NCPI FHIR Implementation Guide v2 - Local Development build (v0.1.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
Extension: Provides a list of hashes for confirming file transfers
| Official URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/hash-extension | Version: 0.1.0 | |||
| Draft as of 2025-03-24 | Computable Name: HashExtension | |||
Provides a list of hashes for confirming file transfers
Context of Use
-
Element ID:
DocumentReference
This extension may be used on the following element(s):
Usage info
Usage:
- Use this Extension: NCPI File
- Examples for this Extension: DocumentReference/GF-6BAD9S7D and DocumentReference/GSS123456-01-010-SG-2
Formal Views of Extension Content
Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  Extension |
0..* | Extension | Provides a list of hashes for confirming file transfers | |
  extension |
2..* | Extension | Extension | |
  Slices for extension |
Content/Rules for all slices | |||
   extension:hash-value |
1..1 | string | Value of hashing the file URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/hash-value | |
 extension:hash-type |
1..1 | code | Algorithm used to calculate the hash (and size, where applicable) URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/hash-type | |
| url |
1..1 | uri | "https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/hash-extension" | |
 value[x] |
0..0 | |||
| Documentation for this format | ||||
Other representations of profile: CSV, Excel, Schematron
Constraints
| Id | Grade | Path(s) | Details | Requirements |
| ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children unless an empty Parameters resource : hasValue() or (children().count() > id.count()) or $this is Parameters | |
| ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both : extension.exists() != value.exists() |