id: https://nde.nl/ontology/hc/class/DigitalPlatformUserIdentifier
name: digital_platform_user_identifier_class
title: Digital Platform User Identifier Class
prefixes:
  linkml: https://w3id.org/linkml/
  hc: https://nde.nl/ontology/hc/
  schema: http://schema.org/
  dcterms: http://purl.org/dc/terms/
  foaf: http://xmlns.com/foaf/0.1/
  as: https://www.w3.org/ns/activitystreams#
imports:
  - linkml:types
  - ../slots/has_type
  - ../slots/has_url
  - ../metadata
  - ../slots/identified_by
  - ../slots/has_label
default_prefix: hc
classes:
  DigitalPlatformUserIdentifier:
    is_a: Identifier
    class_uri: hc:DigitalPlatformUserIdentifier
    description: 'Identifier for a user account on a digital platform (YouTube, Twitter,
      etc.). **PURPOSE**: Structured representation of platform-specific user identifiers,
      such as YouTube channel IDs, Twitter handles, or Instagram usernames. Replaces
      simple string channel_id slots with typed identifiers. **DESIGN RATIONALE**:
      Created per slot_fixes.yaml migration from `comment_author_channel_id` string
      to structured `has_author` + `Author` with `identified_by` +
      `DigitalPlatformUserIdentifier` for platform user identification. **PLATFORM
      IDENTIFIER TYPES**: | Platform | Identifier Type | Example | |----------|-----------------|---------|
      | YouTube | Channel ID | UC1234abcdef | | Twitter/X | User ID | 12345678 | |
      Instagram | Username | @museum_account | | Facebook | Page ID | 123456789 |
      | LinkedIn | Company ID | heritage-foundation | | TikTok | User ID | museum_official
      | **ONTOLOGY ALIGNMENT**: | Ontology | Class/Property | Usage | |----------|----------------|-------|
      | **Dublin Core** | `dcterms:identifier` | Base identifier semantics | | **Schema.org**
      | `schema:identifier` | Web-standard identifier | | **FOAF** | `foaf:OnlineAccount`
      | Online account modeling | | **Activity Streams** | `as:Person` | Social media
      activity | '
    exact_mappings:
    - foaf:OnlineAccount
    close_mappings:
    - schema:identifier
    related_mappings:
    - dcterms:identifier
    - as:actor
    slot_usage:
      ifabsent: string(digital_platform_user_id)
    examples:
    - value:
        platform_type: youtube
        profile_url: https://www.youtube.com/channel/UCsT0YIqwnpJCM-mx7-gSA4Q
    - value:
        platform_type: twitter
        profile_url: https://twitter.com/rijksmuseum
    - value:
        platform_type: youtube
    comments:
    - Created per slot_fixes.yaml migration from comment_author_channel_id (2026-01-22)
    - Extends Identifier class with platform-specific fields
    - Use for identifying users/authors on digital platforms
    - Supports YouTube, Twitter, Instagram, Facebook, LinkedIn, TikTok
    see_also:
    - http://xmlns.com/foaf/0.1/OnlineAccount
    - https://www.w3.org/ns/activitystreams
    - https://developers.google.com/youtube/v3/docs/channels
    annotations:
      specificity_score: 0.7
      specificity_rationale: Specific to digital platform user identification contexts.
      custodian_types: '[''*'']'
    slots:
    - has_type
    - has_url