id.sifa.profile.presentation

sifa.id

Schema Diff

+2 -0

From

CID
bafyreidre23aepi...
Indexed At
2026-08-06 14:52 UTC
View this version

To

CID
bafyreiape4s3uph...
Indexed At
2026-08-07 11:35 UTC
View this version

Compatibility Analysis

Backward Compatible

No changes detected.

1 1
{
2 2
  "id": "id.sifa.profile.presentation",
3 3
  "defs": {
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    "main": {
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      "key": "tid",
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      "type": "record",
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      "record": {
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        "type": "object",
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        "required": [
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          "title",
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          "createdAt"
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        ],
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        "properties": {
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          "links": {
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            "type": "array",
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            "items": {
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              "ref": "id.sifa.defs#presentationLink",
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              "type": "ref"
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            },
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            "maxLength": 20,
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            "description": "Canonical links for this content, such as slides or a recording."
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          },
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          "title": {
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            "type": "string",
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            "maxLength": 3000,
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            "minLength": 1,
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            "description": "Title of the presentation.",
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            "maxGraphemes": 300,
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            "x-skos:exactMatch": [
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              "dcterms:title",
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              "schema:name"
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            ]
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          },
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          "duration": {
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            "ref": "#duration",
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            "type": "ref",
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            "description": "Typical length of the presentation, a fixed value or a range, in minutes.",
38 +
            "x-skos:note": "The lexicon models a range; schema:timeRequired is a single ISO 8601 duration.",
38 39
            "x-skos:narrowMatch": [
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              "schema:timeRequired"
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            ]
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          },
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          "createdAt": {
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            "type": "string",
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            "format": "datetime",
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            "description": "Client-declared timestamp when this record was originally created."
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          },
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          "coverImage": {
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            "type": "blob",
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            "accept": [
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              "image/png",
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              "image/jpeg",
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              "image/webp"
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            ],
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            "maxSize": 2000000,
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            "description": "Optional cover image for the presentation. Rendered as the talk-page hero and OpenGraph image. Max 2 MB, PNG, JPEG, or WebP.",
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            "x-skos:exactMatch": [
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              "schema:image",
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              "foaf:depiction"
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            ]
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          },
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          "writeupRef": {
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            "ref": "id.sifa.defs#externalRecordRef",
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            "type": "ref",
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            "description": "Optional reference to a long-form write-up of this presentation (a pub.leaflet.document or site.standard.document holding video, transcript, or article).",
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            "x-skos:closeMatch": [
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              "dcterms:isReferencedBy",
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              "schema:subjectOf"
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            ]
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          },
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          "description": {
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            "type": "string",
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            "maxLength": 50000,
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            "description": "Description or abstract of the presentation.",
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            "maxGraphemes": 5000,
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            "x-skos:exactMatch": [
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              "bibo:abstract",
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              "schema:abstract"
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            ]
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          },
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          "intendedAudiences": {
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            "type": "array",
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            "items": {
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              "type": "string",
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              "maxLength": 1000,
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              "maxGraphemes": 100
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            },
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            "maxLength": 20,
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            "description": "Intended audiences for this presentation, open text (e.g. 'Engineering leaders', 'Beginners').",
89 90
            "x-skos:closeMatch": [
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              "schema:audience"
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            ]
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          }
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        }
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      },
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      "description": "Record representing a single reusable presentation (the content), distinct from the occasions on which it is delivered.",
97 +
      "x-skos:note": "Neither term carries the \"reusable, deliverable more than once\" semantics of the Sifa record.",
96 98
      "x-skos:closeMatch": [
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        "bibo:Slideshow",
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        "schema:PresentationDigitalDocument"
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      ]
100 102
    },
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    "duration": {
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      "type": "object",
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      "required": [
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        "minMinutes"
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      ],
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      "properties": {
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        "maxMinutes": {
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          "type": "integer",
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          "minimum": 1,
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          "description": "Upper bound in minutes when the length is offered as a range. Omit for a fixed length."
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        },
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        "minMinutes": {
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          "type": "integer",
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          "minimum": 1,
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          "description": "Length in minutes, or the lower bound when the length is offered as a range."
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        }
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      },
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      "description": "A presentation length in minutes: a fixed value (minMinutes only) or a range (minMinutes to maxMinutes)."
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    }
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  },
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  "$type": "com.atproto.lexicon.schema",
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  "lexicon": 1,
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  "description": "A reusable presentation: the content a person presents (a talk, workshop, poster, or demo), independent of any single occasion on which it is delivered. Delivered at one or more id.sifa.profile.presentationDelivery occasions."
124 126
}

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