Block API
Cryptocurrency · Operational · 30d uptime 100%
We power crypto access for everyone: from private people, to pros, to public companies. Here since the beginning of crypto.
Trust signals
Pricing
FREEMIUM
Auth
API_KEY
CORS
No
Rate limit
Unknown
Health
305ms
Trust score
84 (B)
Last checked Oct 19, 2026 · uptime 24h 100% / 7d 100% / 30d 100%
Strong candidate; weakest signal is CORS.
Links
- Homepagewww.blockchain.com
- Documentationwww.blockchain.com/api
- Base URLblock.io/docs/basic
Integration checklist
- Auth is API_KEY
- No CORS — route calls through your backend.
- Rate limit: Unknown