FHIR IG analytics| Package | aehrc.syndication |
| Resource Type | StructureDefinition |
| Id | StructureDefinition-syndication-link.json |
| FHIR Version | R4 |
| Source | https://build.fhir.org/ig/FHIR/fhir-syndication-ig/StructureDefinition-syndication-link.html |
| URL | https://ontoserver.csiro.au/syndication/StructureDefinition/syndication-link |
| Version | 0.1.0 |
| Status | draft |
| Date | 2026-06-29T05:00:28+00:00 |
| Name | SyndicationLink |
| Title | Terminology Syndication Link |
| Realm | uv |
| Description | An Atom `⟨link⟩` element (RFC 4287 §4.2.7) inside a syndication entry. The core Atom attributes carry the artefact URL and media type; the extension namespaces add file-level integrity and validation metadata. ## Integrity A consumer MUST be able to verify a downloaded artefact's integrity. At least one of `md5Hash` or `sha256Hash` SHOULD be present on every link whose `rel` is `alternate` or `related`. Where both are present, `sha256Hash` is authoritative. The hash is computed over the byte stream that `href` resolves to, exactly as published — without any decompression or content-encoding negotiation. ## Length `length` is the byte count of that same stream. When present, it MUST match what the `href` resolves to. |
| Type | https://ontoserver.csiro.au/syndication/StructureDefinition/syndication-link |
| Kind | logical |
| StructureDefinition | ||
| aehrc.syndication#current | syndication-entry | Terminology Syndication Entry |
No resources found
Note: links and images are rebased to the (stated) source
Generated Narrative: StructureDefinition syndication-link
| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  syndication-link | 0..* | Base | Terminology Syndication Link Instances of this type can be the target of a Reference | |
  rel | 1..1 | code | link relation (alternate | related) | |
| type | 1..1 | code | media type of the linked artefact | |
| href | 1..1 | uri | artefact download URL | |
| length | 0..1 | unsignedInt | artefact size in bytes | |
| md5Hash | 0..1 | string | MD5 hash of the artefact byte stream (32 hex chars) | |
| sha256Hash | 0..1 | string | SHA-256 hash of the artefact byte stream (64 hex chars) | |
 validated | 0..1 | boolean | publisher has re-verified the artefact | |
| Documentation for this format | ||||
FHIR
FHIRsmith{
"resourceType": "StructureDefinition",
"id": "syndication-link",
"text": {
"status": "extensions",
"div": "<!-- snip (see above) -->"
},
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics",
"valueCode": "can-be-target"
}
],
"url": "https://ontoserver.csiro.au/syndication/StructureDefinition/syndication-link",
"version": "0.1.0",
"name": "SyndicationLink",
"title": "Terminology Syndication Link",
"status": "draft",
"date": "2026-06-29T05:00:28+00:00",
"publisher": "Australian e-Health Research Centre",
"contact": [
{
"name": "Australian e-Health Research Centre",
"telecom": [
{
"system": "url",
"value": "https://aehrc.csiro.au"
}
]
},
{
"name": "Michael Lawley",
"telecom": [
{
"system": "email",
"value": "michael.lawley@csiro.au"
}
]
}
],
"description": "An Atom `⟨link⟩` element (RFC 4287 §4.2.7) inside a syndication entry. The\ncore Atom attributes carry the artefact URL and media type; the\nextension namespaces add file-level integrity and validation\nmetadata.\n\n## Integrity\n\nA consumer MUST be able to verify a downloaded artefact's integrity.\nAt least one of `md5Hash` or `sha256Hash` SHOULD be present on every\nlink whose `rel` is `alternate` or `related`. Where both are\npresent, `sha256Hash` is authoritative.\n\nThe hash is computed over the byte stream that `href` resolves to,\nexactly as published — without any decompression or\ncontent-encoding negotiation.\n\n## Length\n\n`length` is the byte count of that same stream. When present, it\nMUST match what the `href` resolves to.",
"fhirVersion": "4.0.1",
"kind": "logical",
"abstract": false,
"type": "https://ontoserver.csiro.au/syndication/StructureDefinition/syndication-link",
"baseDefinition": "http://hl7.org/fhir/StructureDefinition/Base",
"derivation": "specialization",
"snapshot": {
"extension": [
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
"valueString": "4.0.1"
}
],
"element": [
{
"id": "syndication-link",
"path": "syndication-link",
"short": "Terminology Syndication Link",
"definition": "An Atom `⟨link⟩` element (RFC 4287 §4.2.7) inside a syndication entry. The\ncore Atom attributes carry the artefact URL and media type; the\nextension namespaces add file-level integrity and validation\nmetadata.\n\n## Integrity\n\nA consumer MUST be able to verify a downloaded artefact's integrity.\nAt least one of `md5Hash` or `sha256Hash` SHOULD be present on every\nlink whose `rel` is `alternate` or `related`. Where both are\npresent, `sha256Hash` is authoritative.\n\nThe hash is computed over the byte stream that `href` resolves to,\nexactly as published — without any decompression or\ncontent-encoding negotiation.\n\n## Length\n\n`length` is the byte count of that same stream. When present, it\nMUST match what the `href` resolves to.",
"min": 0,
"max": "*",
"base": {
"path": "Base",
"min": 0,
"max": "*"
},
"isModifier": false
},
{
"id": "syndication-link.rel",
"path": "syndication-link.rel",
"short": "link relation (alternate | related)",
"definition": "Link relation. `alternate` denotes the primary artefact; `related` denotes ancillary content (release notes, licence).",
"min": 1,
"max": "1",
"base": {
"path": "syndication-link.rel",
"min": 1,
"max": "1"
},
"type": [
{
"code": "code"
}
]
},
{
"id": "syndication-link.type",
"path": "syndication-link.type",
"short": "media type of the linked artefact",
"definition": "Media type of the linked artefact (e.g. `application/zip`, `application/pdf`, `application/json`, `application/fhir+json`).",
"min": 1,
"max": "1",
"base": {
"path": "syndication-link.type",
"min": 1,
"max": "1"
},
"type": [
{
"code": "code"
}
]
},
{
"id": "syndication-link.href",
"path": "syndication-link.href",
"short": "artefact download URL",
"definition": "artefact download URL",
"min": 1,
"max": "1",
"base": {
"path": "syndication-link.href",
"min": 1,
"max": "1"
},
"type": [
{
"code": "uri"
}
]
},
{
"id": "syndication-link.length",
"path": "syndication-link.length",
"short": "artefact size in bytes",
"definition": "Artefact size in bytes. When present, MUST match the `href` resolution exactly.",
"min": 0,
"max": "1",
"base": {
"path": "syndication-link.length",
"min": 0,
"max": "1"
},
"type": [
{
"code": "unsignedInt"
}
]
},
{
"id": "syndication-link.md5Hash",
"path": "syndication-link.md5Hash",
"short": "MD5 hash of the artefact byte stream (32 hex chars)",
"definition": "`sct:md5Hash`. Lowercase-hex MD5 of the artefact byte stream. 32 hex characters.",
"min": 0,
"max": "1",
"base": {
"path": "syndication-link.md5Hash",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string"
}
]
},
{
"id": "syndication-link.sha256Hash",
"path": "syndication-link.sha256Hash",
"short": "SHA-256 hash of the artefact byte stream (64 hex chars)",
"definition": "`ncts:sha256Hash`. Lowercase-hex SHA-256 of the artefact byte stream. 64 hex characters. When both `md5Hash` and `sha256Hash` are present, `sha256Hash` is authoritative.",
"min": 0,
"max": "1",
"base": {
"path": "syndication-link.sha256Hash",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string"
}
]
},
{
"id": "syndication-link.validated",
"path": "syndication-link.validated",
"short": "publisher has re-verified the artefact",
"definition": "`onto:validated`. Asserts that the publisher has re-verified the artefact at `href` against `length` and any hash since it was last published. Absence is equivalent to `false`.",
"min": 0,
"max": "1",
"base": {
"path": "syndication-link.validated",
"min": 0,
"max": "1"
},
"type": [
{
"code": "boolean"
}
]
}
]
},
"differential": {
"element": [
{
"id": "syndication-link",
"path": "syndication-link",
"short": "Terminology Syndication Link",
"definition": "An Atom `⟨link⟩` element (RFC 4287 §4.2.7) inside a syndication entry. The\ncore Atom attributes carry the artefact URL and media type; the\nextension namespaces add file-level integrity and validation\nmetadata.\n\n## Integrity\n\nA consumer MUST be able to verify a downloaded artefact's integrity.\nAt least one of `md5Hash` or `sha256Hash` SHOULD be present on every\nlink whose `rel` is `alternate` or `related`. Where both are\npresent, `sha256Hash` is authoritative.\n\nThe hash is computed over the byte stream that `href` resolves to,\nexactly as published — without any decompression or\ncontent-encoding negotiation.\n\n## Length\n\n`length` is the byte count of that same stream. When present, it\nMUST match what the `href` resolves to."
},
{
"id": "syndication-link.rel",
"path": "syndication-link.rel",
"short": "link relation (alternate | related)",
"definition": "Link relation. `alternate` denotes the primary artefact; `related` denotes ancillary content (release notes, licence).",
"min": 1,
"max": "1",
"type": [
{
"code": "code"
}
]
},
{
"id": "syndication-link.type",
"path": "syndication-link.type",
"short": "media type of the linked artefact",
"definition": "Media type of the linked artefact (e.g. `application/zip`, `application/pdf`, `application/json`, `application/fhir+json`).",
"min": 1,
"max": "1",
"type": [
{
"code": "code"
}
]
},
{
"id": "syndication-link.href",
"path": "syndication-link.href",
"short": "artefact download URL",
"definition": "artefact download URL",
"min": 1,
"max": "1",
"type": [
{
"code": "uri"
}
]
},
{
"id": "syndication-link.length",
"path": "syndication-link.length",
"short": "artefact size in bytes",
"definition": "Artefact size in bytes. When present, MUST match the `href` resolution exactly.",
"min": 0,
"max": "1",
"type": [
{
"code": "unsignedInt"
}
]
},
{
"id": "syndication-link.md5Hash",
"path": "syndication-link.md5Hash",
"short": "MD5 hash of the artefact byte stream (32 hex chars)",
"definition": "`sct:md5Hash`. Lowercase-hex MD5 of the artefact byte stream. 32 hex characters.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
]
},
{
"id": "syndication-link.sha256Hash",
"path": "syndication-link.sha256Hash",
"short": "SHA-256 hash of the artefact byte stream (64 hex chars)",
"definition": "`ncts:sha256Hash`. Lowercase-hex SHA-256 of the artefact byte stream. 64 hex characters. When both `md5Hash` and `sha256Hash` are present, `sha256Hash` is authoritative.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
]
},
{
"id": "syndication-link.validated",
"path": "syndication-link.validated",
"short": "publisher has re-verified the artefact",
"definition": "`onto:validated`. Asserts that the publisher has re-verified the artefact at `href` against `length` and any hash since it was last published. Absence is equivalent to `false`.",
"min": 0,
"max": "1",
"type": [
{
"code": "boolean"
}
]
}
]
}
}