WHO SMART Trust
1.1.6 - CI Build

WHO SMART Trust, published by WHO. This guide is not an authorized publication; it is the continuous build for version 1.1.6 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/WorldHealthOrganization/smart-trust/tree/tng-additional-context-jsonld and changes regularly. See the Directory of published versions

## Logical Model: Health Certificate

Official URL: http://smart.who.int/trust/StructureDefinition/HCert | Version: 1.1.6
Active as of 2026-01-22 | Computable Name: HCert

Logical Model for the HCERT

Usages:

- Use this Logical Model: CBOR Web Token (CWT) Payload (Common)

You can also check for usages in the FHIR IG Statistics

### Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

- Key Elements Table
- Differential Table
- Snapshot Table
- Statistics/References
- All

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
HCert |  | 0..* | Base | Health Certificate
1 |  | 0..1 | HCertDCC | HCERT EU DCC
3 |  | 0..* | DDCCCoreDataSetVS | Vaccination Core Data Set claim
4 |  | 0..* | DDCCCoreDataSetTR | Test Result Core Data Set claim
5 |  | 0..* | string | VHL
-6 |  | 0..* | DVC | DVC
Documentation for this format

This structure is derived from Base

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
HCert |  | 0..* | Base | Health Certificate
1 |  | 0..1 | HCertDCC | HCERT EU DCC
3 |  | 0..* | DDCCCoreDataSetVS | Vaccination Core Data Set claim
4 |  | 0..* | DDCCCoreDataSetTR | Test Result Core Data Set claim
5 |  | 0..* | string | VHL
-6 |  | 0..* | DVC | DVC
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
HCert |  | 0..* | Base | Health Certificate
1 |  | 0..1 | HCertDCC | HCERT EU DCC
3 |  | 0..* | DDCCCoreDataSetVS | Vaccination Core Data Set claim
4 |  | 0..* | DDCCCoreDataSetTR | Test Result Core Data Set claim
5 |  | 0..* | string | VHL
-6 |  | 0..* | DVC | DVC
Documentation for this format

This structure is derived from Base

Summary

Structures

This structure refers to these other structures:

- DDCC Core Data Set Logical Model for Vaccination Status (http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSetVS)
- DDCC Core Data Set Logical Model for Test Result (http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSetTR)

Key Elements View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
HCert |  | 0..* | Base | Health Certificate
1 |  | 0..1 | HCertDCC | HCERT EU DCC
3 |  | 0..* | DDCCCoreDataSetVS | Vaccination Core Data Set claim
4 |  | 0..* | DDCCCoreDataSetTR | Test Result Core Data Set claim
5 |  | 0..* | string | VHL
-6 |  | 0..* | DVC | DVC
Documentation for this format

Differential View

This structure is derived from Base

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
HCert |  | 0..* | Base | Health Certificate
1 |  | 0..1 | HCertDCC | HCERT EU DCC
3 |  | 0..* | DDCCCoreDataSetVS | Vaccination Core Data Set claim
4 |  | 0..* | DDCCCoreDataSetTR | Test Result Core Data Set claim
5 |  | 0..* | string | VHL
-6 |  | 0..* | DVC | DVC
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
HCert |  | 0..* | Base | Health Certificate
1 |  | 0..1 | HCertDCC | HCERT EU DCC
3 |  | 0..* | DDCCCoreDataSetVS | Vaccination Core Data Set claim
4 |  | 0..* | DDCCCoreDataSetTR | Test Result Core Data Set claim
5 |  | 0..* | string | VHL
-6 |  | 0..* | DVC | DVC
Documentation for this format

This structure is derived from Base

Summary

Structures

This structure refers to these other structures:

- DDCC Core Data Set Logical Model for Vaccination Status (http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSetVS)
- DDCC Core Data Set Logical Model for Test Result (http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSetTR)

Other representations of profile: CSV, Excel