Etherscan review: the explorer everyone calls official

If you have ever sent ETH, you have probably pasted a hash into Etherscan. It is the Ethereum block explorer that wallets link to by default, that exchanges send you to when a deposit is late, and that developers use to verify contracts. So many people use it that the question “is Etherscan the official Ethereum explorer?” is one of the most searched phrases in this niche. This review answers that question first, then walks through the Etherscan Ethereum blockchain explorer feature by feature, with real addresses and the API limits as they stand on 24 September 2026.

Is Etherscan the official Ethereum explorer?

No. Etherscan is a private, independent company. Matthew Tan built and launched it in 2015, the same year Ethereum’s mainnet went live on 30 July, and the team is based in Kuala Lumpur, Malaysia. It is not a product of the Ethereum Foundation, it is not governed by Ethereum’s core developers, and nothing in the protocol gives it special status.

In fact, Ethereum has no official block explorer at all. The block explorer page on ethereum.org lists Etherscan alongside Blockscout, Blockchair, Ethplorer, OKLink, Otterscan, beaconcha.in and several others, without ranking any of them. The blockchain itself is the source of truth. Every explorer is just a different window onto the same public data, which is why a transaction you look up on Etherscan should look identical on Blockscout or on our own live Ethereum explorer.

Why does Etherscan feel official, then? Mostly because it got there first and kept shipping. It became the default link in MetaMask and countless dapps, its contract verification became the de facto standard for Solidity developers, and its labels (“Binance 14”, “Uniswap V3: Router”) turned raw hex into something people could reason about. Being the default is not the same as being official, and that distinction matters when you judge its data, its ads and its API terms.

The Etherscan transaction page, field by field

The Etherscan Ethereum transaction explorer view is where most visits start and end. Open any hash and the Overview tab leads with what you actually want to know: Status (Success, Fail or Pending), the Block with its confirmation count, and a UTC Timestamp. Below it, a line called Transaction Action tries to summarise the whole thing in English, such as “Swap 1.5 ETH for 4,012 USDC on Uniswap V3”. That summary is genuinely useful and one of the things smaller explorers still lack.

Next come From and To, then any ERC-20 and NFT transfers the call triggered, the Value in ETH with its dollar equivalent at the time, and the Transaction Fee. Click “More details” and the EIP-1559 breakdown appears: gas limit versus gas used, base fee, max fee, max priority fee, and the amount that was burnt. A plain ETH transfer always shows 21,000 gas used. If you see a failed transaction that used 100% of its gas limit, it ran out of gas; raising the price would not have helped.

Further down, Other Attributes shows the transaction type (0 legacy, 2 for EIP-1559, 3 for blobs, 4 for EIP-7702 set-code), the nonce and the position in the block. Input Data can be decoded into the function name and arguments whenever the target contract is verified. The Logs tab lists emitted events and the State tab shows exactly which balances changed, which is the fastest way to answer “where did my money actually go?”. Our guide to reading an Ethereum transaction explains every one of these fields in plain language.

Address pages: the Etherscan Ethereum address explorer

Search vitalik.eth and Etherscan resolves the ENS name and opens the address page. The top cards show the ETH balance, its USD value and a Token Holdings dropdown listing every ERC-20 the address holds, with prices where Etherscan has them. A More Info card shows the first and last transaction and a “Funded by” hint that reveals where the address got its first ETH, a small feature that is very handy for tracing. A Multichain card tells you whether the same address has activity on other networks Etherscan covers.

The tabs underneath split activity into normal transactions, internal transactions (value moved by contracts), ERC-20 token transfers and NFT transfers, plus an Analytics tab with balance and fee charts. Every list can be filtered and exported to CSV, although exports require a free account. For contracts, a Contract tab appears with the code, and an Events tab lists logs. If you want to understand what these numbers say about the health of your own wallet, our Ethereum address explorer guide goes deeper, including how to spot a drained wallet.

Token pages

Open USDT at 0xdAC17F958D2ee523a2206206994597C13D831ec7 and you get the token page: max total supply, holder count, total transfers, on-chain market cap, decimals, the official website and social links submitted by the issuer. The tabs cover transfers, the full holder list (useful for spotting concentration), DEX trades and the contract. A reputation badge and warnings on reported tokens help, but they are not a guarantee. Scam tokens copy names and logos all the time, so always compare the contract address with the issuer’s own site. We cover this in detail in our Ethereum token explorer guide.

Verified contracts and the Read / Write Contract tabs

This is the feature that made Etherscan indispensable to developers. When a team publishes the source code of a deployed contract, Etherscan recompiles it and checks that the bytecode matches what is on-chain. A green check on the Contract tab means the code you are reading is the code that runs. Verification works from Remix, Hardhat and Foundry, and since the V2 API a single key verifies on every supported chain.

Once a contract is verified, Read Contract lets you call view functions from the browser, such as checking balanceOf for any address on WETH (0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2) without writing a line of code. Write Contract connects your wallet and sends real transactions, and for upgradeable contracts “Read as Proxy” and “Write as Proxy” talk to the implementation behind the proxy. It is powerful and it deserves respect: Write Contract signs exactly what you type, with no safety net. Our smart contract explorer guide explains what verification does and does not prove.

Token approvals, gas tracker, labels and alerts

Token approval checker

Every time you let a dapp spend your tokens, you sign an approval that stays live until you revoke it. Etherscan’s token approval checker lists every ERC-20, ERC-721 and ERC-1155 approval an address has granted, shows how much value is exposed, and lets you revoke each one after connecting your wallet. Revoking is an on-chain transaction, so it costs a little gas. You can also just paste an address to look without connecting anything. We recommend a check after every airdrop hunt or new DeFi experiment.

Gas tracker

The Etherscan gas tracker shows low, average and high gas prices in gwei with an estimated confirmation time and dollar costs for common actions such as a swap, an NFT sale or a bridge transfer. It also lists the contracts consuming the most gas right now, which explains sudden spikes. In September 2026, with a 60M block gas limit, typical prices sit well under a few gwei, so a plain transfer costs cents. For a live gauge without ads, see our Ethereum gas tracker.

Labels, name tags and the watchlist

Etherscan maintains public labels for exchanges, bridges, protocols, known hacks and phishing addresses, browsable in its label cloud. It is the single biggest reason its pages feel readable. With a free account you can add private name tags to addresses you interact with, notes on transactions, and a watchlist of up to 50 addresses that emails you on incoming or outgoing transfers. Private tags are also a good defence against address poisoning, the scam where attackers send dust from a lookalike address so it shows up in your history. If your usual counterparty has a tag, the lookalike will not.

Charts and statistics

The charts section tracks daily transactions, active addresses, ETH supply, average gas price, network utilisation and much more, all downloadable as CSV. It is enough for journalism and quick research. For serious analytics, dedicated tools like Dune or your own node are better, but for “how busy was the network in May?” Etherscan is fast and free.

The Etherscan API V2 in 2026: what the free tier still gives you

For developers, the Etherscan API has long been the default way to pull account history, token transfers, logs and verified ABIs. In 2025 it moved to API V2: one base URL (https://api.etherscan.io/v2/api), one key, and a chainid parameter to choose the network. The old per-chain V1 endpoints were switched off on 15 August 2025, and the supported chains page lists 68 networks today. That unification is genuinely convenient. It is also the backdrop to two cuts that changed the value of the free tier.

First, on 22 November 2025 Etherscan announced that the free tier would cover about 90% of supported chain IDs. The remaining chains, including Base, BNB Smart Chain, OP Mainnet and Avalanche C-Chain, now need a paid plan, and Etherscan introduced a cheaper Lite plan at the same time. Second, from 1 July 2026 the maximum number of records per request on the free tier dropped from 10,000 to 1,000 for endpoints such as txlist, tokentx and getLogs, and the internal-transactions-by-block-range endpoint moved to Pro plans. Verified source code and ABI endpoints remain free on every chain. The official changelog also records smaller moves, such as shared free pools on some chains and dropped networks like Scroll.

What does this mean in practice? For a hobby script that checks a few Ethereum mainnet wallets, the free tier is still fine. For anything that paginates through a busy address, the 1,000-record cap means ten times as many calls, which quickly bumps into the 3-per-second limit. And because a key is mandatory, you cannot safely call the Etherscan API from front-end code: anyone can read the key in the browser. That is exactly why our own tool runs on keyless public data instead. If you are choosing a provider, our Ethereum explorer API comparison and the list of Etherscan alternatives show where the free capacity is today.

Privacy: what Etherscan learns about you

Blockchain data is public, but your interest in a particular address is not. According to its privacy policy, Etherscan logs IP addresses for diagnostics and rate limiting, uses cookies for preferences and tracking, records technical data such as browser and device, and collects usage analytics including search queries. It works with third-party analytics and advertising providers and says it does not sell personal data. None of this is unusual for a large ad-funded website, but it means that searching your own wallet on Etherscan from your home IP links you to that wallet in someone’s logs.

A free account adds your email to the picture, and the watchlist and private tags tie specific addresses to it. If that bothers you, use a VPN, avoid logging in for casual lookups, or run a local explorer such as Otterscan against your own node. Our open-source Ethereum explorer guide shows the options. For quick, account-free checks, the ethexplorer.org live tool sends your query straight from your browser to public endpoints and stores nothing.

Fake Etherscan sites, “ethscan” and how to stay safe

A brand this trusted is a magnet for impersonation. The real explorer lives at etherscan.io; etherscan.com redirects there, and the testnet versions are subdomains such as sepolia.etherscan.io. Everything else deserves suspicion. Lookalike domains with an extra letter, a hyphen or a different top-level domain turn up in search ads, Discord DMs and fake “transaction failed” emails. They copy the design pixel for pixel and then ask you to connect a wallet to “unlock a pending transfer” or “verify your address”. Etherscan never needs a signature for you to read data.

The misspelling “ethscan” is a special case because it is so common. The domain ethscan.io belongs to a separate site that presents itself as an alternative Ethereum explorer; it is not Etherscan and not operated by it. Whatever you think of it, do not treat it as the Etherscan you know. Bookmark etherscan.io, reach it from your wallet’s “view on explorer” link, and never type a seed phrase into any website.

Etherscan vs the alternatives in one paragraph each

Blockscout is the main challenger: self-hostable, source-available code, a keyless API, very fast on new protocol features such as blobs and EIP-7702, and the canonical explorer for many rollups. Its labels and polish trail Etherscan, but it is the better choice if you care about transparency or need free API capacity. Read our full Blockscout review.

Ethplorer and Blockchair serve narrower needs: token portfolios for the first, multi-chain search and privacy for the second. For validators, a beacon chain explorer such as beaconcha.in shows what Etherscan’s execution-layer view cannot, and on rollups each network has its own explorer, covered in our layer 2 explorer guide. The full picture is in our best Ethereum block explorers of 2026.

Who should use Etherscan in 2026?

Almost everyone who touches Ethereum will use Etherscan at some point, and for good reason. For checking a deposit, reading a contract, revoking an approval or understanding a complex DeFi transaction, it is still the most complete Ethereum blockchain explorer available. Beginners benefit most from its labels and plain-English summaries; developers from contract verification and the multichain API.

Just keep its nature in mind. It is a well-run commercial service, not a public utility, and its terms can change, as the 2025–2026 API cuts showed. Pair it with an open-source explorer for a second opinion, keep a keyless option for scripts, and guard your privacy when looking up your own addresses. Used that way, Etherscan earns its 9.2 out of 10.