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debug_traceBlockByHash

Retrieves detailed execution information about transactions within a given block hash.

Parameters

  1. Blockhash - the hash of the block to be traced.

  2. 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. This tracer 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": [
    "0x553d91fdc67ece85d294ec115013c304a640eccfec8d4e44efbbd181e683777a",
    {
      "tracer": "4byteTracer"
    }
  ],
  "id": 1,
  "jsonrpc": "2.0"
}'

Sample Response

{
   "jsonrpc": "2.0",
   "id": 1,
   "result": [
      {
         "result": {
            "0x128acb08-192": 1,
            "0x3850c7bd-0": 1,
            "0x70a08231-32": 5,
            "0xbbc065c9-64": 2
         }
      },
      {
         "result": {
            "0x0000001b-45": 1,
            "0x128acb08-224": 1
         }
      },
      {
         "result": {
            "0x128acb08-192": 1,
            "0x3850c7bd-0": 1,
            "0x70a08231-32": 5,
            "0xbbc065c9-64": 2
         }
      },
      {
         "result": {
            "0x43a54c65-160": 1,
            "0xe76c01e4-0": 1
         }
      },
      {
         "result": {
            "0x128acb08-192": 1,
            "0x70a08231-32": 5,
            "0xbbc065c9-64": 2,
            "0xe76c01e4-0": 1
         }
      },
      {
         "result": {
            "0x128acb08-384": 1,
            "0x1dd486f2-160": 1,
            "0x23b872dd-96": 2,
            "0x2c8958f6-320": 1,
            "0x36e52fee-96": 1,
            "0x430bf08a-0": 1,
            "0x70a08231-32": 4,
            "0x7f376059-32": 1,
            "0xa9059cbb-64": 3,
            "0xbc651188-224": 1,
            "0xc53a182f-128": 1
         }
      },
      {
         "result": {
            "0x00000032-96": 1,
            "0x128acb08-224": 1,
            "0x287fc58c-142": 1,
            "0x70a08231-32": 5,
            "0xa9059cbb-64": 3,
            "0xfa461e33-128": 1
         }
      },
      {
         "result": {
            "0x00000032-96": 1,
            "0x0becf642-142": 1,
            "0x128acb08-224": 1,
            "0x70a08231-32": 5,
            "0xa9059cbb-64": 3,
            "0xfa461e33-128": 1
         }
      },
      {
         "result": {
            "0x09c5eabe-11424": 2,
            "0x585a9fd4-576": 2,
            "0x73e3d66a-10432": 1
         }
      },
      {
         "result": {
            "0x04e45aaf-224": 1,
            "0x095ea7b3-64": 2,
            "0x128acb08-384": 1,
            "0x1a686502-0": 2,
            "0x23b872dd-96": 2,
            "0x3850c7bd-0": 3,
            "0x5134dc93-224": 1,
            "0x55260f6b-256": 1,
            "0x70a08231-32": 13,
            "0xa9059cbb-64": 1,
            "0xc4ca8e9f-192": 2,
            "0xfa461e33-320": 1
         }
      },
      {
         "result": {
            "0x128acb08-224": 1,
            "0x12aa3caf-548": 1,
            "0x1dd486f2-160": 1,
            "0x2c8958f6-160": 1,
            "0x36e52fee-96": 1,
            "0x430bf08a-0": 1,
            "0x4b64e492-219": 1,
            "0x70a08231-32": 3,
            "0xa9059cbb-64": 4,
            "0xc53a182f-128": 1,
            "0xd0e30db0-0": 1,
            "0xee63c1e5-93": 1
         }
      },
      {
         "result": {
            "0x00000001-55": 1,
            "0x70a08231-32": 1
         }
      },
      {
         "result": {
            "0xa9059cbb-64": 2
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0x095ea7b3-64": 2
         }
      },
      {
         "result": {
            "0x095ea7b3-64": 2
         }
      },
      {
         "result": {
            "0xa9059cbb-64": 1
         }
      },
      {
         "result": {
            "0xa9059cbb-64": 1
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0xc9807539-1216": 1
         }
      },
      {
         "result": {
            "0x110bcd45-160": 2
         }
      },
      {
         "result": {
            "0x110bcd45-160": 2
         }
      },
      {
         "result": {
            "0xa9059cbb-64": 1
         }
      },
      {
         "result": {
            "0xa9059cbb-64": 1
         }
      },
      {
         "result": {
            "0x9d5f4903-192": 1,
            "0xc5e20e84-128": 2
         }
      },
      {
         "result": {
            "0x40c10f19-64": 1,
            "0x7a9a1628-864": 2
         }
      },
      {
         "result": {
            "0x2812fe21-128": 1,
            "0xe74094ed-64": 1
         }
      },
      {
         "result": {
            "0x2812fe21-128": 1,
            "0xe74094ed-64": 1
         }
      },
      {
         "result": {}
      },
      {
         "result": {
            "0x128acb08-192": 1,
            "0x1dd486f2-160": 1,
            "0x2c8958f6-128": 1,
            "0x36e52fee-96": 1,
            "0x430bf08a-0": 1,
            "0x43a54c65-160": 1,
            "0x70a08231-32": 4,
            "0x7f376059-32": 1,
            "0xa9059cbb-64": 5,
            "0xc53a182f-128": 1,
            "0xe76c01e4-0": 1
         }
      },
      {
         "result": {}
      },
      {
         "result": {
            "0x022c0d9f-160": 3,
            "0x0902f1ac-0": 3,
            "0x0dfe1681-0": 1,
            "0x57da8d0d-61": 1,
            "0x70a08231-32": 13,
            "0xa9059cbb-64": 5,
            "0xd21220a7-0": 1
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0xc9807539-1216": 1
         }
      },
      {
         "result": {
            "0xc9807539-1216": 1
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0xc9807539-1216": 1
         }
      },
      {
         "result": {
            "0xc9807539-1248": 1
         }
      },
      {
         "result": {
            "0x001d3567-800": 1,
            "0x068bcd8d-32": 2,
            "0x252f7b01-864": 2,
            "0x2f925555-576": 1,
            "0x902b8ab7-288": 1,
            "0x987fa2d5-864": 1,
            "0xa18fa804-160": 1,
            "0xa9059cbb-64": 2,
            "0xb6addec7-128": 1,
            "0xb71e0f71-768": 1,
            "0xc2fa4813-864": 1
         }
      },
      {
         "result": {
            "0xa9059cbb-64": 2
         }
      },
      {
         "result": {
            "0xca4ac0f3-384": 1
         }
      },
      {
         "result": {
            "0xca4ac0f3-384": 1
         }
      },
      {
         "result": {
            "0x0c53c51c-512": 2,
            "0x23b872dd-96": 1,
            "0x6352211e-32": 1,
            "0xeaeb713e-308": 2
         }
      },
      {
         "result": {
            "0xa9059cbb-64": 1
         }
      },
      {
         "result": {
            "0xa9059cbb-64": 1
         }
      },
      {
         "result": {
            "0x1d732756-800": 2,
            "0x1fad948c-2208": 1,
            "0x3a871cdd-1120": 6,
            "0x51945447-256": 4,
            "0xa9059cbb-64": 2,
            "0xf465c77e-1120": 2
         }
      },
      {
         "result": {
            "0x1d732756-800": 7,
            "0x1fad948c-7488": 1,
            "0x3a871cdd-1120": 21,
            "0x51945447-256": 14,
            "0xa9059cbb-64": 7,
            "0xf465c77e-1120": 7
         }
      },
      {
         "result": {
            "0xd204c45e-192": 2
         }
      },
      {
         "result": {
            "0x128acb08-384": 1,
            "0x1dd486f2-160": 1,
            "0x23b872dd-96": 2,
            "0x2c8958f6-320": 1,
            "0x36e52fee-96": 1,
            "0x430bf08a-0": 1,
            "0x70a08231-32": 4,
            "0x7f376059-32": 1,
            "0xa9059cbb-64": 3,
            "0xc53a182f-128": 1,
            "0xdb3e2198-256": 1
         }
      },
      {
         "result": {
            "0x022c0d9f-160": 1,
            "0x0902f1ac-0": 1,
            "0x23b872dd-96": 2,
            "0x5c11d795-256": 1,
            "0x70a08231-32": 7,
            "0xa9059cbb-64": 1
         }
      },
      {
         "result": {
            "0x095ea7b3-64": 1
         }
      },
      {
         "result": {
            "0x0962ef79-32": 2,
            "0xa9059cbb-64": 2
         }
      },
      {
         "result": {}
      },
      {
         "result": {
            "0xa9059cbb-64": 2
         }
      },
      {
         "result": {
            "0x43c61747-288": 1
         }
      },
      {
         "result": {
            "0x128acb08-384": 1,
            "0x23b872dd-96": 2,
            "0x414bf389-256": 1,
            "0x70a08231-32": 4,
            "0xa9059cbb-64": 2,
            "0xfa461e33-320": 1
         }
      },
      {
         "result": {
            "0x6214bc0a-32": 1
         }
      },
      {
         "result": {
            "0x1a3cd59a-32": 2,
            "0x8fd4cf84-224": 2,
            "0xe0b4e8a6-320": 2,
            "0xec91fa5b-96": 2,
            "0xf23a6e61-192": 2,
            "0xf242432a-192": 2,
            "0xf4c30997-96": 2
         }
      },
      {
         "result": {
            "0x1c560305-64": 100,
            "0x6662c907-160": 200,
            "0x6d5433e6-64": 100,
            "0x7ae2b5c7-64": 100,
            "0xf27dc7b6-64": 1
         }
      },
      {
         "result": {
            "0x33d98fd9-896": 2
         }
      },
      {
         "result": {
            "0x41706c4e-640": 2,
            "0x572b6c05-32": 2,
            "0x70a08231-32": 2,
            "0xa9059cbb-84": 2,
            "0xcc2a15a7-160": 2
         }
      }
   ]
}
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