{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-13T01:30:35Z",
    "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": 3,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T10:00:00Z",
      "ingestedAt": "2026-10-06T06:59:39+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-06T19:52:02+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q8338",
    "registryId": "vr.tr.trumpet",
    "name": "trumpet",
    "version": "0.2.0-wave.3",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.OBJ"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q8338/",
  "model": {
    "registry_id": "vr.tr.trumpet",
    "name": "trumpet",
    "purpose": "Let an agent explain the trumpet, its construction and variants, relay technique, repertoire and history, and distinguish the trumpet from the cornet, flugelhorn and other brass.",
    "definition": "A brass instrument with a cylindrical bore, a cup mouthpiece and, in modern form, three valves, played by buzzing the lips to produce a bright, powerful tone, in variants including the B flat and C trumpets of orchestras and jazz, piccolo, fanfare and herald trumpets, the long straight Aida trumpet built for Verdi opera, and historical natural and baroque trumpets; the trumpet has ceremonial, military, classical, jazz and popular music roles and a long history from ancient signalling instruments.",
    "what_it_is_for": "Music, signalling and ceremony.",
    "affordances": [
      "explain construction and variants",
      "relay technique and repertoire",
      "relay history",
      "distinguish from related brass"
    ],
    "distinguishing_features": [
      "Cylindrical bore and bright tone",
      "Piston or rotary valves",
      "Wide range of variants",
      "Ceremonial and jazz roles"
    ],
    "appearance": "A coiled brass tube with three valves, a flared bell and a cup mouthpiece.",
    "visual_identification": [
      "Valved cylindrical-bore brass instrument",
      "B flat, C, piccolo, fanfare, Aida and natural trumpets",
      "The cornet has a conical bore; the flugelhorn is wider and mellower; the bugle has no valves"
    ],
    "physical_properties": [
      {
        "quantity": "B flat trumpet tube length",
        "typical_range": "about 1.48",
        "unit": "m",
        "note": ""
      },
      {
        "quantity": "valves",
        "typical_range": "3",
        "unit": "count",
        "note": "standard; rotary or piston"
      }
    ],
    "families_and_kinds": [
      "B flat and C trumpets",
      "piccolo and D or E flat trumpets",
      "fanfare, herald and Aida trumpets",
      "natural and baroque trumpets",
      "rotary valve trumpets",
      "pocket and bass trumpets",
      "traditional trumpets such as the Persian sur"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "valve trumpet",
        "why": "in registry terms"
      },
      {
        "relation": "is a kind of",
        "target": "brass instrument",
        "why": "in general terms"
      },
      {
        "relation": "is contrasted with",
        "target": "cornet",
        "why": "with conical bore"
      },
      {
        "relation": "is played in",
        "target": "orchestra",
        "why": "and jazz ensembles"
      }
    ],
    "identifiers": [
      {
        "scheme": "Hornbostel-Sachs",
        "value_or_pattern": "423.233",
        "note": "valved trumpets"
      }
    ],
    "standards_and_regulation": [
      "No regulation; manufacturing and pitch standards such as A440"
    ],
    "failure_modes_and_hazards": [
      "Confusing trumpet with cornet or flugelhorn",
      "Hearing damage from loud practice",
      "Instrument damage from poor maintenance"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Describe the trumpet, its history and repertoire from reliable sources.",
        "Help players with practice plans, fingering charts and transposition."
      ],
      "must_not": [
        "Recommend practice routines that risk lip or hearing damage without warning.",
        "Misattribute recordings or performances to trumpet players.",
        "Present a common or student instrument as a rare or valuable one in a sale."
      ],
      "requires_human": [
        "Selling or appraising a valuable instrument."
      ]
    },
    "ethics": {
      "considerations": [
        "Loud brass playing can damage players' hearing over time.",
        "Honest appraisal protects buyers of instruments."
      ],
      "affected_parties": [
        "Players",
        "Audiences and neighbours",
        "Buyers"
      ]
    },
    "owners": {
      "steward": "The person who owns it; schools and orchestras for their instruments.",
      "master_systems": []
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q8338: trumpet",
      "url": "https://www.wikidata.org/wiki/Q8338",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Trumpet",
      "url": "https://en.wikipedia.org/wiki/Trumpet",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "identify",
        "name": "Identify",
        "description": "What a trumpet is.",
        "rationale": "Identity.",
        "layers": [
          {
            "id": "definition",
            "name": "Definition",
            "description": "Construction and variants.",
            "findings": [
              {
                "id": "definition-finding",
                "name": "Definition",
                "description": "Definition.",
                "questions": [
                  {
                    "text": "How is a trumpet built, and what variants exist?",
                    "kind": "definition"
                  },
                  {
                    "text": "Is the instrument a trumpet, a cornet, a flugelhorn or a bugle?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "sound",
            "name": "Sound",
            "description": "Sound production.",
            "findings": [
              {
                "id": "sound-finding",
                "name": "Sound",
                "description": "Sound.",
                "questions": [
                  {
                    "text": "How do lip buzzing, harmonics and valves produce the trumpet range?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which entry fits brass acoustics?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "play",
        "name": "Play",
        "description": "Playing and learning.",
        "rationale": "Practice.",
        "layers": [
          {
            "id": "technique",
            "name": "Technique",
            "description": "Technique.",
            "findings": [
              {
                "id": "technique-finding",
                "name": "Technique",
                "description": "Technique.",
                "questions": [
                  {
                    "text": "What are the basics of embouchure, breathing, articulation and range development?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which references are standard?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "repertoire",
            "name": "Repertoire",
            "description": "Repertoire.",
            "findings": [
              {
                "id": "repertoire-finding",
                "name": "Repertoire",
                "description": "Repertoire.",
                "questions": [
                  {
                    "text": "What are landmark works and players in classical and jazz trumpet?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits the specific work or player?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "history",
        "name": "History",
        "description": "History.",
        "rationale": "Context.",
        "layers": [
          {
            "id": "early",
            "name": "Early",
            "description": "Early trumpets.",
            "findings": [
              {
                "id": "early-finding",
                "name": "Early",
                "description": "Early.",
                "questions": [
                  {
                    "text": "How did trumpets develop from ancient signalling instruments through the natural trumpet?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which sources are cited?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "valves",
            "name": "Valves",
            "description": "Valved trumpet.",
            "findings": [
              {
                "id": "valves-finding",
                "name": "Valves",
                "description": "Valves.",
                "questions": [
                  {
                    "text": "How did valves transform the trumpet in the nineteenth century, and how did jazz shape it?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits the history of brass instruments?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "context",
        "name": "Context",
        "description": "Making and culture.",
        "rationale": "Context.",
        "layers": [
          {
            "id": "making",
            "name": "Making",
            "description": "Manufacture and care.",
            "findings": [
              {
                "id": "making-finding",
                "name": "Making",
                "description": "Making.",
                "questions": [
                  {
                    "text": "How are trumpets made and maintained?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits brass instrument making?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "culture",
            "name": "Culture",
            "description": "Ceremony and culture.",
            "findings": [
              {
                "id": "culture-finding",
                "name": "Culture",
                "description": "Culture.",
                "questions": [
                  {
                    "text": "How are trumpets used in military, ceremonial and religious contexts?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits military music?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should natural trumpet and piccolo trumpet be separate entries?",
    "How should organological references be linked?",
    "The registry entry has merged aliases naming variants and unclear terms; should they be split off?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}