Time-Stamping is a service which allows to ensure the existence of a document (or general data message) at a given time. Through the issuance of a time stamp it is possible to guarantee the time at which a given data message was created, modified, received, etc., thus preventing it from being tampered with.
Certified Time Stamps issued by Certicámara are compliant with the TSA (Time Stamp Authority) standard described in documents RFC 3628 and 3161. Furthermore, it is compliant with the standards set forth under Law 527 of 1999.
The information contained in the certified time-stamp provides three pieces of information:
- Time of day: expressed as hour, minutes, seconds (hh:mm:ss), in accordance with the international measurements standard
- Date: expressed as day, month and year (dd:mm:yyyy)
- Data signature using the Certicámara certificate.
Certicámara provides the values assigned to time of day and date, based on the official time of the Republic of Colombia, taken directly from the reference patterns at the Time and Frequency Laboratory run by the Superintendence of Industry and Trade.
The amounts assigned to time of day and date, in a certified time-stamp, do not take into consideration, or apply, in any case, the amounts indicated by the requestor's computer system; no third party is able to change the values corresponding to time of day and date, or to request that different ones be used.