SupportStatusDashboard

eth_getcode

Base RPC

How to use it

// yarn add @tatumio/tatum

import { TatumSDK, Base, Network } from "@tatumio/tatum";

const tatum = await TatumSDK.init<Base>({ network: Network.BASE });

const code = await tatum.rpc.getCode(
  "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
);

await tatum.destroy(); // Destroy Tatum SDK - needed for stopping background jobs

Overview

The eth_getCode method is which allows users to interact with the blockchain. This method is specifically used to retrieve the contract code (bytecode) of an account at a specific block number. It is helpful when developers need to examine the bytecode of a deployed contract or validate that the contract code on the blockchain matches the intended code.

Use cases for this method could include:

  • Debugging a smart contract
  • Verifying the integrity of a deployed contract
  • Analyzing contract bytecode for security vulnerabilities

Parameters

The eth_getCode method accepts two parameters:

  1. address (string): The address of the contract whose bytecode you want to retrieve. This should be a 20-byte address, formatted as a hex string with a 0x prefix.
    • Example: "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
  2. block (string): The block number at which you want to retrieve the contract code. This can be specified as a hex string or one of the following special keywords:
    • "earliest": The first block in the blockchain
    • "latest": The most recent block in the blockchain
    • "pending": The upcoming block that is being mined
    • Example: "0x1" or "latest"

Return Object

The eth_getCode method returns a string representing the contract bytecode. The returned value is a hex string with a 0x prefix.

  • If the account has contract code, the returned string will contain the bytecode.
  • If the account is not a contract or does not exist, the returned string will be 0x.

Response

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": "0x606060...code_here...3839"
}