The European Space Agency (ESA)-funded project ‘A White Rabbit based implementation of Coherent Clock’ has successfully completed its validation phase. The project demonstrated a highly resilient, ground-based time distribution system designed to safeguard critical infrastructures against GNSS vulnerabilities. To build a resilient architecture, the Coherent Clock project introduced a distributed clock ensemble mechanism. Central to the platform is the distributed clock ensemble server (DiCES), which monitors node status and historical Kalman filter metrics through a dedicated representational state transfer application programming interface. DiCES computes real-time phase and frequency corrections, delivering them back to individual nodes to drive a local hardware ‘paper clock’ ensemble with sub-picosecond resolution.