Downloadable computer software and non-downloadable computer software for providing an interface between an internet browser and distributed computing platforms; Computer software for accessing distributed computing platforms; Computer software that provides a user interface for managing digital identities and for signing digital transactions; Computer software for securing digital identities; Downloadable applications for implementing digital transactions and for managing digital identities; Computer application software used to manage and verify digital identities and associated data transactions utilizing digital platforms; Computer software for encryption; Software for execution and management of secure data transactions