildings of the En+ holding.