All Systems Operational

Uptime over the past 90 days. View historical uptime.
APIs Operational
Public REST API Operational
Polite REST API Operational
OAI-PMH Operational
XML API Operational
OpenURL Operational
Crossmark dialog server Operational
Public content negotiation Operational
Polite content negotiation Operational
Metadata Plus Operational
Plus REST API Operational
Plus OAI-PMH Operational
XML Snapshots Operational
JSON Snapshots Operational
Plus content negotiation Operational
Key Manager Operational
Content Registration Operational
Admin tool Operational
Test admin tool Operational
Web deposit form Operational
New Metadata Manager Operational
Metadata files Operational
Open Funder Registry Operational
Retraction Watch Operational
Annual public data files Operational
Sites Operational
Crossref website Operational
Crossref support Operational
Metadata search Operational
Participation reports Operational
Integrations and external dependencies Operational
90 days ago
100.0 % uptime
Today
Handle servers Operational
Monitoring of iThenticate can be seen at https://turnitin.statuspage.io. Operational
AWS cloudfront Operational
ORCID Auto-update Operational
90 days ago
100.0 % uptime
Today
Meta Operational
deliberately-unreliable server Operational
Demo Auth Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

System Metrics Month Week Day
Public REST API Response Time
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Public REST API Uptime
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Polite REST API Response Time
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Polite REST API Uptime
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Plus REST API Response Time
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Plus REST API Uptime
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Plus OAI-PMH Response Time
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Plus OAI-PMH Uptime
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OpenURL Response Time
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OpenURL Uptime
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Public Content Negotiation Response Time
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Public Content Negotiation Uptime
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Polite Content Negotiation Response Time
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Polite Content Negotiation Uptime
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Plus Content Negotiation Response Time
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Plus Content Negotiation Uptime
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Crossmark Response Time
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Crossmark Uptime
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Crossref Metadata Search Response Time
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May 21, 2026

No incidents reported today.

May 20, 2026

No incidents reported.

May 19, 2026
19 May - weekly maintenance, release version v0.276.0
Completed - The scheduled maintenance has been completed.
May 19, 16:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 19, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release version v0.276.0 - on Tuesday, 19 May from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
May 18, 14:44 UTC
May 18, 2026

No incidents reported.

May 17, 2026

No incidents reported.

May 16, 2026

No incidents reported.

May 15, 2026

No incidents reported.

May 14, 2026
Test admin tool - test.crossref.org - returning 503 status code errors after today's deployment
Resolved - This incident has been resolved.
May 14, 18:17 UTC
Investigating - We are currently investigating this issue.
May 14, 16:10 UTC
14 May - weekly maintenance, release version v0.275.0
Completed - The scheduled maintenance has been completed.
May 14, 14:51 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 14, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release version v0.275.0 - on Thursday, 14 May from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
May 13, 14:22 UTC
May 13, 2026

No incidents reported.

May 12, 2026
12 May - weekly maintenance, release version v0.274.2
Completed - The scheduled maintenance has been completed.
May 12, 15:11 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 12, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release version v0.274.2 - on Tuesday, 12 May from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
May 11, 15:04 UTC
May 11, 2026

No incidents reported.

May 10, 2026

No incidents reported.

May 9, 2026

No incidents reported.

May 8, 2026
Bug identified, possibly resulting in failed submissions. Emergency maintenance scheduled.
Resolved - This incident has been resolved and the emergency maintenance has been completed.
May 8, 19:38 UTC
Monitoring - Emergency release version 0.274.2 has been released. We are monitoring the results.
May 8, 19:04 UTC
Identified - The issue has been identified and a fix is being implemented.
May 8, 19:01 UTC
Update - We are continuing to investigate this issue.
May 8, 18:39 UTC
Investigating - We have identified a bug in our system which may result in failing submissions at this time. An emergency release is scheduled for approximately 1900 UTC with a fix.

During the release, our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during that time will be stored and processed after the maintenance has been completed.
May 8, 16:59 UTC
May 7, 2026
April 2026 JSON Snapshot is missing data for records created or updated on 4/29 and 4/30
Resolved - The corrected April 2026 JSON snapshot has been released.
May 7, 12:34 UTC
Update - The corrected JSON snapshot is in process. It will be completed and available in the next 2-3 days.
May 5, 12:38 UTC
Identified - Due to problems with API indexing that occurred between 4/29 and 5/3, the current JSON snapshot for April 2026 is missing 1-2 days of data. We've resolved the indexing issue and are currently re-pushing the missing records into the API. Once that's completed, over the next few days, we'll build and release a new snapshot for April.
May 4, 13:45 UTC
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