Hedera · Schema

Topic

Distributed LedgerBlockchainDLTHashgraphTransactionsTokensNFTsSmart ContractsEnterprise

Properties

Name Type Description
admin_key object
auto_renew_account object
auto_renew_period integernull The amount of time to attempt to extend the topic's lifetime after expiration.
created_timestamp object
custom_fees object
deleted booleannull Whether the topic is deleted or not.
fee_exempt_key_list array Keys permitted to submit messages to the topic without paying custom fees
fee_schedule_key object
memo string The memo associated with the topic.
submit_key object
timestamp object
topic_id object
View JSON Schema on GitHub

JSON Schema

Topic.json Raw ↑ 
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/hedera/refs/heads/main/json-schema/Topic.json",
  "title": "Topic",
  "type": "object",
  "properties": {
    "admin_key": {
      "$ref": "#/components/schemas/Key"
    },
    "auto_renew_account": {
      "$ref": "#/components/schemas/EntityId"
    },
    "auto_renew_period": {
      "description": "The amount of time to attempt to extend the topic's lifetime after expiration.",
      "example": 7776000,
      "format": "int64",
      "type": [
        "integer",
        "null"
      ]
    },
    "created_timestamp": {
      "$ref": "#/components/schemas/TimestampNullable"
    },
    "custom_fees": {
      "$ref": "#/components/schemas/ConsensusCustomFees"
    },
    "deleted": {
      "description": "Whether the topic is deleted or not.",
      "example": false,
      "type": [
        "boolean",
        "null"
      ]
    },
    "fee_exempt_key_list": {
      "description": "Keys permitted to submit messages to the topic without paying custom fees",
      "type": "array",
      "items": {
        "$ref": "#/components/schemas/Key"
      }
    },
    "fee_schedule_key": {
      "$ref": "#/components/schemas/Key"
    },
    "memo": {
      "description": "The memo associated with the topic.",
      "example": "topic memo",
      "type": "string"
    },
    "submit_key": {
      "$ref": "#/components/schemas/Key"
    },
    "timestamp": {
      "$ref": "#/components/schemas/TimestampRange"
    },
    "topic_id": {
      "$ref": "#/components/schemas/EntityId"
    }
  },
  "required": [
    "admin_key",
    "auto_renew_account",
    "auto_renew_period",
    "created_timestamp",
    "custom_fees",
    "deleted",
    "fee_exempt_key_list",
    "fee_schedule_key",
    "memo",
    "submit_key",
    "timestamp",
    "topic_id"
  ]
}