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Blockchair vs CryptAPI

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

APIBlockchairNEW—CryptAPINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree API; provider takes ~1% fee per forwarded payment
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Blockchair vs CryptAPI: common questions

Which is more reliable, Blockchair or CryptAPI?

On our scheduled checks, CryptAPI leads on measured uptime — Blockchair at —% versus CryptAPI at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Blockchair and CryptAPI need an API key?

Neither needs a paid key — Blockchair is callable with no signup, and CryptAPI is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Blockchair and CryptAPI from the browser?

Yes — both Blockchair and CryptAPI send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Blockchair and CryptAPI free for commercial use?

Blockchair has unclear commercial terms, and CryptAPI allows commercial use on its free tier. 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.