Úředně ověřený podpis je na souhlasu oprávněné osoby.

Podpis is the subject of the sentence, so it is in the nominative singular.

The sentence breaks down like this:

• Úředně ověřený podpis = subject
• je = is
• na souhlasu oprávněné osoby = prepositional phrase saying where it is

So grammatically, it is:

[Subject] + [verb] + [location / place]

The adjective ověřený agrees with podpis, so it is also masculine singular nominative.

It means something like officially certified, officially verified, or in many practical contexts notarized.

The two parts are:

• úředně = officially, by an office/authority
• ověřený = verified, certified, checked

So úředně ověřený podpis is not just any signature. It is a signature whose authenticity has been officially confirmed by an authorized office, notary, Czech POINT, etc.

After na, when it expresses a static location meaning on, Czech uses the locative.

So:

• souhlas = nominative singular
• na souhlasu = on the consent / on the consent document → locative singular

This is the same pattern as:

• na stole = on the table
• na dokumentu = on the document
• na souhlasu = on the consent

Here it does not mean movement onto something. It means the signature is already located there.

Because oprávněné osoby depends on souhlas, not directly on the preposition na.

The phrase is basically:

• souhlas oprávněné osoby = the consent of the authorized person

Here, oprávněné osoby is in the genitive singular, because it means of the authorized person.

Then the whole noun phrase is put after na:

• na souhlasu oprávněné osoby

Only the head noun souhlas changes to the locative after na. The dependent phrase oprávněné osoby stays in the genitive.

A useful way to think about it:

• souhlas koho? čeho? → oprávněné osoby

It means authorized person, entitled person, or person with the legal right/authority to do something.

This is common in formal, legal, and administrative Czech.

A small but important grammar point:

• osoba is a feminine noun
• so even if the person is male, the phrase is still grammatically feminine

That means you get forms like:

• oprávněná osoba
• oprávněné osoby
• oprávněné osobě

This is normal, because grammatical gender follows osoba, not the real-life sex of the person.

In this sentence, it most likely refers to the written consent document.

That is because of na souhlasu = on the consent. A signature is physically placed on a document, so in real use this usually means something like:

• a consent form
• a written declaration of consent
• a signed consent document

So even though souhlas can mean abstract consent, here the context makes it concrete.

This is a very common kind of Czech phrasing, especially in administrative or legal language.

Je na... literally means is on..., and Czech often uses that kind of simple location wording where English might prefer something more idiomatic, such as:

• The consent form bears a certified signature
• The consent must include a notarized signature

Czech official style often sounds very literal and document-focused. So podpis je na souhlasu is a natural bureaucratic way to describe where the signature appears.

It is definitely formal and bureaucratic.

You are much more likely to see this in:

• official instructions
• legal documents
• administrative forms
• government websites

In everyday speech, a speaker might phrase it differently, for example:

• Na souhlasu musí být úředně ověřený podpis oprávněné osoby.
• Souhlas musí mít úředně ověřený podpis oprávněné osoby.

Those feel a bit more straightforward. The original sentence is perfectly fine, but it sounds like official written language.

Yes. Czech word order is flexible, and changing it usually changes emphasis, not the core meaning.

For example:

• Úředně ověřený podpis je na souhlasu oprávněné osoby.
  Focuses first on the certified signature.

• Na souhlasu oprávněné osoby je úředně ověřený podpis.
  Starts with the document/location.

• Na souhlasu oprávněné osoby musí být úředně ověřený podpis.
  Sounds more like an instruction or requirement.

So the original order is correct, but other orders are possible depending on style and emphasis.

Ověřený is an adjective-like participial form meaning verified / certified.

It ends in -ý because it agrees with podpis, which is:

• masculine
• singular
• nominative
• inanimate

So:

• ověřený podpis
• ověřená kopie
• ověřené dokumenty

Similarly, úředně is an adverb modifying ověřený, telling you how the signature was verified: officially.

Not always.

• ověřený podpis = a verified/certified signature
• úředně ověřený podpis = a signature verified by an official authority

The added word úředně makes it more specific and formal. It emphasizes that the verification was done in an officially recognized way, not just informally checked by someone.

In many real-life administrative contexts, that distinction matters a lot.