Etherscan Information Center Menu
  • Newsletters
  • Glossary
  • Go to Etherscan
  1. Home
  2. Author
  3. Kaven Choi

Kaven Choi Kaven Choi

What is an ERC-20 token ?

ERC-20 tokens are tokens that follow a set of standards defined for smart contracts on Ethereum.

  • Kaven Choi
Updated 10 days ago

What is a Pending Transaction? ⌛

If your transaction shows Pending, your transaction is pending to be mined, please be patient.

  • Kaven Choi
Updated 10 days ago

Etherscan Developer API Key 🔑

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

  • Kaven Choi
Updated a year ago

Contract Verification - Constructor Arguments

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.

  • Kaven Choi
Updated 11 days ago

Contract Troubleshooting - Unable to Verify Contract Source

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

  • Kaven Choi
Updated 10 days ago

© 2026 Etherscan Information Center