{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://concert.foundation/signet/v0.1/contract.schema.json",
  "title": "Contract",
  "description": "The binding agreement (OCDS contract stage).",
  "type": "object",
  "required": [
    "id",
    "parties",
    "title",
    "value",
    "period"
  ],
  "additionalProperties": false,
  "properties": {
    "@context": {
      "type": [
        "string",
        "object",
        "array"
      ]
    },
    "type": {
      "const": "Contract"
    },
    "id": {
      "$ref": "definitions.schema.json#/definitions/Identifier"
    },
    "award": {
      "$ref": "definitions.schema.json#/definitions/Identifier",
      "description": "The award it derives from."
    },
    "parties": {
      "type": "array",
      "minItems": 1,
      "items": {
        "$ref": "definitions.schema.json#/definitions/Identifier"
      }
    },
    "title": {
      "type": "string"
    },
    "value": {
      "$ref": "definitions.schema.json#/definitions/Value"
    },
    "period": {
      "$ref": "definitions.schema.json#/definitions/Period"
    },
    "obligations": {
      "type": "array",
      "items": {
        "$ref": "https://concert.foundation/signet/v0.1/obligation.schema.json"
      }
    },
    "documents": {
      "type": "array",
      "items": {
        "$ref": "definitions.schema.json#/definitions/Document"
      }
    },
    "governingPolicies": {
      "type": "array",
      "items": {
        "$ref": "definitions.schema.json#/definitions/Identifier"
      }
    }
  }
}