shipapis
StarSubmit an APISubmit API

Blockchain vs Etherscan

Same instrument, two spec sheets — measured, not claimed.

APIBlockchainHEALTHY95EtherscanHEALTHY92
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d98.3%100%
P50 · ms445660
P95 · ms11142536
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitRetry-After: 47655sUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Blockchain vs Etherscan: common questions

Which is more reliable, Blockchain or Etherscan?

Both are neck-and-neck — Blockchain and Etherscan each measure 99.02% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Blockchain or Etherscan?

Blockchain has the lower median latency in our checks — Blockchain responds in 445 ms versus Etherscan at 660 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Blockchain and Etherscan need an API key?

Etherscan needs no key, while Blockchain requires a free API key. If you want to start calling without signup, reach for Etherscan first.

Can I call Blockchain and Etherscan from the browser?

Only Etherscan is browser-friendly — it returns CORS headers over HTTPS. Blockchain needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Blockchain and Etherscan free for commercial use?

Blockchain has unclear commercial terms, and Etherscan has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.