Providing on-line non-downloadable software for background investigation services, namely, software for processing and managing background investigations, performed by clients; Providing on-line non-downloadable software for o providing access to and for conducting background investigations, pre-employment background screening, and security clearance background investigations, and for verification of personal and professional identity as part of employment and credentialling background investigations; Software as a service (SAAS) services featuring software for verifying medical professional credentials; Software as a service (SAAS) services featuring software for verifying the credentials of doctors and other medical professionals for public safety purposes; Software as a service (SAAS) services featuring software for decentralized credential verification, identity authentication, and compliance automation; Platform as a service (PAAS) featuring computer software platforms for decentralized credential verification, identity authentication, and compliance automation