{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/flow-blockchain/main/json-schema/transaction.json",
  "title": "Transaction",
  "description": "A Flow blockchain transaction with Cadence script, arguments, signatures, and result.",
  "type": "object",
  "required": ["id", "script", "arguments", "reference_block_id", "gas_limit", "payer", "proposal_key", "authorizers", "payload_signatures", "envelope_signatures", "_expandable"],
  "properties": {
    "id": {
      "description": "A 32-byte unique identifier for an entity.",
      "type": "string",
      "format": "hexadecimal",
      "pattern": "[a-fA-F0-9]{64}"
    },
    "script": {
      "type": "string",
      "format": "base64",
      "description": "Base64 encoded Cadence script."
    },
    "arguments": {
      "type": "array",
      "description": "Array of Base64 encoded arguments in JSON-Cadence interchange format.",
      "items": { "type": "string", "format": "byte" }
    },
    "reference_block_id": {
      "description": "A 32-byte unique identifier for an entity.",
      "type": "string",
      "format": "hexadecimal",
      "pattern": "[a-fA-F0-9]{64}"
    },
    "gas_limit": {
      "type": "string",
      "format": "uint64",
      "description": "The limit on the amount of computation a transaction is allowed to perform."
    },
    "payer": {
      "description": "The 8-byte address of an account.",
      "type": "string",
      "format": "hexadecimal",
      "pattern": "[a-fA-F0-9]{16}"
    },
    "proposal_key": {
      "type": "object",
      "required": ["address", "key_index", "sequence_number"],
      "properties": {
        "address": {
          "description": "The 8-byte address of an account.",
          "type": "string",
          "format": "hexadecimal",
          "pattern": "[a-fA-F0-9]{16}"
        },
        "key_index": { "type": "string", "format": "uint64" },
        "sequence_number": { "type": "string", "format": "uint64" }
      }
    },
    "authorizers": {
      "type": "array",
      "items": {
        "description": "The 8-byte address of an account.",
        "type": "string",
        "format": "hexadecimal",
        "pattern": "[a-fA-F0-9]{16}"
      }
    },
    "payload_signatures": {
      "type": "array",
      "description": "A list of Base64 encoded signatures.",
      "items": {
        "type": "object",
        "required": ["address", "key_index", "signature"],
        "properties": {
          "address": {
            "description": "The 8-byte address of an account.",
            "type": "string",
            "format": "hexadecimal",
            "pattern": "[a-fA-F0-9]{16}"
          },
          "key_index": { "type": "string", "format": "uint64" },
          "signature": { "type": "string", "format": "byte", "description": "A variable length signature." }
        }
      }
    },
    "envelope_signatures": {
      "type": "array",
      "description": "A list of Base64 encoded signatures.",
      "items": {
        "type": "object",
        "required": ["address", "key_index", "signature"],
        "properties": {
          "address": {
            "description": "The 8-byte address of an account.",
            "type": "string",
            "format": "hexadecimal",
            "pattern": "[a-fA-F0-9]{16}"
          },
          "key_index": { "type": "string", "format": "uint64" },
          "signature": { "type": "string", "format": "byte", "description": "A variable length signature." }
        }
      }
    },
    "result": {
      "type": "object",
      "description": "The result of the transaction execution.",
      "required": ["block_id", "collection_id", "status", "status_code", "error_message", "computation_used", "events"],
      "properties": {
        "block_id": { "type": "string", "format": "hexadecimal", "pattern": "[a-fA-F0-9]{64}" },
        "collection_id": { "type": "string", "format": "hexadecimal", "pattern": "[a-fA-F0-9]{64}" },
        "execution": {
          "type": "string",
          "description": "Indicates whether the transaction execution succeeded or not.",
          "enum": ["Pending", "Success", "Failure"]
        },
        "status": {
          "type": "string",
          "description": "The state of the transaction execution. Only sealed and expired are final states.",
          "enum": ["Pending", "Finalized", "Executed", "Sealed", "Expired"]
        },
        "status_code": { "type": "integer" },
        "error_message": { "type": "string", "description": "Provided transaction error in case the transaction was not successful." },
        "computation_used": { "type": "string", "format": "uint64" },
        "events": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["type", "transaction_id", "transaction_index", "event_index", "payload"],
            "properties": {
              "type": { "type": "string" },
              "transaction_id": { "type": "string", "format": "hexadecimal", "pattern": "[a-fA-F0-9]{64}" },
              "transaction_index": { "type": "string", "format": "uint64" },
              "event_index": { "type": "string", "format": "uint64" },
              "payload": { "type": "string", "format": "byte" }
            }
          }
        }
      }
    },
    "_expandable": {
      "type": "object",
      "properties": {
        "result": { "type": "string", "format": "uri" }
      }
    },
    "_links": {
      "type": "object",
      "properties": {
        "_self": { "type": "string" }
      }
    }
  }
}