>Anonymous age verification

Anonymity from whom? Does the German government doesn't know that Gunter Shmidt has just verified his age to the site GreatBDSMPartiesInBerlinForDragQueens.com ? Even if they obtain the logs from the site?

afaik it comes directly from your ID's card chip, there is an App inbetween that temporarily stores that data so it can be submitted to the service you are registering to