{
  "schemaVersion": 1,
  "timestampSemantics": "The original source timestamp integer is preserved unchanged. The release builder does not apply timezone conversion.",
  "partitionSemantics": "Manifest MM-YY filenames are normalized to MM-YYYY. Example: 01-25.json -> 01-2025.csv in staging and file_code=01-2025 publicly.",
  "symbolSemantics": "A leading '$' in manifest index symbols is removed before public output. Example: $INX -> INX.",
  "volumeSemantics": "The current index staging pipeline does not populate volume. The public volume column is retained as nullable for schema stability.",
  "daily": {
    "timestamp": {
      "type": "int64",
      "description": "Original source timestamp integer, unchanged."
    },
    "open": {
      "type": "float64",
      "description": "Opening index value."
    },
    "high": {
      "type": "float64",
      "description": "High index value."
    },
    "low": {
      "type": "float64",
      "description": "Low index value."
    },
    "close": {
      "type": "float64",
      "description": "Closing index value."
    },
    "volume": {
      "type": "float64",
      "nullable": true,
      "description": "Reserved volume field; current index staging data does not populate it."
    },
    "index_name": {
      "type": "string",
      "description": "Human-readable index name."
    },
    "symbol": {
      "type": "string",
      "description": "Normalized index symbol with any leading '$' removed."
    },
    "dataset": {
      "type": "string",
      "description": "Public dataset family."
    },
    "provider": {
      "type": "string",
      "description": "Index provider from the source manifest."
    },
    "group": {
      "type": "string",
      "description": "Broad index group/classification."
    },
    "subgroup": {
      "type": "string",
      "description": "More specific index subgroup/classification."
    },
    "file_code": {
      "type": "string",
      "description": "Normalized monthly partition code in MM-YYYY format."
    }
  },
  "minute": {
    "timestamp": {
      "type": "int64",
      "description": "Original source timestamp integer, unchanged."
    },
    "open": {
      "type": "float64",
      "description": "Opening index value."
    },
    "high": {
      "type": "float64",
      "description": "High index value."
    },
    "low": {
      "type": "float64",
      "description": "Low index value."
    },
    "close": {
      "type": "float64",
      "description": "Closing index value."
    },
    "volume": {
      "type": "float64",
      "nullable": true,
      "description": "Reserved volume field; current index staging data does not populate it."
    },
    "index_name": {
      "type": "string",
      "description": "Human-readable index name."
    },
    "symbol": {
      "type": "string",
      "description": "Normalized index symbol with any leading '$' removed."
    },
    "dataset": {
      "type": "string",
      "description": "Public dataset family."
    },
    "provider": {
      "type": "string",
      "description": "Index provider from the source manifest."
    },
    "group": {
      "type": "string",
      "description": "Broad index group/classification."
    },
    "subgroup": {
      "type": "string",
      "description": "More specific index subgroup/classification."
    },
    "file_code": {
      "type": "string",
      "description": "Normalized monthly partition code in MM-YYYY format."
    }
  }
}