Post-Mortem / Root Cause Analysis (RCA):
The downtime registered by this monitor between June 11th, 2026, and June 15th, 2026, is a false positive and does not represent an actual outage of the production Time Stamping Authority.

Technical Breakdown:
Root Cause: On June 11th, the production TSA timestamping certificate (used to sign time-stamp tokens) was renewed. However, the external monitoring probe's validation trust store was not simultaneously updated to recognize and trust the new cer...