Computer software development; Computer programming; Computer software design; Research and development and consultation related thereto in the field of cryptocurrency and virtual currency based on blockchain; Design, development, and implementation of software solutions for digital currency security, including but not limited to bitcoin currency and transactions involving bitcoin currency; Consultancy services related to digital currency transactions software, including but not limited to transactions involving bitcoin currency; Providing a secure, web-based service featuring technology for use in electronically trading, storing, sending, receiving, accepting and transmitting digital currency, and managing digital currency payment and exchange transactions remotely access, send, receive, store, and manage digital currency; Application service provider featuring application programming interface (API) software for integration of financial transactions into websites and mobile applications; Providing temporary use of non-downloadable software for use in trading cryptocurrency, digital currency, virtual currency, digital tokens; providing non-downloadable computer software for use in blockchain technology; software as a service (SAAS) services featuring software for recordation and settlement of trading related to cryptocurrency, digital currency, virtual currency, digital tokens