Architecture · Five Layers · Open Standards
Technical Stack
The trust stack for B2B healthcare voice AI.
Note: NHID-Clinical is an early-stage open proposal by Brianna Baynard. It is not an accredited standard or regulatory requirement.
The Trust Stack for B2B Healthcare Voice
STIR/SHAKEN verifies the phone number. NHID-Clinical verifies the AI agent behind the call and what it is authorized to do.
The Five-Layer Stack
| Layer | Purpose | Key Standards | NHID Role |
|---|---|---|---|
| Layer 0: NPI Gap | Public NPI spoofing risk | NPPES | IDG-01 + NHID-Auth v2 |
| Layer 1: STIR/SHAKEN | Carrier number authentication | RFC 8224 | Complementary |
| Layer 2: NHID-Clinical v1.3 | Behavioral disclosure baseline | Voluntary proposal | Core (IDG-01, DBC-01, EIT-01, ATR-01) |
| Layer 3: NHID-Auth v2 | Cryptographic delegation | Ed25519, DPoP | Authorization proof |
| Layer 4: FHIR AuditEvent | Healthcare-native logging | HL7 FHIR R4 | ATR-01 compliance |