International · observed source history
Crossref API
research · All · api
Responding on latest checkRolling 24 hours
Observed fetch evidence, not a registry claim0check attempts
0%successful responses
0qualified item observations
Data unavailableaverage response latency
Rolling seven days
History is shown only from the first persisted check0check attempts
0%successful responses
0qualified item observations
0consecutive failures now
Last checked 31 Aug 2026, 1:30 pm IST. Last successful response 31 Aug 2026, 1:30 pm IST. Last policy-qualified item Data unavailable IST.
Recent checks
8 persisted attemptsCompletedResultLatencyItems
Responded385 ms0 qualified / 0 discovered
Responded391 ms0 qualified / 0 discovered
Responded968 ms0 qualified / 0 discovered
Responded1,004 ms0 qualified / 0 discovered
Timed out10,000 ms0 qualified / 0 discovered
Responded1,073 ms0 qualified / 0 discovered
Responded8,258 ms0 qualified / 0 discovered
Responded390 ms0 qualified / 0 discovered