debug_traceBlockByHash
Retrieves detailed execution information about transactions within a given block hash.
Parameters
Blockhash
- the hash of the block to be traced.Tracer
- choose from one of these options:4byteTracer
- Solidity contract functions are addressed using the first four byte of the Keccak-256 hash of their signature. Thistracer
monitors and analyzes the usage of specific function signatures within smart contracts by capturing their unique first four bytes.callTracer
- collects data about all call frames executed within a transaction, creating a hierarchical list of call frames structured mirroring the EVM's operations. This is useful for debugging and analytical purposes.prestateTracer
- captures and analyzes the state of the blockchain before the execution of a specific transaction. It helps in understanding the state changes and effects that a transaction will have on the blockchain's data and accounts before the transaction is actually executed.noopTracer
- returns empty results. This is used for testing purpose.opcountTracer
- count and track the number of operations (or opcodes) executed during a specific transaction.unigramTracer
- counts the frequency of occurrence of each opcode.bigramTracer
- a bigram refers to a sequence of two bytes or characters. This tracer is designed to observe and provide insights into the patterns and occurrences of these two-byte sequences as they appear within the data of executed transactions.trigramTracer
- a trigram refers to a sequence of three bytes or characters. This tracer is designed to observe and provide insights into the patterns and occurrences of these three-byte sequences as they appear within the data of executed transactions.evmdisTracer
- generates the bytecode disassembly of executed transactions, providing developers with insights into how smart contracts operate at a low-level bytecode level for debugging, security audits, and performance optimization purposes.
Sample Request
curl https://lb.nodies.app/v1/<INSERT URL> \
-H "x-api-key: <API-KEY>" \
-X POST \
-H "Content-Type: application/json" \
-d '{
"method": "debug_traceBlockByHash",
"params": [
"0xe7b411f474a917139a34428450a1472d7516bc4f156647f5694d4cd376fdac8c",
{
"tracer": "prestateTracer"
}
],
"id": 1,
"jsonrpc": "2.0"
}'
Sample Response
{
"jsonrpc": "2.0",
"id": 1,
"result": [
{
"result": {
"0x2a65aca4d5fc5b5c859090a6c34d164135398226": {
"balance": "0x10ba0751b58644a920",
"nonce": 797
},
"0x6fcd2bc280cebdb8b56a36bcf2e91a499eefcacb": {
"balance": "0x2710",
"nonce": 1
},
"0x790b8a3ce86e707ed0ed32bf89b3269692a23cc1": {
"balance": "0x16482bba30e7c601b",
"nonce": 627
}
}
}
]
}
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