PDF · CDA · FHIR Composition/DocumentReference · EHR portal · HIE · records systems
UD complements healthcare exchange; it does not caricature or replace it.
| Capability | Assessment | Boundary |
|---|---|---|
| Structured clinical semantics | INCUMBENT CURRENTLY STRONGER | FHIR and CDA provide mature healthcare-specific models and implementation ecosystems. |
| Portable exact-state verification | UD ADVANTAGE | UDS is designed to carry independently checkable final-state evidence with the document. |
| Provenance | BOTH | FHIR includes a Provenance resource; UD proposes document-bound provenance that travels with a human-readable artifact. |
| EHR workflow and clinical integration | INCUMBENT CURRENTLY STRONGER | EHRs, HIEs and clinical portals own production clinical workflows and integrations. |
| Offline human-readable portability | UD ADVANTAGE | BrowserCarrier is a zero-install, offline-readable package. |
| Patient-facing grounded explanation | UD ADVANTAGE | Local Talk can explain contained text with citations and refuse unsupported questions. |
| Production PHI environment | UD PLANNED | No approved production PHI handling or EHR integration is claimed. |