Software as a service (SaaS) comprising a blockchain component that facilitates payments, contracts, distribution, finances, regulatory compliance, exporting, importing, supply chain services and fraud prevention; Providing temporary use of online non-downloadable software for use in electronically trading, storing, sending, receiving, accepting and transmitting digital currency, and managing digital currency payment and exchange transactions; Software as a service (SaaS) comprising a blockchain component that manages, authenticates and provides access to digital currency tokens; Computer security services in the nature of providing authentication, issuance, validation and revocation of digital certificates; User authentication services using technology for e-commerce transactions