Guarantee document integrity with a Time Stamping Authority

EDICOM offers electronic timestamping services as a Certification Authority and Qualified Trust Service Provider

What is qualified electronic time stamping?

The electronic timestamp certifies that a series of data have existed and remain unaltered since a specific moment in time.

There are many uses for digital timestamping, such as certified invoice scanning, safekeeping of all types of e-documents and any process that needs to certify that certain electronic data were present at a given time in the form they were presented to the timestamping authority.

In electronic timestamping, the Qualified Trust Service Provider acts as a third party testifying to the existence of certain electronic data at a specific date and time. It is a mechanism applied to numerous e-documents such as invoices, orders, business transactions and financial bookkeeping records.

The eIDAS regulation states that a qualified electronic timestamp must meet these requirements:

Link the date and time with the data in such a way that the possibility of altering the data without detection is reasonably prevented.

Be based on a temporary information source linked to Coordinated Universal Time (UTC).


Be signed using an advanced e-signature or sealed with an advanced e-seal from the Qualified Trust Service Provider or any equivalent method.

By means of electronic timestamping, the qualified trust service provider certifies that certain given data have existed from a specific date and time.

Timestamp application process for a given document:

  1. The client application must obtain the document summary, fingerprint or hash and make a timestamping request in accordance with the RFC3161 protocol. If the client does not have a framework in the EDICOM B2B platform, they can send their request via web services.

  2. The timestamp is applied (with the document hash) when the message is received. To this end, the service has a time source in synch with the UTC universal time scale.

  3. EDICOM’s signature is added as the Certification Authority, as well as the certificate.

  4. The signed timestamp is returned to the client. At this point, EDICOM offers a document safekeeping service to archive originals on high-availability platforms.

Benefits of using time stamping

Legal proof

  • An electronic timestamp provides documents with legal proof that they have remained unaltered since the moment this security mechanism was applied.


  • It also guarantees the full integrity of an archived document, warranting that its content has not been modified or altered from the moment the timestamp was applied.

Cloud platform to send and sign documents

Simplify and streamline the electronic signing of documents with the cloud solution that meets eIDAS security and integrity requirements.

An e-signature guarantees source authenticity, i.e., the identity of the document owner. EDICOM is a qualified trust service provider certified to offer the qualified e-signature certificate service.

Discover this service

Discover our Long-Term e-Archiving solution

EDICOMLta (EDICOM Long Term Archiving) is the certified and long-term electronic archiving system that EDICOM offers as a qualified trust service provider. Our system is designed in line with the eIDAS Regulation, the maximum regulation on electronic archiving in Europe.

The service applies identification methods, digital signature and electronic time stamping pursuant to the eIDAS regulation to all archived documents and data to ensure that file integrity and authenticity is protected over time.

How does it work?