{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://concert.foundation/signet/v0.1/price-mark.schema.json",
  "title": "PriceMark",
  "description": "An observed market price for a (commodity, market, product, delivery period), from a named source at a timestamp — the valuation input for mark-to-market volume and scenarios. Self-contained and commodity-generic; core graduation candidate (promoted when a second real consumer exists).",
  "type": "object",
  "required": [
    "id",
    "commodity",
    "market",
    "value",
    "markType",
    "source",
    "observedAt"
  ],
  "additionalProperties": false,
  "properties": {
    "@context": {
      "type": [
        "string",
        "object",
        "array"
      ]
    },
    "type": {
      "const": "PriceMark"
    },
    "id": {
      "$ref": "definitions.schema.json#/definitions/Identifier"
    },
    "commodity": {
      "type": "string"
    },
    "market": {
      "type": "string"
    },
    "product": {
      "type": "string"
    },
    "deliveryPeriod": {
      "type": "object",
      "required": [
        "year",
        "basis"
      ],
      "additionalProperties": false,
      "properties": {
        "year": {
          "type": "integer"
        },
        "basis": {
          "type": "string"
        }
      }
    },
    "value": {
      "type": "object",
      "required": [
        "amount",
        "currency"
      ],
      "additionalProperties": false,
      "properties": {
        "amount": {
          "type": "number"
        },
        "currency": {
          "type": "string"
        },
        "unit": {
          "type": "string"
        }
      }
    },
    "markType": {
      "type": "string"
    },
    "source": {
      "type": "object",
      "required": [
        "name"
      ],
      "additionalProperties": false,
      "properties": {
        "name": {
          "type": "string"
        },
        "feedId": {
          "type": "string"
        }
      }
    },
    "observedAt": {
      "type": "string",
      "format": "date-time"
    },
    "fxContext": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "rateSetId": {
          "type": "string"
        },
        "base": {
          "type": "string"
        }
      }
    }
  }
}