Providing temporary use of on-line non-downloadable software for managing and verifying pharmaceutical drug prescriptions and associated data transactions utilizing blockchain-based platforms; Providing temporary use of on-line non-downloadable software for managing pharmaceutical drug prescriptions within an end-to-end network of prescription-prescribers and prescription-fillers; Providing temporary use of on-line non-downloadable software for the use of distributed ledger technology to control the prescription and fulfillment of controlled substance prescriptions; Providing temporary use of on-line non-downloadable software for controlling access to controlled substance prescriptions; Providing temporary use of on-line non-downloadable software for transferring and managing virtual tokens within the medical and pharmaceutical fields; Providing temporary use of on-line non-downloadable software for for accessing a distributed ledger data structure for use in the control of pharmaceutical drug prescriptions; Application service provider (ASP) featuring software for use managing and verifying pharmaceutical drug prescriptions and associated data transactions utilizing blockchain-based platforms; Application service provider (ASP) featuring software for use managing pharmaceutical drug prescriptions within an end-to-end network of prescription-prescribers and prescription-fillers; Application service provider (ASP) featuring software for use controlling access to controlled substance prescriptions; Application service provider (ASP) featuring software for use transferring and managing virtual tokens within the medical and pharmaceutical fields; Application service provider (ASP) featuring software for use the use of distributed ledger technology to control the prescription and fulfillment of controlled substance prescriptions; Application service provider (ASP) featuring software for use accessing a distributed ledger data structure for use in the control of pharmaceutical drug prescriptions; Software as a service (SAAS) services featuring software for managing and verifying pharmaceutical drug prescriptions and associated data transactions utilizing blockchain-based platforms; Software as a service (SAAS) services featuring software for managing pharmaceutical drug prescriptions within an end-to-end network of prescription-prescribers and prescription-fillers; Software as a service (SAAS) services featuring software for the use of distributed ledger technology to control the prescription and fulfillment of controlled substance prescriptions; Software as a service (SAAS) services featuring software for controlling access to controlled substance prescriptions; Software as a service (SAAS) services featuring software for transferring and managing virtual tokens within the medical and pharmaceutical fields; Software as a service (SAAS) services featuring software for accessing a distributed ledger data structure for use in the control of pharmaceutical drug prescriptions