{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-11T09:30:48Z",
    "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": "2026-10-05T13:24:01+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:30+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q34379",
    "registryId": "vr.tr.musical-instrument",
    "name": "musical instrument",
    "version": "0.2.0-wave.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.OBJ"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q34379/",
  "model": {
    "registry_id": "vr.tr.musical-instrument",
    "name": "musical instrument",
    "purpose": "Let an agent handle musical instruments by classification, construction, playing, care, hire and trade rules.",
    "definition": "A device created or adapted to make musical sounds, classified in the Hornbostel-Sachs system as idiophones, membranophones, chordophones, aerophones and electrophones.",
    "what_it_is_for": "Making music.",
    "affordances": [
      "identify and classify instruments",
      "choose an instrument and size for a learner",
      "maintain and tune instruments",
      "check travel and trade rules for protected materials"
    ],
    "distinguishing_features": [
      "Designed to make musical sound",
      "Classified by sound production",
      "Crafted from wood, metal, skin or electronics",
      "Needs regular care"
    ],
    "appearance": "Enormously varied: strings, tubes, drums, keys and electronic units.",
    "visual_identification": [
      "How the sound is produced decides the class",
      "Maker labels and serial numbers",
      "Toy instruments are a related category"
    ],
    "physical_properties": [
      {
        "quantity": "Overall dimensions",
        "unit": "mm",
        "typical_range": "",
        "note": "Measure the maximum length, width and height in the stated playing or storage configuration."
      },
      {
        "quantity": "Instrument mass",
        "unit": "kg",
        "typical_range": "",
        "note": "Weigh the instrument and specify whether detachable accessories and supports are included."
      },
      {
        "quantity": "Acoustic output level",
        "unit": "dB SPL",
        "typical_range": "",
        "note": "Measure sound pressure level at a stated distance with the playing conditions and frequency weighting recorded."
      }
    ],
    "families_and_kinds": [
      "idiophones",
      "membranophones",
      "chordophones",
      "aerophones",
      "electrophones"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "sound generator",
        "why": "category"
      },
      {
        "relation": "is used in",
        "target": "music",
        "why": "practice"
      },
      {
        "relation": "is classified by",
        "target": "Hornbostel-Sachs",
        "why": "system"
      },
      {
        "relation": "is made by",
        "target": "luthier and instrument maker",
        "why": "craft"
      }
    ],
    "identifiers": [
      {
        "scheme": "Hornbostel-Sachs number",
        "value_or_pattern": "hierarchical code",
        "note": "classification"
      }
    ],
    "standards_and_regulation": [
      "CITES rules for rosewood, ivory and tortoiseshell",
      "Airline cabin rules for instruments",
      "Noise at work regulations for musicians"
    ],
    "failure_modes_and_hazards": [
      "Hearing damage from loud playing",
      "Seizure of instruments with undocumented protected materials",
      "Damage from humidity and temperature"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Describe instruments and their classification.",
        "Help players with tuning, care and practice."
      ],
      "must_not": [
        "Trade instruments made from protected species, such as ivory or rare woods, without permits.",
        "Remove or damage instruments of cultural or sacred significance.",
        "Misrepresent an instrument's maker, age or provenance."
      ],
      "requires_human": [
        "Selling or exporting a historic or culturally significant instrument."
      ]
    },
    "ethics": {
      "considerations": [
        "Some instruments are sacred to their communities.",
        "Materials such as ivory and rare woods are protected by law."
      ],
      "affected_parties": [
        "Musicians",
        "Communities with sacred instruments",
        "Protected species"
      ]
    },
    "owners": {
      "steward": "The person who keeps it; museums and communities hold heritage instruments.",
      "master_systems": [
        "Wildlife trade permits under international trade conventions"
      ]
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q34379: musical instrument",
      "url": "https://www.wikidata.org/wiki/Q34379",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Musical instrument",
      "url": "https://en.wikipedia.org/wiki/Musical_instrument",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "classification",
        "name": "Classification",
        "description": "Which instrument.",
        "rationale": "Classification helps.",
        "layers": [
          {
            "id": "class",
            "name": "Class",
            "description": "Hornbostel-Sachs.",
            "findings": [
              {
                "id": "class-finding",
                "name": "Class",
                "description": "Instrument class.",
                "questions": [
                  {
                    "text": "How does this instrument produce sound?",
                    "kind": "definition"
                  },
                  {
                    "text": "What is its Hornbostel-Sachs class?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          },
          {
            "id": "maker",
            "name": "Maker",
            "description": "Origin.",
            "findings": [
              {
                "id": "maker-finding",
                "name": "Maker",
                "description": "Maker and origin.",
                "questions": [
                  {
                    "text": "Who made it and when?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is a label or serial number present?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "playing",
        "name": "Playing",
        "description": "Learning.",
        "rationale": "Learners need fit.",
        "layers": [
          {
            "id": "choice",
            "name": "Choice",
            "description": "Size and type.",
            "findings": [
              {
                "id": "choice-finding",
                "name": "Choice",
                "description": "Choosing an instrument.",
                "questions": [
                  {
                    "text": "Which size or type suits this learner?",
                    "kind": "action"
                  },
                  {
                    "text": "Is hiring before buying possible?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "hearing",
            "name": "Hearing",
            "description": "Protection.",
            "findings": [
              {
                "id": "hearing-finding",
                "name": "Hearing",
                "description": "Hearing protection.",
                "questions": [
                  {
                    "text": "How loud is the instrument in practice?",
                    "kind": "measurement"
                  },
                  {
                    "text": "Is musician hearing protection advisable?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "care",
        "name": "Care",
        "description": "Maintenance.",
        "rationale": "Instruments need care.",
        "layers": [
          {
            "id": "maintenance",
            "name": "Maintenance",
            "description": "Tuning and servicing.",
            "findings": [
              {
                "id": "maintenance-finding",
                "name": "Maintenance",
                "description": "Maintenance.",
                "questions": [
                  {
                    "text": "How often does it need tuning or servicing?",
                    "kind": "measurement"
                  },
                  {
                    "text": "Who can service it?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "environment",
            "name": "Environment",
            "description": "Humidity.",
            "findings": [
              {
                "id": "environment-finding",
                "name": "Environment",
                "description": "Storage conditions.",
                "questions": [
                  {
                    "text": "What humidity and temperature should it be kept in?",
                    "kind": "measurement"
                  },
                  {
                    "text": "Is a case or humidifier needed?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "rules",
        "name": "Rules",
        "description": "Travel and trade.",
        "rationale": "Some materials are protected.",
        "layers": [
          {
            "id": "cites",
            "name": "CITES",
            "description": "Protected materials.",
            "findings": [
              {
                "id": "cites-finding",
                "name": "CITES",
                "description": "Protected materials.",
                "questions": [
                  {
                    "text": "Does the instrument contain CITES-listed materials?",
                    "kind": "boundary"
                  },
                  {
                    "text": "Is a musical instrument certificate needed for travel?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "travel",
            "name": "Travel",
            "description": "Airlines.",
            "findings": [
              {
                "id": "travel-finding",
                "name": "Travel",
                "description": "Air travel.",
                "questions": [
                  {
                    "text": "Can it travel in the cabin on this airline?",
                    "kind": "provenance"
                  },
                  {
                    "text": "How should it be packed?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should each instrument family be a separate entry?",
    "How should Hornbostel-Sachs codes be linked?",
    "How should CITES documentation be recorded?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}