Traces

Traces keep track of the actions that modify the internal state of the EVM.

Typically, trace_id for traces are unique, unless there are duplicate transactions on the blockchain.

Refer to Traces ID and Address for more information and examples.

Table Columns

Column Name	Description	Example
transaction_hash	Unique identifier of the transaction that contains this trace.	0x5bb892abdddcbf71c9e0972a4ac39e3445a49d57c684f90e2d3c5efa80e2bb93
transaction_index	The position of this transaction in the block that it belongs to. The first transaction has index 0.	1
from_address	The address of the sending party of this trace.	0x75ca8f6c82df5fdfd09049f46ad5d072b0a53bf6
to_address	The address of the receiving party of this trace (null for contract creation).	0x43bfe4438dc0ebfde7af5daf51a62c6ade30256a
value	The amount of ether moved from the from_address to to_address.	0
input	The bytecode of the call that is made to another smart contract.	0xa612dea4000000000000000000000000ee5313afef962fffaceeb232321ef26cdbc5502d000000000000000000000000662d765944f1b28d4430ee236aaa86aae4d241b900000000000000000000000055d398326f99059ff775485246999027b3197955000000000000000000000000000000000000000000000005bf0ba6634f67f151
selector	Selector of the txn.	0xa612dea4
output	The bytecode answer the smart contract that was called gives back.	0x0000000000000000000000000000000000000000000000000000000000000001
trace_type	The value of the method such as call, create, create2, suicide.	call
call_type	The type of method such as call, delegatecall, staticcall. Learn more here.	call
reward_type	Populated when trace_type =reward. Possible values: block, uncle
gas	Gas provided with the trace call, in wei.	44866
gas_used	The amount of gas consumed, in wei.	5157
subtraces	Number of children traces.	0
trace_address	The address of the trace within the call graph. More detail to come soon.	10
error	Human readable developer error message. Examples: "Out of gas", "Reverted", "Bad instruction", "Bad jump destination".
status	Success status of the trace. Either 1 (success) or 0 (failure). Error messages take precedence over trace status. Note that debug_trace methods may still return status = 1 for error traces.	1
block_timestamp	The time when the block that contains this log was included on the blockchain.	2020-09-12 12:30:16+00:00
block_number	The length of the chain, in blocks.	414012
block_hash	Unique identifier of the block that includes this log.	0xad1759de1409a6e53a5903793b439c3f1e2bc5f6f028ff2a4e022d4da320e2be
trace_id	Unique identifier for this trace. Generated by combining the trace_type, transaction_hash and trace_address.	call_0x5bb892abdddcbf71c9e0972a4ac39e3445a49d57c684f90e2d3c5efa80e2bb93_10
_created_at	Timestamp of the entry creation.	NaT
_updated_at	Timestamp of the entry update.	NaT

Additional Info

Trace Address field different from Etherscan/Explorers

The number of traces Allium has indexed for this transaction is 12, whereas if you count the number of traces that Etherscan has on this page, you'll notice that it is 11. Etherscan has chosen to leave out certain types of traces and coupled with how trace addresses are generated, it will result in a different trace address numbering scheme.

In the example above, the trace in the example as indexed by Allium is {0,0,2,0} whereas on Etherscan/Block Explorer it's as follows: