Chainstack documentation

# Ethereum trace_callMany RPC method

Ethereum API method that performs multiple call traces on top of the same block. i.e., transaction n will be executed on top of a pending block with all n-1 transactions applied (traced) first. Allows tracing dependent transactions.

Information

This method is available on Erigon when the trace namespace is enabled.

Learn how to deploy a node with the debug and trace API methods enabled.

Parameters:

  • array — the type of trace, one or more of:
    • vmTrace — to get a full trace of virtual machine's state during the execution of the given transaction including any subcalls.
    • trace — to get the basic trace of the given transaction.
    • statediff — to get information on altered Ethereum state due to execution of the given transaction.
  • quantity or tag — integer block number, or the string with:
    • latest — the latest block that is to be validated. The Beacon Chain may reorg and the latest block can become orphaned.
    • earliest — the genesis block.
    • pending — the pending state and transactions block.

Returns:

  • array — the block traces that have the following object shape (all return types are hexadecimal representations of their data type unless otherwise stated):
  • Output — string.
  • TransactionHash — the string of the transaction hash.
  • vmtrace — the ParityVmTrace object with:
    • code — string.
    • operations — the array of ParityVmOperationTrace objects.
  • action — the trace object with:
    • traceaddress — array.
    • calltype — string.
    • includeintrace — boolean.
    • isprecomplied — boolean.
    • type — string.
    • creation method — string.
    • from — address.
    • to — address.
    • gas — quantity.
    • value — quantity.
    • input — data.
    • result — the ParityTraceResult object with:
      • gasused — quantity.
      • output — data.
      • address — address.
      • code — data.
    • subtraces — array.
    • author — address.
    • rewardtype — string.
    • error — string.
  • statechanges — array.

Example:

  • web3.py
  • cURL 
from web3 import Web3
node_url = "CHAINSTACK_NODE_URL"
web3 = Web3.HTTPProvider(node_url)

trace = web3.make_request('trace_callMany', [
    [[{
        "from": "0x8c1b73b6061768b26d42c2d484a2ac0bf1e4b908",
        "to": "0xcbfe1217e093019bd7eeec1fd7b6165b8cd848da",
        "value": "0x58D15E17628000"
    },["trace"]],
    [{
        "from": "0x407d73d8a49eeb85d32cf465507dd71d507100c1",
        "to": "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b",
        "value": "0x186a0"
    },["trace"]]],"latest"])
print(trace)