Providing an external credibility infrastructure for artificial intelligence systems; providing non-downloadable software for identity verification, authority resolution, and machine-readable credibility signals; platform as a service (PaaS) featuring software for verifying, structuring, and distributing trusted data across AI systems, autonomous agents, and decentralized computing environments; providing online non-downloadable software for use in evaluating, validating, and resolving real-world entities and information for artificial intelligence applications; providing online non-downloadable software infrastructure for enabling artificial intelligence systems to determine verified identity, authority, and trust across multiple platforms and environments