{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T08:20:05Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 18.1,
        "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: 01a094b2-d007-79a1-a704-6f30514dc7d1\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: calcium fumarate\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043: 100",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 64.1,
        "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: 01a094b2-d011-7201-a2fe-f0f666ebc824\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: calcium fumarate\nRegistry id: vr.tr.calcium-fumarate\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry:"
      }
    },
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T08:52:22+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "failure_modes_and_hazards",
        "owners",
        "visual_identification"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:33+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q836445",
    "registryId": "vr.tr.calcium-fumarate",
    "name": "calcium fumarate",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.MAT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q836445/",
  "model": {
    "registry_id": "vr.tr.calcium-fumarate",
    "name": "calcium fumarate",
    "purpose": "Enable an agent to recognise calcium fumarate, assess the identity and fitness of a particular material, and determine which handling or use decisions its evidence supports.",
    "definition": "Calcium fumarate is the calcium salt of fumaric acid, consisting of calcium cations and fumarate dianions, with the anhydrous formula CaC4H2O4.",
    "scope_statement": "This model owns the chemical identity, material forms, batch quality, condition-dependent behaviour and use constraints of calcium fumarate under registry entry vr.tr.calcium-fumarate in PHY / PHY.MAT, while distinguishing the substance from formulations containing it.",
    "in_scope": [
      "Calcium and fumarate identity, ionic stoichiometry and distinction between anhydrous and hydrated forms",
      "Batch composition, assay basis, water content and relevant impurities",
      "Physical form, dissolution behaviour and thermal behaviour under recorded conditions",
      "Grade-specific specifications, traceability and evidence of conformity",
      "Handling, storage and intended-use constraints supported by applicable evidence"
    ],
    "out_of_scope": [
      "Fumaric acid, maleic acid and their separate substance models",
      "Other calcium salts and fumarate salts with other counterions",
      "Finished foods, supplements, medicines or mixtures containing calcium fumarate",
      "Manufacturing equipment and complete synthesis-process models",
      "Clinical calcium requirements, patient treatment and dosing decisions"
    ],
    "distinguishing_features": [
      "Establish that both calcium and fumarate are present; calcium content alone cannot distinguish this material from another calcium salt.",
      "Confirm the fumarate anion's trans configuration to distinguish it from the corresponding maleate material.",
      "Check calcium-to-fumarate stoichiometry and acid-base composition to distinguish the declared salt from an acid salt or a mixture containing free fumaric acid.",
      "Determine whether measured water represents a hydrate, adsorbed moisture or another contribution before comparing formula masses and assay results.",
      "Distinguish an identified calcium fumarate substance batch from a formulation whose label merely lists calcium fumarate as an ingredient."
    ],
    "characteristics": [
      {
        "name": "Declared chemical identity",
        "kind": "category",
        "unit_or_values": "Chemical name, formula, charge-balanced stoichiometry and verified identifiers for the declared form",
        "why_it_matters": "Prevents an identifier for one salt or hydration state from being applied to a different material."
      },
      {
        "name": "Calcium-to-fumarate ratio",
        "kind": "measurement",
        "unit_or_values": "mol calcium/mol fumarate, with analytical methods and uncertainty",
        "why_it_matters": "Tests whether the batch composition supports the declared salt identity."
      },
      {
        "name": "Water content and hydration assignment",
        "kind": "measurement",
        "unit_or_values": "% mass water and, where established, mol water/mol salt; method and conditioning history",
        "why_it_matters": "Water changes mass-based composition and may distinguish material forms."
      },
      {
        "name": "Calcium fumarate assay",
        "kind": "measurement",
        "unit_or_values": "% mass, stating as-received, dry or anhydrous basis and method",
        "why_it_matters": "Assay values are comparable only when their chemical and moisture bases are explicit."
      },
      {
        "name": "Elemental calcium content",
        "kind": "measurement",
        "unit_or_values": "mg calcium/g material, with sample basis and method",
        "why_it_matters": "Supports material calculations without treating salt mass as elemental calcium mass."
      },
      {
        "name": "Impurity profile",
        "kind": "measurement",
        "unit_or_values": "Free fumaric acid, maleate, other ions, residual solvents and relevant contaminants in stated units",
        "why_it_matters": "Distinguishes identity failures from grade-dependent purity failures."
      },
      {
        "name": "Physical and solid-state form",
        "kind": "state",
        "unit_or_values": "Observed phase, particle form and evidence-supported hydrate or crystalline-phase assignment",
        "why_it_matters": "Material form can affect sampling, dissolution and processing behaviour."
      },
      {
        "name": "Aqueous dissolution behaviour",
        "kind": "measurement",
        "unit_or_values": "Equilibrium concentration in g/L or mol/L and dissolution time under stated temperature, pH and medium conditions",
        "why_it_matters": "Separates equilibrium solubility from dissolution rate and behaviour in a particular formulation."
      },
      {
        "name": "Thermal events",
        "kind": "measurement",
        "unit_or_values": "°C, event assignment, mass change and test atmosphere or heating rate",
        "why_it_matters": "Prevents dehydration or decomposition from being recorded as an unsupported melting or boiling point."
      },
      {
        "name": "Grade and intended-use eligibility",
        "kind": "relation",
        "unit_or_values": "Batch-to-specification and intended-use-to-jurisdiction links, with versions and evidence",
        "why_it_matters": "Chemical identity alone does not establish suitability or permission for a proposed use."
      }
    ],
    "affordances": [
      "Reconcile a supplier's calcium fumarate identity with analytical evidence and form-specific identifiers.",
      "Compare batches after normalising assay, water content and elemental calcium reporting bases.",
      "Select identity and impurity tests needed to resolve a suspected mismatch or incomplete certificate.",
      "Evaluate dissolution and thermal evidence against a proposed material-processing operation.",
      "Accept, quarantine or reject a batch against an explicit calcium fumarate specification.",
      "Identify missing evidence before authorising a grade-specific use or storage decision."
    ],
    "agent_conduct": {
      "may": [
        "Identify calcium fumarate from labels, identifiers and certificates.",
        "Report its permitted uses in food or supplements in a stated country from official sources.",
        "Check a lot against its food- or pharmaceutical-grade specification."
      ],
      "must_not": [
        "Use non-food-grade material in food or supplements.",
        "Make health claims for products containing it that the regulator has not authorized.",
        "Mislabel its content in a product."
      ],
      "requires_human": [
        "Changing a formulation sold to the public."
      ]
    },
    "ethics": {
      "considerations": [
        "Supplements are bought on trust; accurate labelling and claims protect consumers."
      ],
      "affected_parties": [
        "Consumers",
        "Food and supplement producers"
      ]
    },
    "owners": {
      "steward": "The producer that uses it; food safety authorities set the rules.",
      "master_systems": []
    },
    "visual_identification": [
      "Identity rests on the label and certificate, not on appearance."
    ],
    "failure_modes_and_hazards": [
      "Contaminated or wrong-grade material entering food.",
      "Mislabelled calcium content in supplements."
    ],
    "what_it_is_for": [
      "Calcium fumarate is encountered as a chemical reagent and as a material evaluated for calcium delivery in formulation research.",
      "Laboratory and industrial users distinguish anhydrous material from hydrated forms because water content affects composition and mass calculations.",
      "Suitability for a particular formulation depends on documented identity, purity and the requirements of the intended use."
    ],
    "standards_and_regulation": [
      "The Globally Harmonized System of Classification and Labelling of Chemicals, issued by the United Nations, provides the framework for evaluating and communicating chemical hazards for calcium fumarate where adopted."
    ]
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q836445: calcium fumarate",
      "url": "https://www.wikidata.org/wiki/Q836445",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Calcium fumarate",
      "url": "https://en.wikipedia.org/wiki/Calcium_fumarate",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "salt-identity-and-material-form",
        "name": "Salt identity and material form",
        "description": "Establish what the calcium fumarate designation means for the material being assessed.",
        "rationale": "The registry name alone does not settle ionic composition, hydration state or whether a sample is a single substance.",
        "layers": [
          {
            "id": "ionic-and-isomeric-identity",
            "name": "Ionic and isomeric identity",
            "description": "Resolve the calcium counterion, fumarate configuration and declared salt stoichiometry.",
            "findings": [
              {
                "id": "calcium-fumarate-identity-evidence",
                "name": "Evidence required for calcium fumarate identity",
                "description": "Record evidence for both ionic components and their proportions, including discrimination from maleate and free fumaric acid.",
                "questions": [
                  {
                    "text": "Which tests establish calcium and trans-fumarate identity rather than merely detecting calcium or an unspecified organic acid?",
                    "kind": "definition",
                    "id": "calcium-fumarate-identity-evidence-q01"
                  },
                  {
                    "text": "Does the measured calcium-to-fumarate ratio support the declared charge-balanced salt, or indicate an acid salt or mixture?",
                    "kind": "boundary",
                    "id": "calcium-fumarate-identity-evidence-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "hydration-and-identifier-boundaries",
            "name": "Hydration and identifier boundaries",
            "description": "Connect the demonstrated material form to its formula and external identity records.",
            "findings": [
              {
                "id": "form-specific-identity",
                "name": "Form-specific identity assignment",
                "description": "Keep hydrate assignments and identifier mappings explicit rather than inheriting them from a generic product name.",
                "questions": [
                  {
                    "text": "What evidence distinguishes an anhydrous form, a defined hydrate and calcium fumarate carrying variable surface moisture?",
                    "kind": "measurement",
                    "id": "form-specific-identity-q01"
                  },
                  {
                    "text": "Which CAS, PubChem and EC records have been checked, and does each describe the same stoichiometry and hydration state as this material?",
                    "kind": "provenance",
                    "id": "form-specific-identity-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "composition-and-batch-conformity",
        "name": "Composition and batch conformity",
        "description": "Represent the amount of calcium fumarate present and the evidence that a batch meets its declared specification.",
        "rationale": "Water, assay conventions and impurities can make apparently similar calcium fumarate batches unsuitable for the same purpose.",
        "layers": [
          {
            "id": "assay-and-calcium-accounting",
            "name": "Assay and calcium accounting",
            "description": "Make salt assay and elemental calcium measurements interpretable on consistent bases.",
            "findings": [
              {
                "id": "composition-reporting-basis",
                "name": "Composition reporting basis",
                "description": "Associate each result with the tested form, analytical method and moisture correction used.",
                "questions": [
                  {
                    "text": "Is the calcium fumarate assay reported as received, on a dry basis or on an anhydrous basis, and how was that basis established?",
                    "kind": "measurement",
                    "id": "composition-reporting-basis-q01"
                  },
                  {
                    "text": "Does measured elemental calcium agree with the declared salt assay and hydration state within the stated uncertainty?",
                    "kind": "measurement",
                    "id": "composition-reporting-basis-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "impurities-and-specifications",
            "name": "Impurities and specifications",
            "description": "Assess contaminants and compositional deviations against a traceable grade specification.",
            "findings": [
              {
                "id": "batch-release-evidence",
                "name": "Batch release evidence",
                "description": "Link impurity results and acceptance limits to the actual batch and intended grade.",
                "questions": [
                  {
                    "text": "What limits and methods apply to free fumaric acid, maleate, residual processing materials and contaminants relevant to this batch's intended use?",
                    "kind": "measurement",
                    "id": "batch-release-evidence-q01"
                  },
                  {
                    "text": "Which specification version and batch-linked certificate support acceptance, and which missing or failed results require quarantine or rejection?",
                    "kind": "action",
                    "id": "batch-release-evidence-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "physical-behaviour-and-condition",
        "name": "Physical behaviour and condition",
        "description": "Capture calcium fumarate behaviour in the solid state, in aqueous media and during thermal exposure.",
        "rationale": "An agent needs condition-specific observations to judge whether a batch will behave as required during storage and processing.",
        "layers": [
          {
            "id": "solid-state-and-thermal-response",
            "name": "Solid state and thermal response",
            "description": "Track material form and distinguish physical transitions from water loss or chemical change.",
            "findings": [
              {
                "id": "interpreted-solid-state-observations",
                "name": "Interpreted solid-state observations",
                "description": "Preserve the evidence and conditions behind assignments of hydration, phase change and decomposition.",
                "questions": [
                  {
                    "text": "Which observations establish the batch's solid-state form, and has conditioning or storage altered that assignment?",
                    "kind": "measurement",
                    "id": "interpreted-solid-state-observations-q01"
                  },
                  {
                    "text": "For each reported thermal event, what evidence identifies dehydration, melting or decomposition, and under what test conditions?",
                    "kind": "measurement",
                    "id": "interpreted-solid-state-observations-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "aqueous-behaviour",
            "name": "Aqueous behaviour",
            "description": "Describe dissolution and solution behaviour in a specified medium.",
            "findings": [
              {
                "id": "condition-specific-dissolution",
                "name": "Condition-specific dissolution evidence",
                "description": "Separate equilibrium solubility, dissolution rate and observations caused by the surrounding medium.",
                "questions": [
                  {
                    "text": "What equilibrium solubility and dissolution rate were measured for the identified form at a stated temperature, pH, particle size and medium composition?",
                    "kind": "measurement",
                    "id": "condition-specific-dissolution-q01"
                  },
                  {
                    "text": "Does a proposed aqueous operation require checking precipitation, pH change or altered dissolved species before the material can be used?",
                    "kind": "action",
                    "id": "condition-specific-dissolution-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "handling-and-use-eligibility",
        "name": "Handling and use eligibility",
        "description": "Connect calcium fumarate identity and grade to supported handling decisions and intended-use requirements.",
        "rationale": "Neither a chemical name nor a supplier's general description establishes the hazards or permitted uses of a particular material.",
        "layers": [
          {
            "id": "handling-and-storage-evidence",
            "name": "Handling and storage evidence",
            "description": "Determine precautions and condition limits from records applicable to the actual form and grade.",
            "findings": [
              {
                "id": "applicable-safety-and-storage-record",
                "name": "Applicable safety and storage record",
                "description": "Record the scope and currency of safety evidence, including unresolved hazards and storage requirements.",
                "questions": [
                  {
                    "text": "What current safety data support the hazard classification, dust precautions and any applicable exposure limits for this calcium fumarate material?",
                    "kind": "provenance",
                    "id": "applicable-safety-and-storage-record-q01"
                  },
                  {
                    "text": "Which documented temperature, humidity, packaging and incompatibility constraints govern storage, and what excursion requires retesting?",
                    "kind": "action",
                    "id": "applicable-safety-and-storage-record-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "grade-and-regulatory-use-boundaries",
            "name": "Grade and regulatory use boundaries",
            "description": "Assess a proposed use without transferring permissions between grades, products or jurisdictions.",
            "findings": [
              {
                "id": "intended-use-evidence",
                "name": "Evidence for a specified intended use",
                "description": "Link the exact substance form and batch grade to applicable requirements while leaving finished-product decisions with the relevant product model.",
                "questions": [
                  {
                    "text": "Which authoritative requirements cover this calcium fumarate form and proposed use in the specified jurisdiction, and which grade criteria do they impose?",
                    "kind": "provenance",
                    "id": "intended-use-evidence-q01"
                  },
                  {
                    "text": "Which decisions can be supported by this batch's substance evidence, and which require a separate formulation, exposure or clinical assessment?",
                    "kind": "boundary",
                    "id": "intended-use-evidence-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "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": [
                  "CAS, PubChem and EC identifiers require verification, including whether they distinguish hydration states.",
                  "Commercial hydration states, grades, applications and jurisdiction-specific permissions are not established here.",
                  "Physical constants and hazard classifications require substance-specific verification; the numerical values given are calculated for the anhydrous formula."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of calcium fumarate this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-identifiers",
                "name": "Identifiers and schemes",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "scheme": "Molecular formula",
                    "value_or_pattern": "CaC4H2O4",
                    "note": "Formula for the anhydrous salt; a hydrate would also include water."
                  },
                  {
                    "scheme": "IUPAC nomenclature",
                    "value_or_pattern": "calcium (2E)-but-2-enedioate",
                    "note": "The E configuration distinguishes fumarate from maleate."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-identifiers-q01",
                    "text": "Which of these identifiers and schemes hold for the sense of calcium fumarate this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-measurements",
                "name": "Typical measurements",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "quantity": "Molar mass of the anhydrous salt",
                    "typical_range": "154.13",
                    "unit": "g/mol"
                  },
                  {
                    "quantity": "Calculated calcium mass fraction in the pure anhydrous salt",
                    "typical_range": "26.0",
                    "unit": "%"
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-measurements-q01",
                    "text": "Which of these typical measurements hold for the sense of calcium fumarate 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": "fumaric acid",
                    "difference": "The parent acid has two carboxylic acid groups; calcium fumarate contains their doubly deprotonated anion paired with calcium."
                  },
                  {
                    "name": "calcium maleate",
                    "difference": "Maleate has the Z configuration around the carbon-carbon double bond; fumarate has the E configuration."
                  },
                  {
                    "name": "calcium citrate",
                    "difference": "Contains citrate rather than fumarate as its organic anion."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of calcium fumarate this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Does the authoritative registry intend calcium fumarate to include multiple hydration states or acid-salt variants, and which verified identifiers match that boundary?",
    "Which independently supported analytical methods best distinguish calcium fumarate from calcium maleate, free fumaric acid and mixtures of calcium-bearing materials?",
    "What reliable form-specific measurements establish solubility, solid-state behaviour and thermal decomposition, and which commonly reported constants remain unsupported?",
    "Which current grade standards and jurisdiction-specific rules explicitly cover calcium fumarate for the intended applications?",
    "What evidence establishes storage stability, applicable hazard classifications and exposure limits for the material forms actually supplied?"
  ],
  "statistics": {
    "bundles": 5,
    "layers": 9,
    "findings": 12,
    "questions": 20
  }
}
