Qualified time stamp

Digital evidence that ensures that data exists and has not been modified from a specific point in time.

What it consists of and what it is used for

The timestamp service (TSS) is a system that ensures that data exists and has not been modified from a specific date and time.

This is accomplished associating the data at the exact time instant by the electronic signature of our Time Sealing Authority (TSA). The result is what is known as an electronic timestamp.

The qualified name means that our electronic timestamps have the highest legal recognition in European level. That is, they enjoy the presumption of accuracy of the date and time they indicate and the integrity of the data to which the date and time are linked.

This service is free of charge for personal use (citizens) and in two payment methods for professional use (Business, Public Administration, etc.).

What benefits does it have for you?

Legal validity
Protect your data from changes
Make sure they exist from a date and time

How to apply for this service for professional use

Ask for information

Write to us from our contact section or call us indicating your interest in the service. You will have to indicate for which entity you want to contract it, in which modality (annual or payment for use) and briefly describe the environment where it will be used.

Please wait for our reply

Our support staff will escalate your consultation to our expert staff, who will contact you as soon as possible to advise you on the basis of your needs.

Enjoy the service

Hire the service on the terms and conditions that our expert staff has explained to you, and start using the service.

Make the payment

Once the service has started, you will receive the invoice with the details for your payment.

Ask for information

For more information on how to set up our time stamp for personal use, here is the manual for Adobe Reader DC

DOWNLOAD MANUAL

Who can request this service

The ACCV offers this service free of charge for personal use (citizens) and in two payment methods for professional use (Business, Public Administration, etc.).

The service verifies the identity of professional users using access credentials (username / password) that are provided at the time of hiring.

If your use is personal, you can start using our time-stamping service setting it up in your applications. If your use is professional, hire the service first.

Need help? Hire the service

How to use Time Stamping

The service follows the specifications of RFC 3161, encapsulated over HTTP, which basically defines the following process:

- The user sends the summary or hash of the data you want to seal to the Time Sealing Authority (TSA).

- The TSA takes the summary of the user’s data, the date and time of that moment with great accuracy and reliability, generates the time stamp by signing all this information and forwarding it to the user.

To perform this process the usual thing is that the user uses applications that already implement the standard - such as Adobe Reader if set up correctly and what we want is to seal a PDF - or you develop your own applications based on libraries that have methods that implement this functionality - such as the libraries for Java Arangí developed by the ACCV.

The URL of the server and is: http://tss.accv.es:8318/tsa

The Certificate of the Time Sealing Authority (TSA) issuing the stamps can be downloaded from here

What benefits does it have for you?

Legal validity
Protect your data from changes
Make sure they exist from a date and time

Two modalities for professional use

The service is offered free of charge for personal use (citizens) and in two payment methods for professional use (Business, Public Administration, etc.). The modalities are as follows:

01 Annual flat rate

A fixed annual amount (annual subscription with unlimited use) is paid for the use of the service without a time stamp limit

02 Payment for usage

A subscription to the service is paid (subscription to service) and as many packages of 500 time stamps are contracted as are required. Packages can be contracted as they are consumed.

Ask for information

Information that could be useful

These are some of the most common questions we receive. If you do not find an answer to your question, contact us.

The price of this service varies depending on the mode you choose. Write to gestioncerts@accv.es indicating the details of your institution, as well as the method you wish to contract and we will send you the budget adjusted to what you are looking for.

The time stamping service is provided by HTTP, but it is not a web site. You must use it from an application that allows it, configuring it and facilitating the data to be sealed through it.

The service monitors the consumption made of it and distinguishes between users, whether for personal or professional use. When a consumer behavior is detected that indicates a non-contracted professional use, the service is cut off.

The maximum capacity is 30 stamps/second.