{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "IrmHistoryItem",
  "type": "object",
  "description": "Historical interest rate model change",
  "properties": {
    "interestRateModel": {
      "type": "string",
      "description": "Interest rate model contract address"
    },
    "blockNumber": {
      "type": "string",
      "description": "Block number of the change"
    },
    "timestamp": {
      "type": "string",
      "format": "date-time",
      "description": "Timestamp of the change"
    },
    "txHash": {
      "type": "string",
      "description": "Transaction hash"
    },
    "logIndex": {
      "type": "integer",
      "description": "Log index within the transaction receipt."
    }
  }
}