eth_getCode | Cronos

Cronos API method that retrieves the compiled bytecode of a smart contract, providing its address as a parameter. This method returns a hexadecimal string representing the smart contract’s bytecode.

Developers can use this bytecode to verify whether a smart contract is legitimate and ensure that it performs its intended functions.

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Parameters

• address — the address of the smart contract to query.

• quantity or tag — the integer of a block encoded as hexadecimal or the string with:

  • latest — the most recent block in the blockchain and the current state of the blockchain at the most recent block. A chain reorganization is to be expected.
  • safe — the block that received justification from the beacon chain. Although this block could be involved in a chain reorganization, it would necessitate either a coordinated attack by the majority of validators or an instance of severe propagation latency.
  • finalized — the block accepted as canonical by more than 2/3 of the validators. A chain reorganization is extremely unlikely, and it would require at least 1/3 of the staked amount to be burned.
  • earliest — the earliest available or genesis block.
  • pending — the pending state and transactions block. The current state of transactions that have been broadcast to the network but have not yet been included in a block.

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Response

data — the compiled bytecode of a smart contract. Returns 0x if the address is not associated with a smart contract.

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eth_getCode code examples

The following example retrieves the compiled bytecode from the WCRO token smart contract.

const { Web3 } = require("web3");

const NODE_URL = "CHAINSTACK_NODE_URL";

const web3 = new Web3(NODE_URL);



async function getCode(address, block) {

  const code = await web3.eth.getCode(address, block)

  console.log(code)

 }

 

 getCode("0x5C7F8A570d578ED84E63fdFA7b1eE72dEae1AE23", "latest" )

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Use case

A practical use case for the eth_getcode method is verifying whether an address is associated with a smart contract. This can be particularly useful for blockchain explorers, auditors, and DApp developers, who must ensure that the account they interact with is legitimate.