Bit Digital Inc., formerly Golden Bull Ltd, is a bitcoin mining company. The Company is focused on its bitcoin mining business located at its bitcoin mining facilities in Wuhai, Zhundong, Xilinhot and Sichuan China. It is also engaged in car rental business. It intends to rent its cars to both individual and corporate customers. Customers can confirm the time and place for vehicle delivery and rental term through short message service (SMS) messages, phone calls or face-to-face communication.