@jablek
In order to have performed a qualified electronic signature (QES) you would have undergone an identification process, e.g. via video identification with or without an agent or a smartcard.
You can actually simply check it by looking at the final document, e.g. opening it in Adobe Acrobat reader and checking if there is a digital, qualified certificate with your name embedded or not.
You can also check the certificate of completion, where it would state if it is a qualified signature.
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