{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T08:33:50Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 18.3,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a094bf-35f3-7332-b14b-209807f89eb6\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: Chalcidian helmet\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043: 10",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 76.3,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a094bf-3600-7af0-8db9-1371985ae652\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: Chalcidian helmet\nRegistry id: vr.tr.chalcidian-helmet\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entr"
      }
    },
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T08:52:57+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "failure_modes_and_hazards",
        "owners",
        "visual_identification"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:25+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q1059761",
    "registryId": "vr.tr.chalcidian-helmet",
    "name": "Chalcidian helmet",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.OBJ"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q1059761/",
  "model": {
    "registry_id": "vr.tr.chalcidian-helmet",
    "name": "Chalcidian helmet",
    "purpose": "Enable an agent to recognise a Chalcidian helmet, assess the evidence and condition of an attributed example, and select appropriate study, handling or conservation actions.",
    "definition": "A Chalcidian helmet is an ancient Greek bronze helmet type, used during the later Archaic and Classical periods, characterized by an open face, cutouts around the ears, cheekpieces, and usually a nasal guard.",
    "scope_statement": "This model owns the diagnostic morphology, construction variants, attribution evidence and surviving physical state of the ancient helmet type registered as vr.tr.chalcidian-helmet in PHY / PHY.OBJ; individual helmets supply observations rather than define the type.",
    "in_scope": [
      "Diagnostic relationships between bowl, ear openings, nasal, cheekpieces and neck protection",
      "Fixed and hinged cheekpiece construction and evidence for attachments",
      "Measurements relevant to head coverage, fit and surviving metal",
      "Evidence supporting chronological, regional and typological attribution",
      "Distinction between original fabric, ancient alteration, damage and modern restoration",
      "Helmet-specific requirements for examination, support and conservation"
    ],
    "out_of_scope": [
      "General helmet mechanics and modern protective-equipment certification",
      "Full models of Corinthian, Attic and other neighbouring helmet types",
      "Ancient military formations, tactics and warrior occupations",
      "Bronze metallurgy as a general material model",
      "Pottery and other artworks depicting helmets",
      "Collection ownership and excavation-site management beyond linked evidence"
    ],
    "distinguishing_features": [
      "Assess the combination of rounded bowl, substantial ear openings, cheekpieces, neck protection and a typically small nasal; no isolated feature establishes attribution. [Morphological overview](https://en.wikipedia.org/wiki/Chalcidian_helmet)",
      "Use deliberate ear openings and the relatively open facial arrangement as comparison points against Corinthian forms, checking that apparent openings are original rather than losses. [Comparative overview](https://en.wikipedia.org/wiki/Chalcidian_helmet)",
      "Record whether a nasal survives, was originally absent or has broken away before considering an Attic attribution; nasal condition alone is not a sufficient classification rule.",
      "Accept both integral and hinged cheekpieces as candidate Chalcidian configurations; hinges alone do not exclude the type. [Met hinged example](https://www.metmuseum.org/art/collection/search/257636)",
      "Require morphological evidence rather than a supposed connection to Chalcis: the name refers to representations on so-called Chalcidian vases. [Met naming explanation](https://www.metmuseum.org/art/collection/search/247113)"
    ],
    "characteristics": [
      {
        "name": "Typological attribution",
        "kind": "relation",
        "unit_or_values": "Named classification authority and comparator specimens, with confidence and alternatives",
        "why_it_matters": "Makes the identification reviewable when classification systems differ."
      },
      {
        "name": "Ear-opening morphology",
        "kind": "category",
        "unit_or_values": "Contour and position on each side; original, altered, damaged or indeterminate",
        "why_it_matters": "Separates an intentional diagnostic opening from missing metal."
      },
      {
        "name": "Nasal preservation",
        "kind": "state",
        "unit_or_values": "Intact, incomplete, broken away, originally absent, restored or indeterminate",
        "why_it_matters": "Prevents loss or restoration from deciding the neighbouring-type boundary."
      },
      {
        "name": "Cheekpiece attachment",
        "kind": "category",
        "unit_or_values": "Integral, hinged, other documented construction or indeterminate; recorded separately by side",
        "why_it_matters": "Captures recognised construction variation and asymmetric survival."
      },
      {
        "name": "Bowl and opening dimensions",
        "kind": "measurement",
        "unit_or_values": "mm; height, width, depth and internal opening axes with measurement landmarks",
        "why_it_matters": "Supports comparable geometry and cautious fit reconstruction."
      },
      {
        "name": "Wall-thickness distribution",
        "kind": "measurement",
        "unit_or_values": "mm at mapped locations, with method and corrosion limitations",
        "why_it_matters": "Identifies thin or weakened regions without assuming uniform metal."
      },
      {
        "name": "Surviving mass",
        "kind": "measurement",
        "unit_or_values": "g, stating included restorations, detached pieces and mounts",
        "why_it_matters": "Avoids treating the present assembly's mass as original wearing weight."
      },
      {
        "name": "Metal identification",
        "kind": "category",
        "unit_or_values": "Reported bronze, analytically characterised copper alloy, other or unknown",
        "why_it_matters": "Separates catalogue terminology from measured composition."
      },
      {
        "name": "Attachment evidence",
        "kind": "relation",
        "unit_or_values": "Mapped holes, rivets, hinges, fittings and residues linked to proposed functions",
        "why_it_matters": "Supports or challenges reconstructions of lining, retention and crest arrangements."
      },
      {
        "name": "Attribution date",
        "kind": "measurement",
        "unit_or_values": "BCE/CE interval with dating method and confidence",
        "why_it_matters": "Keeps specimen dating distinct from the overall duration of the type."
      },
      {
        "name": "Structural integrity",
        "kind": "state",
        "unit_or_values": "Mapped cracks, perforations, distortion, corrosion and joint stability",
        "why_it_matters": "Determines whether the bowl, nasal or cheekpieces can tolerate examination and support."
      }
    ],
    "affordances": [
      "Compare diagnostic contours with documented helmets and explain an attribution or unresolved alternative.",
      "Map original, missing and restored components before measuring or reconstructing the helmet.",
      "Reconstruct probable head coverage digitally while marking assumptions about lining and deformation.",
      "Identify targeted imaging or material analysis that could resolve construction and attribution questions.",
      "Specify a display or examination support that avoids loading fragile nasal, cheekpiece and neck edges.",
      "Refer corrosion, unstable joints or proposed hinge movement for conservation assessment."
    ],
    "agent_conduct": {
      "may": [
        "Describe the Chalcidian helmet and its development from archaeological sources.",
        "Catalogue surviving examples with find context and provenance."
      ],
      "must_not": [
        "Help trade helmets looted from graves or exported in breach of heritage law.",
        "Present a modern copy or restored composite as an intact original.",
        "Misattribute a helmet to a named battle or warrior without evidence."
      ],
      "requires_human": [
        "Authenticating, valuing or selling an ancient helmet."
      ]
    },
    "ethics": {
      "considerations": [
        "Looting of ancient graves destroys context and harms source countries.",
        "Forgeries are common in the antiquities trade."
      ],
      "affected_parties": [
        "Source countries and their heritage",
        "Museums and researchers",
        "Buyers"
      ]
    },
    "owners": {
      "steward": "The holding museum or the state for archaeological finds.",
      "master_systems": [
        "National cultural heritage and museum inventories"
      ]
    },
    "visual_identification": [
      "A bronze helmet with an open face, ear cut-outs and hinged or fixed cheekpieces.",
      "Usually a short nose guard and a flared neck guard."
    ],
    "failure_modes_and_hazards": [
      "Bronze disease and corrosion damage untreated helmets.",
      "Illicit and faked pieces circulate in the market."
    ],
    "what_it_is_for": [
      "Chalcidian helmets were used as head protection by warriors in the ancient Greek world, especially during the later Archaic and Classical periods.",
      "Surviving examples occur in archaeological collections and museums, where they support research into warfare, metalworking and regional exchange.",
      "Their construction, archaeological context and condition inform attribution, display and conservation decisions."
    ],
    "standards_and_regulation": [
      "The 1970 Convention on the Means of Prohibiting and Preventing the Illicit Import, Export and Transfer of Ownership of Cultural Property, adopted by UNESCO, provides a framework relevant to ancient helmets designated as cultural property by participating states."
    ]
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q1059761: Chalcidian helmet",
      "url": "https://www.wikidata.org/wiki/Q1059761",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Chalcidian helmet",
      "url": "https://en.wikipedia.org/wiki/Chalcidian_helmet",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "type-recognition",
        "name": "Type recognition",
        "description": "Recognise the Chalcidian configuration and document the limits of that identification.",
        "rationale": "A broad label can conceal damaged diagnostic features and competing typologies.",
        "layers": [
          {
            "id": "diagnostic-configuration",
            "name": "Diagnostic configuration",
            "description": "Evaluate the helmet's connected protective surfaces and openings.",
            "findings": [
              {
                "id": "bowl-face-ear-relationship",
                "name": "Bowl, face and ear relationship",
                "description": "Record the arrangement of bowl, ear openings, nasal, cheekpieces and neck edge, separating observed contours from reconstructions.",
                "questions": [
                  {
                    "text": "Which surviving features jointly support a Chalcidian attribution?",
                    "kind": "definition",
                    "id": "bowl-face-ear-relationship-q01"
                  },
                  {
                    "text": "Which apparent openings or missing projections result from damage rather than original design?",
                    "kind": "boundary",
                    "id": "bowl-face-ear-relationship-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "classification-boundaries",
            "name": "Classification boundaries",
            "description": "Make neighbouring types and regional naming conventions explicit.",
            "findings": [
              {
                "id": "attribution-comparators",
                "name": "Attribution comparators",
                "description": "Associate the proposed classification with identified specimens and an explicit typological authority rather than relying on the object name.",
                "questions": [
                  {
                    "text": "Which documented comparators distinguish this example from Corinthian or Attic alternatives?",
                    "kind": "boundary",
                    "id": "attribution-comparators-q01"
                  },
                  {
                    "text": "Which authority determines whether a regional or hinged variant belongs within this entry?",
                    "kind": "provenance",
                    "id": "attribution-comparators-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "construction-and-wearing",
        "name": "Construction and wearing",
        "description": "Describe how the bowl, cheekpieces and attachments formed a wearable protective assembly.",
        "rationale": "Construction affects classification, reconstructed fit and the interpretation of surviving fittings.",
        "layers": [
          {
            "id": "metal-and-cheekpiece-assembly",
            "name": "Metal and cheekpiece assembly",
            "description": "Characterise metal surfaces and the physical relationship between bowl and cheekpieces.",
            "findings": [
              {
                "id": "integral-or-hinged-construction",
                "name": "Integral or hinged construction",
                "description": "Treat cheekpiece attachment as an observed variable: the Met documents a Chalcidian example with hinged cheekpieces. [Met construction record](https://www.metmuseum.org/art/collection/search/257636)",
                "questions": [
                  {
                    "text": "Are the cheekpieces integral or separately attached, and what physical traces establish that construction?",
                    "kind": "definition",
                    "id": "integral-or-hinged-construction-q01"
                  },
                  {
                    "text": "Where can metal thickness and joint geometry be measured without stressing the assembly?",
                    "kind": "measurement",
                    "id": "integral-or-hinged-construction-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "fit-and-attachment-evidence",
            "name": "Fit and attachment evidence",
            "description": "Relate internal space and attachment traces to possible wearing arrangements.",
            "findings": [
              {
                "id": "wearing-reconstruction",
                "name": "Wearing reconstruction",
                "description": "Distinguish directly observed holes, fittings and residues from hypotheses about lining, retention and crest attachments.",
                "questions": [
                  {
                    "text": "Which attachment traces support a lining, retention device or crest, and which remain unexplained?",
                    "kind": "provenance",
                    "id": "wearing-reconstruction-q01"
                  },
                  {
                    "text": "What internal dimensions and deformation corrections constrain a digital reconstruction of head coverage?",
                    "kind": "measurement",
                    "id": "wearing-reconstruction-q02"
                  },
                  {
                    "text": "Which proposed wearing features remain speculative because organic components or fittings are missing?",
                    "kind": "boundary",
                    "id": "wearing-reconstruction-q03"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "historical-attribution",
        "name": "Historical attribution",
        "description": "Connect the helmet's proposed date and regional associations to specific evidence.",
        "rationale": "A typological name, findspot and place of manufacture are different claims.",
        "layers": [
          {
            "id": "date-and-regional-association",
            "name": "Date and regional association",
            "description": "Assess chronological and geographical claims independently.",
            "findings": [
              {
                "id": "attribution-evidence",
                "name": "Attribution evidence",
                "description": "Keep specimen dates and regional assignments tied to their evidence; the name Chalcidian derives from vase representations and does not itself establish a workshop location. [Met terminology record](https://www.metmuseum.org/art/collection/search/247113)",
                "questions": [
                  {
                    "text": "Does the proposed date derive from excavation context, associated finds, stylistic comparison or an unsupported catalogue attribution?",
                    "kind": "provenance",
                    "id": "attribution-evidence-q01"
                  },
                  {
                    "text": "What evidence distinguishes findspot, manufacturing location and region of use?",
                    "kind": "boundary",
                    "id": "attribution-evidence-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "use-and-deposition",
            "name": "Use and deposition",
            "description": "Evaluate evidence for wearing, repair and the circumstances of archaeological deposition.",
            "findings": [
              {
                "id": "helmet-life-history",
                "name": "Helmet life history",
                "description": "Record wear, repairs, inscriptions and deformation without automatically assigning combat, funerary or dedicatory meanings.",
                "questions": [
                  {
                    "text": "Which traces support wearing or ancient repair, and which could have arisen during burial or later handling?",
                    "kind": "provenance",
                    "id": "helmet-life-history-q01"
                  },
                  {
                    "text": "What contextual evidence supports a funerary, dedicatory or other depositional interpretation?",
                    "kind": "provenance",
                    "id": "helmet-life-history-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "survival-and-intervention",
        "name": "Survival and intervention",
        "description": "Assess how surviving metal and restorations affect interpretation and permissible physical actions.",
        "rationale": "Fragile projections and reconstructed contours can both mislead identification and constrain examination.",
        "layers": [
          {
            "id": "fabric-and-restoration",
            "name": "Fabric and restoration",
            "description": "Map the authenticity and condition of diagnostic helmet components.",
            "findings": [
              {
                "id": "diagnostic-fabric-integrity",
                "name": "Diagnostic fabric integrity",
                "description": "Distinguish original bowl, nasal, cheekpieces and neck edge from fills, replacements and repositioned fragments.",
                "questions": [
                  {
                    "text": "Which diagnostic contours survive in original metal, and which depend on modern restoration?",
                    "kind": "boundary",
                    "id": "diagnostic-fabric-integrity-q01"
                  },
                  {
                    "text": "Where do cracks, corrosion or distorted joins undermine confidence in the reconstructed shape?",
                    "kind": "measurement",
                    "id": "diagnostic-fabric-integrity-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "examination-and-support",
            "name": "Examination and support",
            "description": "Translate the helmet's condition into specific examination and display constraints.",
            "findings": [
              {
                "id": "supported-access",
                "name": "Supported access",
                "description": "Base handling and imaging access on assessed bowl strength, edge fragility and cheekpiece stability; the presence of a hinge does not establish that it can safely move.",
                "questions": [
                  {
                    "text": "Which support points avoid loading the nasal, cheekpiece tips, ear-opening edges and weakened neck guard?",
                    "kind": "action",
                    "id": "supported-access-q01"
                  },
                  {
                    "text": "Can the interior and joints be documented in place, or is conservator-supervised repositioning required?",
                    "kind": "action",
                    "id": "supported-access-q02"
                  },
                  {
                    "text": "What condition evidence must be reviewed before a hinged cheekpiece is moved?",
                    "kind": "action",
                    "id": "supported-access-q03"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "evidence-and-external-alignment",
        "name": "Evidence and external alignment",
        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
        "layers": [
          {
            "id": "reported-evidence",
            "name": "Reported evidence",
            "description": "Findings from the breadth pass, kept separate from the structural claims.",
            "findings": [
              {
                "id": "evidence-confidence-notes",
                "name": "Check these first",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "This account is recalled knowledge, not a source-checked description.",
                  "Precise chronology, regional attribution, and subtype terminology should be checked against specialist catalogues.",
                  "No universal dimensions or mass range is supplied; these should be established from documented specimens."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of Chalcidian helmet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-kinds",
                "name": "Kinds and varieties",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Forms with fixed cheekpieces",
                  "Forms with hinged cheekpieces"
                ],
                "questions": [
                  {
                    "id": "evidence-kinds-q01",
                    "text": "Which of these kinds and varieties hold for the sense of Chalcidian helmet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-real-world-use",
                "name": "Real-world use",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Head protection in ancient warfare.",
                  "Deposition as a dedication in sanctuaries.",
                  "Inclusion in some funerary assemblages.",
                  "Archaeological study of ancient armour production and distribution."
                ],
                "questions": [
                  {
                    "id": "evidence-real-world-use-q01",
                    "text": "Which of these real-world use hold for the sense of Chalcidian helmet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-failure-modes-and-hazards",
                "name": "Failure modes and hazards",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "The open face and ear cutouts leave areas exposed to injury.",
                  "Heavy blows can deform or penetrate the bronze shell.",
                  "Hinged cheekpieces introduce joints that can break or lose their pins.",
                  "Burial corrosion and ancient repairs can weaken surviving examples."
                ],
                "questions": [
                  {
                    "id": "evidence-failure-modes-and-hazards-q01",
                    "text": "Which of these failure modes and hazards hold for the sense of Chalcidian helmet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-regional-variation",
                "name": "Regional variation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Examples occur in Greek and Italian archaeological contexts; findspot alone does not establish the place of manufacture.",
                  "The name derives from association with depictions on pottery called Chalcidian, rather than securely establishing manufacture at Chalcis."
                ],
                "questions": [
                  {
                    "id": "evidence-regional-variation-q01",
                    "text": "Which of these regional variation hold for the sense of Chalcidian helmet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-neighbours",
                "name": "Neighbouring kinds and how to tell them apart",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "name": "Corinthian helmet",
                    "difference": "A Corinthian helmet typically encloses more of the face and ears; a Chalcidian helmet has distinct ear cutouts and a more open facial arrangement."
                  },
                  {
                    "name": "Attic helmet",
                    "difference": "Attic helmets generally lack the nasal guard typical of Chalcidian helmets, although classification boundaries vary."
                  },
                  {
                    "name": "Individual Chalcidian helmet",
                    "difference": "The registered thing is an archaeological helmet type; an individual specimen has its own dimensions, provenance, condition, and museum accession number."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of Chalcidian helmet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Which specialist typology should govern the boundaries with Attic, Lucanian, Italo-Chalcidian and Hispano-Chalcidian forms?",
    "Which securely excavated examples establish the earliest and latest dates of the type and its regional variants?",
    "What measured ranges of mass, thickness and internal dimensions remain defensible after accounting for corrosion, missing components and restoration?",
    "Which primary archaeological studies establish lining, retention and crest arrangements for particular variants?",
    "What experimental evidence supports claims about hearing, vision and protection, and how sensitive are those results to reconstructed fit and padding?"
  ],
  "statistics": {
    "bundles": 5,
    "layers": 9,
    "findings": 14,
    "questions": 24
  }
}
