For an online filing, yes — the act makes it obligatory for every non-citizen founder.
The regulation is explicit: requests for the registration of enterprises with foreign investment, enterprises with foreign capital participation, and any other legal entity whose founders include persons who are not citizens of Uzbekistan are signed with the electronic digital signature of those persons — obligatorily. There is no online path around it, and the separate consent mechanism that lets co-founders confirm by portal identification or facial recognition is written to exclude non-citizens. (Registration Regulation, Para. 13 — lex.uz ↗)
That is why the remote route runs through a representative. The act allows documents to be filed in person by the applicant’s representative on production of an identity document and a document confirming their powers, and names the power of attorney first among those instruments. The founder’s own signature then goes on one document, at a notary in their own country, rather than on a filing in Tashkent. (Registration Regulation, Para. 31 — lex.uz ↗)
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Part of the answer bank — 132 questions, each cited to the article it rests on.