{
  "$defs": {
    "Identifier": {
      "description": "One identifier a row carries, in the canonical form of its scheme.",
      "properties": {
        "scheme": {
          "description": "The corpus-defined scheme name, lower case.",
          "title": "Scheme",
          "type": "string"
        },
        "value": {
          "description": "The canonical spelling of the value under its scheme.",
          "title": "Value",
          "type": "string"
        }
      },
      "required": [
        "scheme",
        "value"
      ],
      "title": "Identifier",
      "type": "object"
    },
    "ProvisionLocation": {
      "type": "string"
    },
    "SubstanceChange": {
      "description": "One recorded change to an entry printing the number.",
      "properties": {
        "act": {
          "description": "The act's key within its corpus.",
          "title": "Act",
          "type": "string"
        },
        "after": {
          "anyOf": [
            {
              "$ref": "#/$defs/TableEntry"
            },
            {
              "type": "null"
            }
          ],
          "description": "The entry after; null when removed."
        },
        "amending_acts": {
          "description": "The amending acts the change names, which may be fewer than made it.",
          "items": {
            "type": "string"
          },
          "title": "Amending Acts",
          "type": "array"
        },
        "before": {
          "anyOf": [
            {
              "$ref": "#/$defs/TableEntry"
            },
            {
              "type": "null"
            }
          ],
          "description": "The entry before; null when added."
        },
        "corpus": {
          "description": "The act's corpus namespace.",
          "title": "Corpus",
          "type": "string"
        },
        "dated": {
          "description": "The version's in-force date, else the day it was seen.",
          "format": "date",
          "title": "Dated",
          "type": "string"
        },
        "event": {
          "description": "The permalink of the change block on its version page.",
          "title": "Event",
          "type": "string"
        },
        "file": {
          "description": "The payload the change was read from.",
          "title": "File",
          "type": "string"
        },
        "header": {
          "description": "The table's header rows.",
          "items": {
            "items": {
              "anyOf": [
                {
                  "type": "string"
                },
                {
                  "type": "null"
                }
              ]
            },
            "type": "array"
          },
          "title": "Header",
          "type": "array"
        },
        "in_force": {
          "description": "True when `dated` is the in-force date.",
          "title": "In Force",
          "type": "boolean"
        },
        "key_label": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "description": "How the act names the key; null for a name key.",
          "title": "Key Label"
        },
        "kind": {
          "description": "`added`, `amended` or `removed`.",
          "enum": [
            "added",
            "removed",
            "amended"
          ],
          "title": "Kind",
          "type": "string"
        },
        "label": {
          "description": "The act's short label on this site.",
          "title": "Label",
          "type": "string"
        },
        "typography_only": {
          "description": "Amended only in spacing, dash forms or accents.",
          "title": "Typography Only",
          "type": "boolean"
        },
        "version": {
          "description": "The version the change was recorded in.",
          "title": "Version",
          "type": "string"
        }
      },
      "required": [
        "corpus",
        "act",
        "label",
        "version",
        "dated",
        "in_force",
        "kind",
        "typography_only",
        "key_label",
        "header",
        "before",
        "after",
        "amending_acts",
        "event",
        "file"
      ],
      "title": "SubstanceChange",
      "type": "object"
    },
    "SubstanceEntry": {
      "description": "One entry of an act's newest version that prints the number, as its register holds it.",
      "properties": {
        "act": {
          "description": "The act's key within its corpus.",
          "title": "Act",
          "type": "string"
        },
        "act_page": {
          "description": "The act's page.",
          "title": "Act Page",
          "type": "string"
        },
        "corpus": {
          "description": "The act's corpus namespace.",
          "title": "Corpus",
          "type": "string"
        },
        "entry": {
          "$ref": "#/$defs/TableEntry",
          "description": "The entry, its rows verbatim."
        },
        "header": {
          "description": "The table's header rows.",
          "items": {
            "items": {
              "anyOf": [
                {
                  "type": "string"
                },
                {
                  "type": "null"
                }
              ]
            },
            "type": "array"
          },
          "title": "Header",
          "type": "array"
        },
        "key_label": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "description": "How the act names the key; null for a name key.",
          "title": "Key Label"
        },
        "label": {
          "description": "The act's short label on this site.",
          "title": "Label",
          "type": "string"
        },
        "last_changed": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "description": "The permalink of the newest recorded change to this entry; null for none.",
          "title": "Last Changed"
        },
        "provision_page": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "description": "The unit's page, where a recorded change touched it; else null.",
          "title": "Provision Page"
        },
        "version": {
          "description": "The version the register was read from.",
          "title": "Version",
          "type": "string"
        }
      },
      "required": [
        "corpus",
        "act",
        "label",
        "version",
        "key_label",
        "header",
        "entry",
        "act_page",
        "provision_page",
        "last_changed"
      ],
      "title": "SubstanceEntry",
      "type": "object"
    },
    "TableEntry": {
      "description": "A keyed group of rows, with its identifiers and its cells verbatim.",
      "properties": {
        "container": {
          "$ref": "#/$defs/ProvisionLocation",
          "description": "The deepest located node holding the table, as the tree places it."
        },
        "failed_check_digits": {
          "default": 0,
          "description": "Identifier-shaped values in identifier columns that fail.",
          "minimum": 0,
          "title": "Failed Check Digits",
          "type": "integer"
        },
        "group": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "default": null,
          "description": "Verbatim heading of the innermost block the rows sit in.",
          "title": "Group"
        },
        "identifiers": {
          "default": [],
          "description": "Sorted, deduplicated, and valid under the scheme's check.",
          "items": {
            "$ref": "#/$defs/Identifier"
          },
          "title": "Identifiers",
          "type": "array"
        },
        "key": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "description": "The row key by the adapter's rule; `None` is an unkeyed row, kept and counted.",
          "title": "Key"
        },
        "name": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "default": null,
          "description": "First line of the name cell; a leading entry number and its `.` dropped.",
          "title": "Name"
        },
        "occurrence": {
          "default": 1,
          "description": "1-based among this table's entries sharing this key.",
          "minimum": 1,
          "title": "Occurrence",
          "type": "integer"
        },
        "rows": {
          "description": "Every row of the entry, cells verbatim; `None` where a span covers.",
          "items": {
            "items": {
              "anyOf": [
                {
                  "type": "string"
                },
                {
                  "type": "null"
                }
              ]
            },
            "type": "array"
          },
          "title": "Rows",
          "type": "array"
        },
        "table": {
          "description": "1-based ordinal among every table in the container.",
          "minimum": 1,
          "title": "Table",
          "type": "integer"
        },
        "unit": {
          "$ref": "#/$defs/ProvisionLocation",
          "description": "The top-level unit the table sits in."
        }
      },
      "required": [
        "unit",
        "container",
        "table",
        "key",
        "rows"
      ],
      "title": "TableEntry",
      "type": "object"
    }
  },
  "$id": "substance.schema.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "description": "One CAS or EC number: every entry that prints it now, and every change to such entries.",
  "properties": {
    "canonical": {
      "description": "The page a search engine is pointed at for it.",
      "title": "Canonical",
      "type": "string"
    },
    "disclaimer": {
      "default": "Not legal advice: this output is machine-computed from published texts, carries no lawyer's review, and is engineering assistance only.",
      "description": "Not legal advice.",
      "title": "Disclaimer",
      "type": "string"
    },
    "entries": {
      "description": "Act order, then document order.",
      "items": {
        "$ref": "#/$defs/SubstanceEntry"
      },
      "title": "Entries",
      "type": "array"
    },
    "history": {
      "description": "Newest first.",
      "items": {
        "$ref": "#/$defs/SubstanceChange"
      },
      "title": "History",
      "type": "array"
    },
    "identifiers": {
      "description": "Every identifier the entries' rows carry, this one included.",
      "items": {
        "$ref": "#/$defs/Identifier"
      },
      "title": "Identifiers",
      "type": "array"
    },
    "page": {
      "description": "This number's page.",
      "title": "Page",
      "type": "string"
    },
    "provenance": {
      "default": "Derived by the site build from the committed registers and changelogs; not part of the record.",
      "description": "Where this file comes from.",
      "title": "Provenance",
      "type": "string"
    },
    "scheme": {
      "description": "`cas` or `ec`.",
      "title": "Scheme",
      "type": "string"
    },
    "substance_schema": {
      "default": "1.0",
      "description": "This format's version.",
      "title": "Substance Schema",
      "type": "string"
    },
    "value": {
      "description": "The canonical value.",
      "title": "Value",
      "type": "string"
    }
  },
  "required": [
    "scheme",
    "value",
    "page",
    "canonical",
    "identifiers",
    "entries",
    "history"
  ],
  "title": "substance",
  "type": "object"
}