> For the complete documentation index, see [llms.txt](https://docs.storageproofs.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.storageproofs.com/solutions/storage-proof-api/payload-examples.md).

# Payload Examples

Here are 4 different sample batch query payloads for Header Access, Account Access, Account Storage Access, and an additional example. Let's go through each of them:

## Header Access

```json
{
  "destinationChainId": "SN_SEPOLIA",
  "fee": "0",
  "data": {
    "11155111": {
      "block:5856869": {
        "header": [
          "STATE_ROOT",
          "TIMESTAMP",
          "BLOCK_NUMBER",
          "GAS_LIMIT",
          "GAS_USED"
        ]
      }
    }
  }
}
```

This query is requesting specific header information from block 5856869 on the Sepolia testnet (chain ID 11155111). It's asking for the state root, timestamp, block number, gas limit, and gas used. The results will be proven and made available on the Starknet Sepolia network (`SN_SEPOLIA`). This query is useful for accessing and verifying key block header information across different networks.

Example request: <https://dashboard.herodotus.dev/explorer/query/01J2VM6636VWW45ZRPGEQEZ5E5>

## Account Access

```json
{
  "destinationChainId": "11155111",
  "fee": "0",
  "data": {
    "11155111": {
      "block:5150551": {
        "accounts": {
          "0x17C2D875CB397D813eAE817DaFD25807E348Df07": {
            "props": ["BALANCE"],
            "slots": []
          }
        }
      }
    }
  }
}
```

This query is focused on retrieving the balance of a specific Ethereum account (`0x17C2D875CB397D813eAE817DaFD25807E348Df07`) at block 5150551 on the Sepolia testnet. The query is both initiated and proven on the Sepolia network (chain ID 11155111). This type of query is helpful for verifying an account's balance at a specific point in time, which could be useful for various financial applications or audits.

Example request: <https://dashboard.herodotus.dev/explorer/query/01J2VM6JSA6VKKZ0ENWGYYPR18>

## Account Storage Access

```json
{
  "destinationChainId": "SN_SEPOLIA",
  "fee": "0",
  "data": {
    "11155111": {
      "block:5856869": {
        "accounts": {
          "0x76a1b9e4712e45c4c3d0ac6e2c3028ee0ce4d3b0": {
            "props": ["STORAGE_ROOT"],
            "slots": [
              "0x000000000000000000000000000000000000000000000000000000000000000b"
            ]
          }
        }
      }
    }
  }
}
```

This query is requesting the storage root and the value of a specific storage slot (`0x000000000000000000000000000000000000000000000000000000000000000b`) for a particular account (`0x76a1b9e4712e45c4c3d0ac6e2c3028ee0ce4d3b0`) at block 5856869 on the Sepolia testnet. The results will be proven on the Starknet Sepolia network. This type of query allows verification of specific data stored within a contract.

Example request: <https://dashboard.herodotus.dev/explorer/query/01J2VM6Y5JH6BG3AP73K3YJRM7>

## Additional Example (Multiple Data Points):

This more complex query combines multiple types of data requests in a single batch. It's requesting:

* Header information (state root and timestamp) for block `6373286`
* Balance, nonce, and storage root for the account associated with the ENS name `kozi.eth`
* Code hash and a specific storage slot value for the account `0x08210F9170F89Ab7658F0B5E3fF39b0E03C594D4`

{% hint style="info" %}
Remember to replace "<https://your-webhook-url.com/callback>" with your actual webhook URL where you want to receive the results.
{% endhint %}

```json
{
    "destinationChainId": "11155111",
    "fee": "0",
    "data": {
        "11155111": {
            "block:6373286": {
                "header": [
                    "STATE_ROOT",
                    "TIMESTAMP"
                ],
                "accounts": {
                    "kozi.eth": {
                        "props": [
                            "BALANCE",
                            "NONCE",
                            "STORAGE_ROOT"
                        ],
                        "slots": []
                    },
                    "0x08210F9170F89Ab7658F0B5E3fF39b0E03C594D4": {
                        "props": [
                            "CODE_HASH"
                        ],
                        "slots": [
                            "0x0000000000000000000000000000000000000000000000000000000000000001"
                        ]
                    }
                }
            }
        }
    },
    "webhook": {
        "url": "https://your-webhook-url.com/callback",
        "headers": {
            "Content-Type": "application/json"
        }
    }
}
```

These examples demonstrate different ways to use the Storage Proof API for accessing various types of blockchain data. The results will be sent to the specified webhook URL, allowing for asynchronous processing of the data once it's available.

Example request:&#x20;

<https://dashboard.herodotus.dev/explorer/query/01J3N2MB216H2QFBS91JJC6QRF>