> For the complete documentation index, see [llms.txt](https://docs.validationcloud.io/v1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.validationcloud.io/v1/arc/trace-api/trace_block.md).

# trace\_block

Returns traces created at given block.

This method will use `80` [Compute Units](/v1/about/billing.md).

***

## **Parameters**

`blockNumber` - String - <mark style="color:red;">Required</mark> - The block number as a string in hexadecimal format or tags. The supported tag values include:

* `earliest` - For the earliest/genesis block
* `latest` for the latest mined block
* `safe` for the most recent secure block
* `finalized` for the most recent secure block accepted by more than 2/3 of validators

## **Returns**

`array` - The block traces, which have the following fields (all return types are hexadecimal unless otherwise noted):

* `action` - object The ParityTrace action object containing call details
  * `from` - string - The address of the sender
  * `callType` - string - The type of method such as call, staticcall, delegatecall
  * `gas` - string - The gas provided by the sender, encoded as hexadecimal
  * `input` - string - The input data sent along with the transaction
  * `to` - string - The address of the receiver
  * `value` - string - The integer of the value sent with this transaction, encoded as hexadecimal
* `blockHash` - string - The hash of the block where this transaction was in
* `blockNumber` - integer - The block number where this transaction was in
* `result` - object - The ParityTrace result object containing execution outcome
  * `gasUsed` - string -The amount of gas used by this specific transaction
  * `output` - string - The return value of the contract call, empty if no RETURN executed
* `subtraces` - integer - The number of subtraces (internal calls) made by the transaction
* `traceAddress` - array - The list of addresses where the call executed, including parent addresses and call order
* `transactionHash` - string - The hash of the transaction
* `transactionPosition` - integer - The transaction index position within the block
* `type` - string - The type of the trace, such as call or create
* `error` - string - The error message, if any

```bash
// Result
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
      {
        "action": {
          "from": "0x786d1ecc7ad626f48d6d95ccb2c0500e52e4a15b",
          "callType": "call",
          "gas": "0x168ef8",
          "input": "0xa9059cbb0000000000000000000000009406c483929bac16a41efae8665d8dab68c33eea0000000000000000000000000000000000000000000000000000000002fa2d30",
          "to": "0x20c0000000000000000000000000000000000000",
          "value": "0x0"
        },
        "blockHash": "0xe1dd033a33e1b2be07a6c3f5256b177b0e09f2d81f8f306eb0a3bb19203d47c2",
        "blockNumber": 8148608,
        "result": {
          "gasUsed": "0x7cf1e",
          "output": "0x0000000000000000000000000000000000000000000000000000000000000001"
        },
        "subtraces": 0,
        "traceAddress": [],
        "transactionHash": "0x9c5c434a92a5efa222d510a77e35d0e0b02b607cf31195dcb80c536271060ebd",
        "transactionPosition": 0,
        "type": "call"
      },
      {
        "action": {
          "from": "0xe7667c20ef0d18721ea91f327d7cbb3fe83b66fc",
          "gas": "0x127e754",
          "init": "0x608060405260405162001480...",
          "value": "0x0",
          "creationMethod": "create"
        },
        "blockHash": "0xe1dd033a33e1b2be07a6c3f5256b177b0e09f2d81f8f306eb0a3bb19203d47c2",
        "blockNumber": 8148608,
        "result": {
          "address": "0x27b1bb23c768bac9e08384e3135c4ccc7fbc92ec",
          "code": "0x60806040526004361061009f...",
          "gasUsed": "0x636c29"
        },
        "subtraces": 0,
        "traceAddress": [],
        "transactionHash": "0x9e2eea4b46aa76ed8c30a57d9bdbc68a16becba529f0d665788e748476db0dad",
        "transactionPosition": 1,
        "type": "create"
      }
      // ...
    ]
  }
```

{% tabs %}
{% tab title="testnet" %}

```bash
curl https://testnet.arc.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"trace_block","params":["0x7c5680"],"id":1}'
    
```

{% endtab %}
{% endtabs %}


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