{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Receipt",
  "description": "A computed receipt",
  "type": "object",
  "required": [
    "meta",
    "out",
    "prf",
    "ran"
  ],
  "properties": {
    "iss": {
      "anyOf": [
        {
          "$ref": "#/definitions/iss"
        },
        {
          "type": "null"
        }
      ]
    },
    "meta": {
      "title": "Receipt metadata",
      "description": "Receipt metadata including the operation that produced the receipt",
      "type": "object",
      "required": [
        "op"
      ],
      "properties": {
        "op": {
          "type": "string"
        }
      }
    },
    "out": {
      "$ref": "#/definitions/out"
    },
    "prf": {
      "$ref": "#/definitions/prf"
    },
    "ran": {
      "$ref": "#/definitions/pointer"
    }
  },
  "definitions": {
    "ipld": {
      "title": "Ipld",
      "description": "DAG-JSON encoded IPLD: https://github.com/ipld/ipld/blob/master/specs/codecs/dag-json/spec.md",
      "oneOf": [
        {
          "type": "null"
        },
        {
          "type": "boolean"
        },
        {
          "type": "number"
        },
        {
          "type": "string"
        },
        {
          "$ref": "#/definitions/ipld_bytes"
        },
        {
          "type": "array"
        },
        {
          "type": "object"
        },
        {
          "$ref": "#/definitions/ipld_link"
        }
      ]
    },
    "ipld_bytes": {
      "title": "IPLD bytes",
      "description": "Base64 encoded binary",
      "type": "object",
      "properties": {
        "/": {
          "type": "object",
          "properties": {
            "bytes": {
              "type": "string"
            }
          }
        }
      }
    },
    "ipld_link": {
      "title": "IPLD link",
      "description": "CID link that points to some IPLD data",
      "type": "object",
      "properties": {
        "/": {
          "type": "string"
        }
      }
    },
    "iss": {
      "title": "Issuer",
      "description": "Principal that issued the receipt",
      "type": "string"
    },
    "out": {
      "title": "Computation result",
      "description": "Result tuple with ok/err/just result and associated output",
      "type": "object",
      "items": [
        {
          "type": "object",
          "enum": [
            "ok",
            "error",
            "just"
          ]
        },
        {
          "$ref": "#/definitions/ipld"
        }
      ],
      "maxItems": 2,
      "minItems": 2
    },
    "pointer": {
      "description": "CID reference to an invocation, task, instruction, or receipt",
      "type": "object",
      "properties": {
        "/": {
          "type": "string"
        }
      }
    },
    "prf": {
      "description": "CIDs referencing UCAN proofs",
      "type": [
        "array"
      ],
      "items": {
        "type": "string"
      }
    }
  }
}