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debug_storagerangeat

Klaytn RPC

How to use it

// yarn add @tatumio/tatum

import { TatumSDK, Klaytn, Network } from '@tatumio/tatum'
  
const tatum = await TatumSDK.init<Klaytn>({network: Network.KLAYTN})

const res = await tatum.rpc.debugStorageRangeAt(
   '0xcb632c914a18d838113f1e0cbf3ebc58e837c9497113c247001ecd52b212768e',
   1, '0x898f2afc07924f5a4f9612449e4c4f8eca527515', '0x0000000000000000000000000000000000000000000000000000000000000000', 1
)

await tatum.destroy() // Destroy Tatum SDK - needed for stopping background jobs

Overview

debug_storageRangeAt is an RPC method that allows you to retrieve the contract storage range for a given block and address. This can be useful for developers and auditors who want to inspect the storage state of a specific contract at a particular point in time. This method can also help in debugging and identifying potential issues with contract storage, as well as understanding how storage evolves as transactions are executed.

Parameters

The debug_storageRangeAt method accepts the following parameters:

  • blockHash: The block hash for which the storage range should be retrieved. Example: "0x3c4523b7e8c21e3d68f1c3af3d18e8a87c0d43e35b2c1b7f8f4e87e4d4db9c82"
  • txIndex: The transaction index within the specified block. Example: 1
  • address: The contract address for which the storage range should be retrieved. Example: "0x742d35Cc6634C0532925a3b844Bc454e4438f44e"
  • begin: The beginning of the storage range. Example: "0x0000000000000000000000000000000000000000000000000000000000000000"
  • end: The end of the storage range. Example: 1 (inclusive)

Return Object

The debug_storageRangeAt method returns an object with the following fields:

  • storage: An object that contains key-value pairs representing the contract storage, where the key is the storage slot and the value is the stored data. Example: "0x00..01": "0x00..01"
  • nextKey: A key indicating the next storage slot if the requested range is too large, otherwise null. Example: "0x00..02" or null

{% hint style="info" %}
This method is available only on the full archive node.
{% endhint %}

JSON-RPC Request and Response Examples

Request

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "debug_storageRangeAt",
  "params": [
    "0x3c4523b7e8c21e3d68f1c3af3d18e8a87c0d43e35b2c1b7f8f4e87e4d4db9c82",
    "0x1",
    "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
    "0x0000000000000000000000000000000000000000000000000000000000000000", 1
  ]
}

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "storage": {
      "0x0000000000000000000000000000000000000000000000000000000000000001": "0x0000000000000000000000000000000000000000000000000000000000000001",
      "0x0000000000000000000000000000000000000000000000000000000000000002": "0x0000000000000000000000000000000000000000000000000000000000000002"
    },
    "nextKey": "0x0000000000000000000000000000000000000000000000000000000000000065"
  }
}