Comparison

BaseScan vs Blockscout on Base

Both explorers completed the core WETH lookup, transaction, and verified-contract checks in this run. For the same unauthenticated contract.getabi operation, Blockscout returned the ABI while the BaseScan-backed endpoint required an API key. Choose against the exact support or developer task and keep a second explorer available for cross-checking.

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Updated July 18, 2026. Sponsored and affiliate relationships are labeled when active.

Product	Best For	Pricing	Free Tier	Networks / rails	Disclosure
BaseScan	Users and developers who want Etherscan-style Base exploration.	Free public explorer; API plans may vary.	Yes	Base	Organic
Blockscout Base Explorer	Users who want an open-source explorer view and contract/address pages.	Free public explorer.	Yes	Base	Organic

Evidence run

The same Base tasks, recorded explorer by explorer

Point-in-time observations with the tested inputs, source URLs, and available evidence artifacts kept together.

Test date: 2026-07-18
Operator / reviewer: Crypto.club operator: Almida Labs LLC
Method: Signed-out Playwright 1.61.1 and curl checks against the same Base WETH contract and transaction. The API comparison used the same unauthenticated contract.getabi operation and address on both explorers. No latency timing was collected.
Correction path: Use the site feedback form described in the editorial corrections policy.

Network: Base mainnet

Object: Wrapped Ether (WETH) 0x4200000000000000000000000000000000000006

Transaction: 0xfe7bb2457601dc46492d4450079079f41d7f818b8338ea075407e6c97f2d5650

BaseScan

Task	Input	Result	First-hand observation	Evidence
Object lookup	Base WETH contract addressOperation: `lookup-weth-contract`	Pass	Curl returned 200 HTML naming Wrapped Ether (WETH), the exact address, and a verified contract.	Open source Visual evidence unavailable: signed-out Playwright stopped at Cloudflare verification.
Transaction detail	Shared WETH withdrawal transactionOperation: `inspect-shared-weth-transaction`	Pass	Curl returned transaction HTML showing Success, an unwrap of 3.46 WETH, and the exact WETH contract as the recipient.	Open source Visual evidence unavailable: signed-out Playwright stopped at Cloudflare verification.
Verified source / ABI	Base WETH contract code tabOperation: `inspect-verified-weth-source-and-abi`	Pass	Curl returned the WETH9 source section and a Contract ABI for the verified contract.	Open source Visual evidence unavailable: signed-out Playwright stopped at Cloudflare verification.
API / export	Unauthenticated Base WETH contract.getabi requestOperation: `retrieve-weth-contract-abi`	Partial	The API returned HTTP 200 JSON with Missing/Invalid API Key, so the route was reachable but did not return the ABI without credentials.	Open source Open screenshot Operation contract.getabi Status 0 Message NOTOK Result Missing/Invalid API Key

Blockscout

Task	Input	Result	First-hand observation	Evidence
Object lookup	Base WETH contract addressOperation: `lookup-weth-contract`	Pass	The public UI loaded Contract details for the exact address, labeled the token L2 Standard Bridged WETH (Base), and showed contract verification.	Open source Open screenshot
Transaction detail	Shared WETH withdrawal transactionOperation: `inspect-shared-weth-transaction`	Pass	The public UI showed Success, method withdraw, the sender, the WETH contract, and 3.460367872863353856 WETH burned.	Open source Open screenshot
Verified source / ABI	Base WETH smart-contract APIOperation: `inspect-verified-weth-source-and-abi`	Pass	The unauthenticated API returned is_verified true, contract name WETH9, WETH9.sol source containing contract WETH9, and a 16-entry ABI.	Open source Open raw response Verified true Contract WETH9 Source file WETH9.sol ABI entries 16 Source marker contract WETH9 SHA-256 `c225361888bed44bae39eb5e8d9ecbca0f07cff92f2c454865b1ba4d7e426b82`
API / export	Unauthenticated Base WETH contract.getabi requestOperation: `retrieve-weth-contract-abi`	Pass	The Etherscan-compatible API returned status 1 and message OK; its result parsed as a 16-entry ABI for the Base WETH contract.	Open source Open raw response Operation contract.getabi Status 1 Message OK ABI entries 16 SHA-256 `4332ecfaf6e9d3e44b5febd6b6750e1aef7d190d81f82279f8a1f2877b451bd8`

Limitations

This is a point-in-time run against one contract and one transaction, not proof that every explorer page or object behaves the same way.
BaseScan served public HTML to curl but stopped signed-out Playwright at a Cloudflare verification screen for the object, transaction, and source pages. Those three tasks therefore omit screenshot links.
No account, API key, wallet connection, export download, write action, or transaction submission was used.
Raw JSON evidence is a point-in-time response saved with a SHA-256 digest; the live endpoints can return different data later.
Counts, labels, prices, indexed data, access gates, and API responses can change after the test date.

Before you choose

Use this as a shortlist check.

Start with the table, then verify the current product docs, pricing pages, custody or control model, network support, and support terms before a rollout. This is a research aid, not a recommendation to transact, custody assets, file taxes, or treat any product as risk-free.

Questions teams ask

When each option makes sense

When does BaseScan make sense?

Choose BaseScan if your users expect Etherscan-style transaction, address, token, and contract pages.

When does Blockscout make sense?

Choose Blockscout if open-source explorer infrastructure or an alternate Base explorer view matters.