{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/arjoma/scheinfirmen-at/main/data/scheinfirmen.json-schema.json",
  "title": "Scheinfirma",
  "description": "A company or person listed on the Austrian BMF Scheinfirmen (shell company) list",
  "type": "object",
  "required": [
    "name",
    "anschrift",
    "veroeffentlicht",
    "rechtskraeftig"
  ],
  "additionalProperties": false,
  "properties": {
    "name": {
      "type": "string",
      "description": "Name of the company or natural person",
      "minLength": 1
    },
    "anschrift": {
      "type": "string",
      "description": "Address (PLZ Ort, Strasse Nr)",
      "minLength": 1
    },
    "veroeffentlicht": {
      "type": "string",
      "format": "date",
      "description": "Publication date (ISO 8601)"
    },
    "rechtskraeftig": {
      "type": "string",
      "format": "date",
      "description": "Date the decree became legally binding (ISO 8601)"
    },
    "seit": {
      "type": [
        "string",
        "null"
      ],
      "format": "date",
      "description": "Date designated as shell company (ISO 8601)"
    },
    "geburtsdatum": {
      "type": [
        "string",
        "null"
      ],
      "format": "date",
      "description": "Birth date for natural persons (ISO 8601)"
    },
    "fbnr": {
      "type": [
        "string",
        "null"
      ],
      "description": "Company register number (Firmenbuchnummer)",
      "pattern": "^\\d{5,6}[a-zA-Z]$"
    },
    "uid": {
      "type": [
        "string",
        "null"
      ],
      "description": "VAT identification number (UID-Nummer). Normally Austrian (ATU + 8 digits), but the BMF list occasionally contains foreign EU VAT numbers (e.g. RO…, DE…) which the normalization step preserves in this field.",
      "pattern": "^[A-Z]{2}[A-Z0-9]{6,12}$"
    },
    "kennziffer": {
      "type": [
        "string",
        "null"
      ],
      "description": "Register reference code (Kennziffer des Unternehmensregisters)"
    }
  }
}