Summary

Two brief periods of downtime occurred on July 21, 2025, affecting Chainlink Data Streams feed updates on World Chain.

Timeline

• 14:02:59 to 14:06:33 PDT — 3 minutes 34 seconds
  
• 14:07:17 to 14:11:49 PDT — 4 minutes 32 seconds

Impact

During these windows, no Data Streams updates were successfully submitted for affected feeds.

The missed updates did not result in unjust liquidations or other downstream protocol issues.

Root Cause

A backward skew of ~5 seconds in the blockchain clock caused submitted reports to have a validFromTimestamp later than the block timestamp, leading to reverts.

This same issue also impacted Chainlink’s official transmitter during the affected period.

Resolution

Once the clock skew resolved, feed updates resumed automatically.

A full investigation confirmed the cause and verified the absence of negative downstream effects.

Follow-Up Actions

• Blockchain clock skew detection and handling has been implemented in our infrastructure to prevent recurrence.

Start of downtime.