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Returns a single trace of a transaction, selected by its position in the transaction’s trace tree. This method will use 80 Compute Units.

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Parameters

hash - String - Required - The hash of a transaction indices - Array - Required - A single hexadecimal index into the flat list that trace_transaction returns for the same transaction. ["0x0"] returns the top-level call (traceAddress: []), ["0x1"] returns the next trace in that list, which is the first sub-call (traceAddress: [0]), and so on. Arc runs reth, which returns null for selectors with more than one element.

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Returns

object - The selected trace, which has 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 included
  • blockNumber - integer - The block number where this transaction was in
  • result - object - The result of the trace execution
    • gasUsed - string - The amount of gas used by this specific trace
    • output - string - The return value of the contract call, empty if no RETURN executed
  • subtraces - integer - The number of subtraces (internal calls) made by this trace
  • 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