Skip Navigation Links > Products & services > Electronic Time stamps

První certifikační autorita (I.CA) has been an accredited provider of electronic time stamps in the Czech Republic and in the Slovak Republic since 2006, when it became the first entity accredited to provide this service. At the present time, it supplies, electronic time stamps to more than 550 clients. Some of the most notable clients include .

I.CA electronic time stamps are issued in accordance with binding document the provisions Policy issuance of timestamps and the applicable legislation of the Czech Republic and Slovakia and relevant technical standards. More in .

A time stamp confirms the existence of a document at a particular time. It is attached to documents as proof of their existence at the particular time and in the particular form. The combination of an undoubted point in time and particular data is essential especially for the purposes of their verification.

Concerning the electronic time stamps I.CA provides the following two services:

Electronic time stamps
Archival electronic time stamps

In addition to issuing time stamps, I.CA performs the following activities and provides the following services:

  • Provision of access to a testing time authority, more in
    • Assistance in trial and verification operation, removal of problems
  • Cooperation in the field of development and integration of software equipment for the purposes of generation of an application for a timestamp or communication with a time authority
  • Assistance to the solution supplier (upon request)
  • Assistance in updates and upgrades of a time authority’s software
  • Support and hotline

How to become a client of the qualified time authority operated by I.CA? More in .

The possibility of drawing time stamps

  • Drawing with a flat rate payment - suitable for large customers (with a monthly collection of over 10,000 stamps). Payment is always carried out for the drawn time stamps in a certain volume range for a specific period.
  • Packages time stamps - prepaid fixed number of stamps for customers with expected lower drawing timestamps. Time to exhaustion Package stamps are a maximum of three years.
  • Packages complex services - for customers who need to solve the entire electronic communications. The service always includes starter number of time stamps with the possibility of buying, qualified a commercial certificate, hardware (smart card and smart card reader) and the application for the creation and verification of electronic signature I.CA Secom.

I.CA electronic time stamps are fully functional and tested in many applications and information systems, such as I.CA Secom, Adobe Acrobat, Adobe LiveCycle, Adobe Pro, DigiSeal Office, PDF-Xchange, JSignPDF, podepsatPdf (TOPSPIN), LongTermValidator, information system of data boxes, electronic banking systems, document service, e-invoicing, e-registry, trusted storage locations (archives), banking solutions, IS in the field of judiciary and advocacy, etc. In all these applications and systems you need to perform the specific setting for the connection to time authority.

Registration authorities



8/28/2019 Swedish partnership
More here
7/16/2019 I.CA starts issuing certificates using elliptic curve cryptography (ECC)
More here
3/27/2019 I.CA became a member of the OBE QTSP Working Group
More here