The basic features
Time stamps are issued by a time-stamp authority (TSA). Time stamps are signed by the certificate issued to the respective TSAs.
Time stamps can be used by individuals (e.g. in Adobe Acrobat) or servers (e.g. log signatures).
Individual services 
Services are directly accessible to all students, scientists and researchers, academics, and university staff.
Catalogue of services
Identity
Time-Stamp Authority (TSA)
Time-Stamp Authority (TSA)
The purpose of the service is to assign unambiguous time identification to a certain object. The time stamps usually serve as evidence that at a given moment in the past a certain document existed.
Standard Services
- CESNET operates NTP servers of own design with a stable time basis. The precision of server clock is in microseconds;
- Time stamps assign unambiguous time information to a particular object;
- Independence of the CESNET Association.
The service is available to association members and connected participants with no time stamping infrastructure of their own.
The service is available free of any additional charge to the entities connected to the CESNET e-infrastructure.
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