Etherscan
Block explorer for Ethereum
etherscan.ioUpdated 2026-11-02
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About
Etherscan is the authoritative block explorer for Ethereum and the EVM world: look up address balances, transactions, token holdings and approvals, verify and even read/write contracts. Its address labels are referenced industry-wide, and most EVM chains have a sibling site.
Distinguish success from failed transactions when checking transfers — failed ones still burn gas. The contract read/write page makes debugging approvals and interactions straightforward.
Main uses
- Transaction & address lookup
- Contract verification & read/write
- Token & approval queries
- Gas tracker
Site info
CategoryOn-chain Tools & Explorers
TypeBlock explorer
LanguagesMulti-language
AccessWeb / API
FeesFree tier
FAQ
What else can Etherscan do besides look up transactions?
Read/write verified contracts, inspect token holder distribution, track gas and labeled accounts — it's core infrastructure for Ethereum.
What is the Token Approval page on Etherscan?
It lists the spending permissions you've granted to third-party contracts. Stale approvals are a real theft vector — revoke them regularly with Revoke.cash.
How do I reach the official Etherscan site safely?
The “Visit official site” button on this page points to Etherscan’s official address: etherscan.io. Fake clones are common in crypto — verify the domain and bookmark this page or the official URL.
Does Etherscan cost money?
Free tier