What is changing?

Starting from 29th June 2026, the timestamping token (the signed timestamping response) includes a new extension called Qualified Certificate Statements (hereafter ‘qcStatements’).

This addition is required to comply with eIDAS 2.0 – specifically, it fulfils an obligation introduced by the eIDAS Implementing Acts, which mandate that qualified trust service providers include this compliance statement in their timestamping tokens.

The ‘qcStatement’ extension signals that the timestamp has been issued by a qualified trust service in accordance with EU regulations, contributing to the long-term trustworthiness and legal validity of timestamps across Europe.
Although SK’s Timestamping service has always been a qualified trust service – confirmed through conformity assessment – and this extension simply makes that status explicitly visible in the token itself.

Impact on your systems

For customers, no action is required, and the service will continue to function as usual.

However, if you are using custom or third-party timestamp token (TST) validation tools that explicitly validate the structure of the timestamping token, we recommend verifying that your implementation correctly handles the presence of additional extensions.

Most standards-compliant implementations do this by default.

Want to test?

The change has already been enabled in the SK DEMO Timestamping service since 11 May 2026 (see the service changelog).

Service availability

Enabling the ‘qcStatement’ extension will not cause any interruption to the timestamping service.
The change implementation date: 29th June 2026.

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