Case Study: Clearstream achieves 99.99% uptime and scalable real-time certificate validation for high-value transactions with Axway Validation Authority

Reliable, scalable certificate validation for high-value, high-volume transactions across the globe

Clearstream, a Luxembourg-based subsidiary of Deutsche Börse that provides settlement and custody services to ~2,500 customers and holds roughly €10 trillion in assets, needed a reliable, scalable digital-certificate validation system to support online, real-time processing of high-value, high-volume transactions across global time zones. The challenge was to ensure every message signature could be validated with zero tolerance for failure, because missed validations could cause severe financial and regulatory consequences.

Clearstream implemented Axway Validation Authority (OCSP) to validate every signature in its transaction flow, supporting some 40–50 million validations per month and stress-tested to 5,000 validations per minute. The solution delivers 99.99% (sometimes 100%) uptime, eliminates missed transactions, enables prompt delivery of cash and securities, and is fully managed by trained in-house staff—earning Clearstream recognition as a PKI center of excellence that surpasses regulatory requirements.

Clearstream

Paul Rees CISSP CEH