{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://api-evangelist.github.io/aptos/json-schema/BlockMetadataTransaction.json",
  "title": "BlockMetadataTransaction",
  "type": "object",
  "description": "A block metadata transaction\n\nThis signifies the beginning of a block, and contains information\nabout the specific block",
  "required": [
    "version",
    "hash",
    "state_change_hash",
    "event_root_hash",
    "gas_used",
    "success",
    "vm_status",
    "accumulator_root_hash",
    "changes",
    "id",
    "epoch",
    "round",
    "events",
    "previous_block_votes_bitvec",
    "proposer",
    "failed_proposer_indices",
    "timestamp"
  ],
  "properties": {
    "version": {
      "$ref": "#/components/schemas/U64"
    },
    "hash": {
      "$ref": "#/components/schemas/HashValue"
    },
    "state_change_hash": {
      "$ref": "#/components/schemas/HashValue"
    },
    "event_root_hash": {
      "$ref": "#/components/schemas/HashValue"
    },
    "state_checkpoint_hash": {
      "$ref": "#/components/schemas/HashValue"
    },
    "gas_used": {
      "$ref": "#/components/schemas/U64"
    },
    "success": {
      "type": "boolean",
      "description": "Whether the transaction was successful"
    },
    "vm_status": {
      "type": "string",
      "description": "The VM status of the transaction, can tell useful information in a failure"
    },
    "accumulator_root_hash": {
      "$ref": "#/components/schemas/HashValue"
    },
    "changes": {
      "type": "array",
      "description": "Final state of resources changed by the transaction",
      "items": {
        "$ref": "#/components/schemas/WriteSetChange"
      }
    },
    "id": {
      "$ref": "#/components/schemas/HashValue"
    },
    "epoch": {
      "$ref": "#/components/schemas/U64"
    },
    "round": {
      "$ref": "#/components/schemas/U64"
    },
    "events": {
      "type": "array",
      "description": "The events emitted at the block creation",
      "items": {
        "$ref": "#/components/schemas/Event"
      }
    },
    "previous_block_votes_bitvec": {
      "type": "array",
      "description": "Previous block votes",
      "items": {
        "type": "integer",
        "format": "uint8"
      }
    },
    "proposer": {
      "$ref": "#/components/schemas/Address"
    },
    "failed_proposer_indices": {
      "type": "array",
      "description": "The indices of the proposers who failed to propose",
      "items": {
        "type": "integer",
        "format": "uint32"
      }
    },
    "timestamp": {
      "$ref": "#/components/schemas/U64"
    },
    "block_metadata_extension": {
      "allOf": [
        {
          "$ref": "#/components/schemas/BlockMetadataExtension"
        },
        {
          "description": "If some, it means the internal txn type is `aptos_types::transaction::Transaction::BlockMetadataExt`.\nOtherwise, it is `aptos_types::transaction::Transaction::BlockMetadata`.\n\nNOTE: we could have introduced a new APT txn type to represent the corresponding internal type,\nbut that is a breaking change to the ecosystem.\n\nNOTE: `oai` does not support `flatten` together with `skip_serializing_if`.",
          "default": null
        }
      ]
    }
  }
}