From today you can find the stamps you have as an insured person at atlas.gov.gr.
If you are insured with IKA, OAEE, ETAA and OGA, you can find your stamps online on the website using your AMKA, as well as your taxisnet.
The "Atlas" Information System will gradually integrate the insurance period of all Greeks in all Social Security Institutions of the country. At this stage, the insurance period from 1994 to the present has been integrated for IKA, OAEE, ETAA and from 1998 to the present for OGA. A total of 2.8 billion days of insurance have been integrated. In the next period, information from ETAP-MME and NAT will be integrated, as well as the period 1994-1997 for OGA.
Each insured person has the ability to view and print the insurance period that he has documented. Access is done using the GSPS TAXIS codes and knowledge of the AMKA is required. In case the insured person does not remember his AMKA, he can find it on the page “Do I have an AMKA?”
Source: digitallife.gr

