I.CA a.s.

Qualified Time Stamps

Certified time stamp is a tool which ensures binding of new time data to already existing data, information files etc. Certified time stamp works as an electronic proof of the existence of particular data at specific time.  Connection between the undeniable time data and particular data is crucial for the purpose of retroactive verification. Reliable authority, a reliable third party, using electronic application, issues certified time stamps.  There is a thumbnail (copy) of data, which a certified time stamp will be issued for. If your application includes all required information, time authority will yet again create a reply with a copy of the data completed by current time data and will send it back to the applicant. When generating certified time stamps I.CA uses clock with following attributes:

• it connects to Coordinated Universal Time (UTC) in regular intervals which are set according to the type of clock, analysis of  declared inaccuracy of time (± 500ms) and reliability of connection with Coordinated Universal Time.

• it is synchronised with UTC including the synchronisation if the leap second appears

•it is protected against threats which could change its technical and metric features

Authorization extension from 1.2. 2006,

First certification authority a.s. has been issuing qualified time stamps in everyday production since 06.03.2006. Qualified time stamps are equipped by data used for creating electronic marks.

Here you can find out how you can become a client of authority of qualified time stamps.