{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-11T07:46:04Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 1,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-05T16:30:00Z",
      "ingestedAt": "2026-10-05T13:23:30+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "revisions": [
      {
        "at": "2026-10-06T22:58:03+00:00",
        "engine": "codex",
        "fields": [
          "definition",
          "distinguishing_features"
        ],
        "answering_review": "ecb6df8580e74b4124aa7c04fc1298196bd4744f32cebac1232d70253ba16632"
      }
    ],
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:32+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q7366",
    "registryId": "vr.tr.song",
    "name": "song",
    "version": "0.2.0-wave.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "INF.MED"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q7366/",
  "model": {
    "registry_id": "vr.tr.song",
    "name": "song",
    "purpose": "Let an agent handle songs by title, writers, performers, versions and rights, and quote lyrics only within copyright limits.",
    "definition": "A musical composition for voice or voices, with melody and with or without lyrics, performed alone or with instruments, in countless genres and traditions; recordings may exist in several versions.",
    "what_it_is_for": "Expression, storytelling, worship, protest, celebration and entertainment.",
    "affordances": [
      "identify title, writers and performers",
      "find recordings through legal channels",
      "license performance or use",
      "learn and sing it"
    ],
    "distinguishing_features": [
      "Songs may use sung words or wordless vocalization.",
      "The composition is distinct from a recording.",
      "A song may have many versions and covers.",
      "Lyrics are protected by copyright."
    ],
    "appearance": "Heard as vocal music; written as lyrics and sheet music.",
    "visual_identification": [
      "Title, songwriter and performer credits",
      "Versions such as live or remix",
      "Genres such as ballad or narrative song"
    ],
    "physical_properties": [],
    "families_and_kinds": [
      "popular songs",
      "folk songs and ballads",
      "art songs",
      "hymns and religious songs",
      "protest and national songs"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "musical work",
        "why": "category"
      },
      {
        "relation": "is written by",
        "target": "songwriter",
        "why": "creator"
      },
      {
        "relation": "is performed by",
        "target": "singer",
        "why": "performer"
      },
      {
        "relation": "is recorded as",
        "target": "recording",
        "why": "release"
      }
    ],
    "identifiers": [
      {
        "scheme": "ISWC",
        "value_or_pattern": "International Standard Musical Work Code",
        "note": "composition"
      },
      {
        "scheme": "ISRC",
        "value_or_pattern": "International Standard Recording Code",
        "note": "recording"
      }
    ],
    "standards_and_regulation": [
      "Copyright law",
      "Collective management organisations for licensing",
      "Performance licensing for public venues"
    ],
    "failure_modes_and_hazards": [
      "Reproducing full lyrics",
      "Misattributing writers",
      "Confusing versions"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Describe songs, their writers and performers with sources.",
        "Help a person learn or practise singing a song they are entitled to use."
      ],
      "must_not": [
        "Reproduce copyrighted lyrics or recordings without permission.",
        "Present a generated song as by a real artist or imitate their voice without consent.",
        "Misattribute authorship of songs.",
        "Use sacred or traditional songs outside their permitted context."
      ],
      "requires_human": [
        "Releasing or licensing a song on someone's behalf."
      ]
    },
    "ethics": {
      "considerations": [
        "Songwriters depend on credit and royalties.",
        "Traditional and sacred songs belong to communities."
      ],
      "affected_parties": [
        "Songwriters and performers",
        "Communities with traditional songs",
        "Listeners"
      ]
    },
    "owners": {
      "steward": "The songwriter and publisher hold the rights; collecting societies manage royalties.",
      "master_systems": [
        "Collecting society works registers",
        "ISWC registry"
      ]
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q7366: song",
      "url": "https://www.wikidata.org/wiki/Q7366",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Song",
      "url": "https://en.wikipedia.org/wiki/Song",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "identity",
        "name": "Identity",
        "description": "Which song.",
        "rationale": "Titles repeat.",
        "layers": [
          {
            "id": "credits",
            "name": "Credits",
            "description": "Writers and performers.",
            "findings": [
              {
                "id": "credits-finding",
                "name": "Credits",
                "description": "Credits.",
                "questions": [
                  {
                    "text": "Who wrote and performed the song?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which identifier resolves it?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "versions",
            "name": "Versions",
            "description": "Recordings.",
            "findings": [
              {
                "id": "versions-finding",
                "name": "Versions",
                "description": "Versions.",
                "questions": [
                  {
                    "text": "Which version or recording is meant?",
                    "kind": "definition"
                  },
                  {
                    "text": "When was it released?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "music",
        "name": "Music",
        "description": "Form and genre.",
        "rationale": "Form shapes the song.",
        "layers": [
          {
            "id": "genre",
            "name": "Genre",
            "description": "Style.",
            "findings": [
              {
                "id": "genre-finding",
                "name": "Genre",
                "description": "Genre.",
                "questions": [
                  {
                    "text": "What genre or tradition is it?",
                    "kind": "definition"
                  },
                  {
                    "text": "What is its structure?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          },
          {
            "id": "learning",
            "name": "Learning",
            "description": "Sheet music.",
            "findings": [
              {
                "id": "learning-finding",
                "name": "Learning",
                "description": "Learning.",
                "questions": [
                  {
                    "text": "Where can licensed sheet music be found?",
                    "kind": "action"
                  },
                  {
                    "text": "What key is it in?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "rights",
        "name": "Rights",
        "description": "Copyright.",
        "rationale": "Rights govern use.",
        "layers": [
          {
            "id": "licensing",
            "name": "Licensing",
            "description": "Use.",
            "findings": [
              {
                "id": "licensing-finding",
                "name": "Licensing",
                "description": "Licensing.",
                "questions": [
                  {
                    "text": "Which licence is needed for this use?",
                    "kind": "boundary"
                  },
                  {
                    "text": "Which organisation grants it?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "lyrics",
            "name": "Lyrics",
            "description": "Quotation limits.",
            "findings": [
              {
                "id": "lyrics-finding",
                "name": "Lyrics",
                "description": "Lyric quotation.",
                "questions": [
                  {
                    "text": "Is the request asking for full lyrics?",
                    "kind": "boundary"
                  },
                  {
                    "text": "Where can licensed lyrics be read?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "context",
        "name": "Context",
        "description": "Meaning.",
        "rationale": "Songs carry meaning.",
        "layers": [
          {
            "id": "history",
            "name": "History",
            "description": "Origin.",
            "findings": [
              {
                "id": "history-finding",
                "name": "History",
                "description": "History.",
                "questions": [
                  {
                    "text": "What is the song history, according to reliable sources?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Are popular stories about it true?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "reception",
            "name": "Reception",
            "description": "Charts and impact.",
            "findings": [
              {
                "id": "reception-finding",
                "name": "Reception",
                "description": "Reception.",
                "questions": [
                  {
                    "text": "How was it received?",
                    "kind": "provenance"
                  },
                  {
                    "text": "From which chart source?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should songs be instances with ISWC codes?",
    "How should recordings be linked?",
    "How should folk songs without authors be credited?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}