Computer hardware and downloadable software for interoperating with third party blockchain and distributed ledger databases and systems to facilitate transactions; Computer hardware and downloadable software for secure transmission of digital information over the internet, as well as over other modes of communication between computing devices; Computer hardware and downloadable software for user authentication and identity management information security; Computer hardware and downloadable software for ledger identity management and user authentication, user and payment authorization, and access controls for physical premises and computing resources; Downloadable software development tools for implementing digital identity and cryptographic security and information transmitted over the internet; Downloadable computer software for use as a digital wallet; Downloadable software in the nature of a mobile application for facilitating blockchain and distributed ledger transactions via telecommunications systems or global networks, facilitating cryptographic security and cryptographic electronic transmissions, and automating processes for authentication of party identity in connection with the issuance and management of cryptographic keys used for user authentication and encryption of digital communications in an electronic transaction or communication over the internet and other computer networks; Downloadable computer software development tools