{
    "model": {
        "rank": 2000,
        "code": "thing-q639669",
        "model_id": "vr.tr.musician",
        "name": "musician",
        "purpose": "Let an agent handle musicians by instrument, genre, works, performances and rights, with careful attribution.",
        "family": "Thing Registry",
        "category": "Society, people and institutions",
        "status": "research-draft",
        "kind": "thing",
        "plane": "SOC",
        "domain": "SOC.PER",
        "industry": "",
        "version": "",
        "url": "/models/thing/q639669/",
        "tier": 2,
        "score": 119,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "chasseur de Prinkères",
                "LGBTQ+ musician",
                "bandleader",
                "jōrurikatari",
                "principal cello",
                "principal flute",
                "bandmaster",
                "Leader of a small wind band",
                "Indian independent music producer",
                "blind musician",
                "molon",
                "amateur musician",
                "military musician",
                "radio DJ",
                "Mexican American musicians",
                "brass band leader",
                "one-man band",
                "street musician",
                "hip hop producer",
                "onkyoku-shi",
                "hip-hop musician",
                "folk musician",
                "pop musician",
                "principal horn",
                "principal tuba",
                "accompanist",
                "dansband musician",
                "disco musician",
                "bolero musician",
                "bossa nova musician",
                "rockabilly musician",
                "soul musician",
                "schlager musician",
                "morin khuur player",
                "principal trombone",
                "polka musician",
                "session musician",
                "principal bassoon",
                "Hispanic and Latino American musicians",
                "principal viola"
            ],
            "aliasCount": 292,
            "merged": 294,
            "knownIn": 119,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.musician-person",
            "source": {
                "dataset": "wikidata",
                "item": "Q639669",
                "url": "https://www.wikidata.org/wiki/Q639669",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-11T05:35:33Z",
                "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"
            },
            "metaModel": {
                "id": "THING-Q639669",
                "registryId": "vr.tr.musician",
                "name": "musician",
                "version": "0.2.0-wave.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "SOC.PER"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q639669/",
            "model": {
                "registry_id": "vr.tr.musician",
                "name": "musician",
                "purpose": "Let an agent handle musicians by instrument, genre, works, performances and rights, with careful attribution.",
                "definition": "A person who performs, composes or conducts music, as a profession or practice, including instrumentalists, singers, bandleaders and orchestral principals.",
                "what_it_is_for": "Making and performing music.",
                "affordances": [
                    "book and hear them perform",
                    "credit them on recordings",
                    "license their music",
                    "support them, through royalties and grants"
                ],
                "distinguishing_features": [
                    "Performs, composes or conducts music",
                    "Rights in performances and compositions differ",
                    "Collective management organisations collect royalties",
                    "Roles within ensembles are specific"
                ],
                "appearance": "Known through performances, recordings and credits; no particular appearance.",
                "visual_identification": [
                    "Credits on recordings and programmes",
                    "Identifiers such as ISNI and IPI",
                    "Roles such as principal cello or bandleader"
                ],
                "physical_properties": [],
                "families_and_kinds": [
                    "instrumentalists",
                    "singers and vocalists",
                    "composers",
                    "conductors and bandleaders",
                    "traditional performers such as joruri chanters"
                ],
                "related_models": [
                    {
                        "relation": "is a kind of",
                        "target": "artist",
                        "why": "role"
                    },
                    {
                        "relation": "performs",
                        "target": "music",
                        "why": "work"
                    },
                    {
                        "relation": "holds",
                        "target": "performer and composer rights",
                        "why": "rights"
                    },
                    {
                        "relation": "is member of",
                        "target": "ensemble",
                        "why": "group"
                    }
                ],
                "identifiers": [
                    {
                        "scheme": "ISNI",
                        "value_or_pattern": "16 digits",
                        "note": "names"
                    },
                    {
                        "scheme": "IPI name number",
                        "value_or_pattern": "numeric",
                        "note": "collective management"
                    }
                ],
                "standards_and_regulation": [
                    "Copyright and neighbouring rights law",
                    "Collective management rules such as EU Directive 2014/26/EU"
                ],
                "failure_modes_and_hazards": [
                    "Misattributed credits",
                    "Unpaid royalties",
                    "Hearing damage and overuse injuries"
                ],
                "in_scope": [],
                "out_of_scope": [],
                "characteristics": []
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "identity",
                        "name": "Identity",
                        "description": "Who the musician is.",
                        "rationale": "Names and identifiers avoid confusion.",
                        "layers": [
                            {
                                "id": "names",
                                "name": "Names",
                                "description": "Stage and legal names.",
                                "findings": [
                                    {
                                        "id": "names-finding",
                                        "name": "Names",
                                        "description": "Names used.",
                                        "questions": [
                                            {
                                                "text": "Under which names does the musician perform?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "text": "Which identifiers identify them?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "role",
                                "name": "Role",
                                "description": "Instrument and genre.",
                                "findings": [
                                    {
                                        "id": "role-finding",
                                        "name": "Role",
                                        "description": "Instrument and genre.",
                                        "questions": [
                                            {
                                                "text": "What instruments and genres?",
                                                "kind": "definition"
                                            },
                                            {
                                                "text": "In which ensembles?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "works",
                        "name": "Works",
                        "description": "Compositions and recordings.",
                        "rationale": "Works and credits are the record.",
                        "layers": [
                            {
                                "id": "recordings",
                                "name": "Recordings",
                                "description": "Discography.",
                                "findings": [
                                    {
                                        "id": "recordings-finding",
                                        "name": "Discography",
                                        "description": "Recordings.",
                                        "questions": [
                                            {
                                                "text": "Which recordings feature them, and in what role?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "text": "Are credits accurate?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "compositions",
                                "name": "Compositions",
                                "description": "Works written.",
                                "findings": [
                                    {
                                        "id": "compositions-finding",
                                        "name": "Compositions",
                                        "description": "Compositions.",
                                        "questions": [
                                            {
                                                "text": "Which works have they composed?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "text": "Who publishes them?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "rights",
                        "name": "Rights",
                        "description": "Royalties.",
                        "rationale": "Rights provide income.",
                        "layers": [
                            {
                                "id": "rights",
                                "name": "Rights",
                                "description": "Performer and author rights.",
                                "findings": [
                                    {
                                        "id": "rights-finding",
                                        "name": "Rights",
                                        "description": "Rights held.",
                                        "questions": [
                                            {
                                                "text": "Which rights do they hold in this recording or work?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "text": "Which society collects royalties?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "licensing",
                                "name": "Licensing",
                                "description": "Permission to use.",
                                "findings": [
                                    {
                                        "id": "licensing-finding",
                                        "name": "Licensing",
                                        "description": "How to license.",
                                        "questions": [
                                            {
                                                "text": "How can the music be licensed?",
                                                "kind": "action"
                                            },
                                            {
                                                "text": "Is sampling cleared?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "health",
                        "name": "Health",
                        "description": "Musicians health.",
                        "rationale": "Musicians face occupational risks.",
                        "layers": [
                            {
                                "id": "hearing",
                                "name": "Hearing",
                                "description": "Noise exposure.",
                                "findings": [
                                    {
                                        "id": "hearing-finding",
                                        "name": "Hearing",
                                        "description": "Hearing protection.",
                                        "questions": [
                                            {
                                                "text": "Is their noise exposure managed?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "text": "Which rules apply to orchestras?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "injury",
                                "name": "Injury",
                                "description": "Overuse.",
                                "findings": [
                                    {
                                        "id": "injury-finding",
                                        "name": "Injury",
                                        "description": "Overuse injuries.",
                                        "questions": [
                                            {
                                                "text": "Which injuries are common for this instrument?",
                                                "kind": "definition"
                                            },
                                            {
                                                "text": "Where can specialist care be found?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Should musical roles be separate entries?",
                "How should credits be linked to recordings?",
                "How should agents handle requests for unlicensed music?"
            ],
            "statistics": {
                "bundles": 4,
                "layers": 8,
                "findings": 8,
                "questions": 16
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "occupation or role",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a musician, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Let an agent handle musicians by instrument, genre, works, performances and rights, with careful attribution.",
            "characteristics": {
                "substance": "social",
                "origin": "natural",
                "agency": "autonomous",
                "mobility": "self-moving"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: chasseur de Prinkères, LGBTQ+ musician, bandleader, jōrurikatari, principal cello, principal flute, bandmaster, Leader of a small wind band, Indian independent music producer, blind musician, molon, amateur musician.",
                "294 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 119 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is."
            ],
            "openQuestionsForResearch": [
                "Which of the bundles below does a real task actually need, and which are ceremony?",
                "What does this thing have that the facets do not capture at all?",
                "Which neighbouring kind is most often confused with a musician, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "a social arrangement between people",
            "physicalCharacter": [
                "Moves under its own power or of its own accord.",
                "Acts on its own behalf.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state"
            ],
            "howItIsRecognised": [
                "Not recognisable by appearance, and guessing from dress or setting is how an agent gets this wrong. Recognised by qualification, licence or engagement."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "chasseur de Prinkères",
                        "LGBTQ+ musician",
                        "bandleader",
                        "jōrurikatari",
                        "principal cello",
                        "principal flute",
                        "bandmaster",
                        "Leader of a small wind band",
                        "Indian independent music producer",
                        "blind musician",
                        "molon",
                        "amateur musician"
                    ]
                }
            ],
            "standing": "Described in 119 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 294 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one musician from another, and a musician from things that resemble it.",
                        "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.",
                        "layers": [
                            {
                                "id": "naming-and-identifiers",
                                "name": "Names and identifiers",
                                "description": "The names this thing goes by and the identifiers that survive translation and time.",
                                "findings": [
                                    {
                                        "id": "preferred-name-and-aliases",
                                        "name": "Preferred name, aliases and local names",
                                        "description": "Which name to use, which names mean the same thing, and which merely sound similar.",
                                        "questions": [
                                            {
                                                "id": "preferred-name-and-aliases-q01",
                                                "text": "What identifies and describes the name of a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q02",
                                                "text": "Who or what asserted this about the name of a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q03",
                                                "text": "What may an agent decide or do once the name of a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "stable-identifiers",
                                        "name": "Stable identifiers and external keys",
                                        "description": "Identifiers that keep pointing at this kind of thing across systems and languages.",
                                        "questions": [
                                            {
                                                "id": "stable-identifiers-q01",
                                                "text": "What identifies and describes an identifier for a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q02",
                                                "text": "Who or what asserted this about an identifier for a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q03",
                                                "text": "What may an agent decide or do once an identifier for a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "classification-and-granularity",
                                "name": "Classification and granularity",
                                "description": "Where a musician sits among kinds, and how finely a task needs to cut it.",
                                "findings": [
                                    {
                                        "id": "kind-and-parents",
                                        "name": "Kind, parents and neighbouring kinds",
                                        "description": "The classes this thing belongs to and the ones it is next to.",
                                        "questions": [
                                            {
                                                "id": "kind-and-parents-q01",
                                                "text": "What identifies and describes the kind of a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q02",
                                                "text": "Who or what asserted this about the kind of a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q03",
                                                "text": "What may an agent decide or do once the kind of a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "distinguishing-features",
                                        "name": "Distinguishing features",
                                        "description": "What separates a musician from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q02",
                                                "text": "Who or what asserted this about what distinguishes a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q03",
                                                "text": "What may an agent decide or do once what distinguishes a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "place-and-movement",
                        "name": "Place and movement",
                        "description": "Where a musician is, how it got there and where it may go (self-moving).",
                        "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.",
                        "layers": [
                            {
                                "id": "location-and-placement",
                                "name": "Location and placement",
                                "description": "Position, containment and the reference frame the position is given in.",
                                "findings": [
                                    {
                                        "id": "position-and-frame",
                                        "name": "Position, container and reference frame",
                                        "description": "Where a musician is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q02",
                                                "text": "Who or what asserted this about the location of a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q03",
                                                "text": "What may an agent decide or do once the location of a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "movement-and-transfer",
                                "name": "Movement and transfer",
                                "description": "How a musician moves on its own.",
                                "findings": [
                                    {
                                        "id": "movement-events",
                                        "name": "Movement events and constraints",
                                        "description": "What counts as a movement, what records it and what limits it.",
                                        "questions": [
                                            {
                                                "id": "movement-events-q01",
                                                "text": "What identifies and describes the movement of a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q02",
                                                "text": "Who or what asserted this about the movement of a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q03",
                                                "text": "What may an agent decide or do once the movement of a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "state-and-lifecycle",
                        "name": "State and lifecycle",
                        "description": "The states a musician passes through and the events that move it between them.",
                        "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.",
                        "layers": [
                            {
                                "id": "lifecycle-stages",
                                "name": "Lifecycle stages",
                                "description": "From coming into existence to ceasing to be one of these.",
                                "findings": [
                                    {
                                        "id": "stages-and-transitions",
                                        "name": "Stages and transitions",
                                        "description": "The stages worth naming and what moves a musician between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q02",
                                                "text": "Who or what asserted this about the lifecycle of a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q03",
                                                "text": "What may an agent decide or do once the lifecycle of a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "observations-and-status",
                                "name": "Observations and current status",
                                "description": "What is observed about a musician, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a musician is recorded so that it can be superseded rather than overwritten.",
                                        "questions": [
                                            {
                                                "id": "observation-record-q01",
                                                "text": "What identifies and describes an observation of a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q02",
                                                "text": "Who or what asserted this about an observation of a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q03",
                                                "text": "What may an agent decide or do once an observation of a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "people-and-responsibility",
                        "name": "People, roles and responsibility",
                        "description": "Who stands in what relation to a musician.",
                        "rationale": "Social things are defined by the relations people hold to them, and those relations change without the thing changing.",
                        "layers": [
                            {
                                "id": "roles-and-parties",
                                "name": "Roles and parties",
                                "description": "The roles that exist around a musician and who fills them.",
                                "findings": [
                                    {
                                        "id": "role-assignments",
                                        "name": "Role assignments and their validity",
                                        "description": "Who holds which role over a musician, from when, and on whose authority.",
                                        "questions": [
                                            {
                                                "id": "role-assignments-q01",
                                                "text": "What identifies and describes a role over a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "role-assignments-q02",
                                                "text": "Who or what asserted this about a role over a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "role-assignments-q03",
                                                "text": "What may an agent decide or do once a role over a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "ownership-and-accountability",
                                "name": "Ownership and accountability",
                                "description": "Who answers for a musician and who may decide about it.",
                                "findings": [
                                    {
                                        "id": "accountability",
                                        "name": "Accountability and decision rights",
                                        "description": "Where responsibility for a musician sits when something goes wrong.",
                                        "questions": [
                                            {
                                                "id": "accountability-q01",
                                                "text": "What identifies and describes responsibility for a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "accountability-q02",
                                                "text": "Who or what asserted this about responsibility for a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "accountability-q03",
                                                "text": "What may an agent decide or do once responsibility for a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "competence-and-licence",
                        "name": "Competence, qualification and licence",
                        "description": "What someone must be able to do, and be permitted to do, as musician.",
                        "rationale": "The permission is jurisdictional and the competence is not, and conflating them is how an agent concludes someone may practise when they may not.",
                        "layers": [
                            {
                                "id": "competences",
                                "name": "Competences and qualifications",
                                "description": "Skills and credentials the role assumes.",
                                "findings": [
                                    {
                                        "id": "qualification-record",
                                        "name": "Qualifications and how they are evidenced",
                                        "description": "What counts as qualified, and what proves it.",
                                        "questions": [
                                            {
                                                "id": "qualification-record-q01",
                                                "text": "What competences and qualifications does musician require, and how is each evidenced?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "qualification-record-q02",
                                                "text": "Which qualifications transfer between jurisdictions and which do not?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "licensing",
                                "name": "Licensing and the right to practise",
                                "description": "Who grants permission, where it holds, and when it lapses.",
                                "findings": [
                                    {
                                        "id": "licence-record",
                                        "name": "Licence, issuer and validity",
                                        "description": "The permission, its issuer, its territory and its expiry.",
                                        "questions": [
                                            {
                                                "id": "licence-record-q01",
                                                "text": "Who licenses musician, in which territory, and for how long?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "licence-record-q02",
                                                "text": "What may an unlicensed person not do, and what must an agent refuse to assume?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "tasks-and-accountability",
                        "name": "Tasks, employment and accountability",
                        "description": "What musician actually does and who answers for it.",
                        "rationale": "A role is filled by people under an arrangement, and the arrangement decides liability, supervision and who may instruct whom.",
                        "layers": [
                            {
                                "id": "tasks",
                                "name": "Tasks and typical duties",
                                "description": "The work itself, and how it differs by setting.",
                                "findings": [
                                    {
                                        "id": "duty-record",
                                        "name": "Duties and setting",
                                        "description": "What the role does and where the work varies.",
                                        "questions": [
                                            {
                                                "id": "duty-record-q01",
                                                "text": "What tasks define musician, and how do they differ between settings or seniority?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "duty-record-q02",
                                                "text": "Which tasks may only be done by this role, and which are shared with neighbouring roles?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "accountability",
                                "name": "Employment and accountability",
                                "description": "The relation under which the work is done and where responsibility sits.",
                                "findings": [
                                    {
                                        "id": "responsibility",
                                        "name": "Responsibility and supervision",
                                        "description": "Who instructs, who supervises, who is liable.",
                                        "questions": [
                                            {
                                                "id": "responsibility-q01",
                                                "text": "Under what arrangement does someone act as musician, and who supervises or is liable?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "responsibility-q02",
                                                "text": "When something goes wrong, what does the model need to have recorded to answer who was responsible?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a musician came from and when it held.",
                        "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.",
                        "layers": [
                            {
                                "id": "source-and-authority",
                                "name": "Source and authority",
                                "description": "Who said it, on what evidence, and how strongly.",
                                "findings": [
                                    {
                                        "id": "claim-provenance",
                                        "name": "Claim provenance and confidence",
                                        "description": "The authority behind each claim about a musician and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q02",
                                                "text": "Who or what asserted this about a claim about a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q03",
                                                "text": "What may an agent decide or do once a claim about a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "time-and-versions",
                                "name": "Time, versions and supersession",
                                "description": "When a claim was true, when it was learnt, and what replaced it.",
                                "findings": [
                                    {
                                        "id": "validity-and-supersession",
                                        "name": "Validity period and supersession",
                                        "description": "How an old claim about a musician is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a musician, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q02",
                                                "text": "Who or what asserted this about the validity of a claim about a musician, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q03",
                                                "text": "What may an agent decide or do once the validity of a claim about a musician is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 7,
                "layers": 14,
                "findings": 16,
                "questions": 44
            }
        }
    }
}