Get Opcodes Traces

Get the opcode traces for a historical transaction on the network with the given transaction ID or hash.

This method will use 5000 Compute Units.

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Get the opcode traces for a historical transaction on the network with the given transaction ID or hash

Re-executes a transaction and returns a result containing detailed information for the execution, including all values from the {@code stack}, {@code memory} and {@code storage} and the entire trace of opcodes that were executed during the replay.

Note that to provide the output, the transaction needs to be re-executed on the EVM, which may take a significant amount of time to complete if stack and memory information is requested.

GEThttps://mainnet.hedera.validationcloud.io/v1/<YOUR_API_KEY>/api/v1/contracts/results/{transactionIdOrHash}/opcodes

Path parameters

transactionIdOrHash*string

Transaction Id or a 32 byte hash with optional 0x prefix

Pattern: ^(0x)?[A-Fa-f0-9]{64}|(\d{1,10})\.(\d{1,10})\.(\d{1,10})-(\d{1,19})-(\d{1,9})$

Query parameters

Response

200400404429

OK

Body

application/json

address*string (binary)

The address of the transaction recipient in hex. Zero address is set for transactions without a recipient (e.g., contract create)

contract_id*nullable EntityId (string)

Network entity ID in the format of shard.realm.num

Example: "0.0.2"

Pattern: ^\d{1,10}\.\d{1,10}\.\d{1,10}$

failed*boolean

Whether the transaction failed to be completely processed.

gas*integer (int64)

The gas used in tinybars

opcodes*array of Opcode (object)

The logs produced by the opcode logger

return_value*string (binary)

The returned data from the transaction in hex

Request

JavaScriptCurlPythonHTTP

const response = await fetch('https://mainnet.hedera.validationcloud.io/v1/<YOUR_API_KEY>/api/v1/contracts/results/{transactionIdOrHash}/opcodes', {
    method: 'GET',
    headers: {},
});
const data = await response.json();

Response

200400404429

{
  "address": "binary",
  "contract_id": "0.0.2",
  "failed": false,
  "gas": 0,
  "opcodes": [
    {
      "depth": 0,
      "gas": 0,
      "gas_cost": 0,
      "memory": [
        "binary"
      ],
      "op": "text",
      "pc": 0,
      "reason": "binary",
      "stack": [
        "binary"
      ]
    }
  ],
  "return_value": "binary"
}