Developer

Every week, we bring you the key builder updates and developments from across the Ethereum ecosystem.

The Similar Contracts Search tool helps you discover contracts with similar source code, deployed across various EVM chains via explorers powered by Team Etherscan.

The Contract Diff Checker is a tool that lets you compare two smart contract source code files side by side. Any differences between the files will be automatically highlighted.

Building a multichain portfolio tracker with Etherscan API.

Access a world of EVM data with a single API key.

An introduction to Application Binary Interface (ABI).

A beginner's guide on how to start using Etherscan APIs

A quick tutorial on verifying smart contract codes on Etherscan.

During the enforcement of the API key requirement, developers will expect the return errors listed, where an API key is not in use or exceeding the rate limit.

Similar Match Contract Verification is a useful tool for verifying commonly reused contracts. However, the re-verification tool was previously exploited, leading to this update.

This article will go over the steps to take when a contract source code verification failed due to an incorrect constructor argument parameter.

The Ethereum Developer APIs are provided as a community service and supports both GET/POST requests and a rate limit of 5 requests/sec.

When verifying the contract source code at Etherscan we require that you also provide us with the Constructor Arguments as they are automatically appended to the end of the contract source bytecode when the contract is compiled by Solidity.

Follow these steps to in order to verify the contract source and ensures the compiled contract byte code matches the input creation code.