uni-assist e.V. does not cooperate with commercial agencies in or outside of Germany to mediate the placement of applicants at German universities. Some institutions claim to be connected to uni-assist. Official information on applying to uni-assist universities is available only on the websites of the universities and on https://www.uni-assist.de/en/.
A person who has the legal authority to certify copies of documents as true copies or signatures as genuine signatures.
In addition, notaries certify contracts.