There is disclosed a gaming machine. The gaming machine includes an electronic arrangement configured to receive digital currency data from an electronic device that is remote to the gaming machine. The digital currency data represents a store of value of a digital currency. The gaming machine further includes a data transfer arrangement configured to transfer the digital currency data via a data network to a data storage arrangement that is remote to the gaming machine. The gaming machine further includes a data recording arrangement configured to create record data representing a record of a unique attribute of the digital currency data.