Blockchair vs Nexchange
Same instrument, two spec sheets — measured, not claimed.
Blockchair vs Nexchange: common questions
Which is more reliable, Blockchair or Nexchange?
On our scheduled checks, Nexchange leads on measured uptime — Blockchair at 98.0% versus Nexchange at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Blockchair or Nexchange?
Nexchange has the lower median latency in our checks — Blockchair responds in 729 ms versus Nexchange at 281 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 Blockchair and Nexchange need an API key?
Neither needs a paid key — Blockchair is callable with no signup, and Nexchange is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Blockchair and Nexchange from the browser?
Yes — both Blockchair and Nexchange 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 Nexchange free for commercial use?
Blockchair has unclear commercial terms, and Nexchange 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.