Верно, получатель неизвестен.

Here верно means correct, that’s right, or true.

At the start of a sentence, it often works as a brief confirmation of something just mentioned. So the tone is like:

• Correct, ...
• That is correct, ...

Grammatically, learners can think of it as a set expression used to confirm information.

Because верно is separated from the main statement and works like an introductory confirmation.

So the structure is:

• Верно, = Correct,
• получатель неизвестен. = the main statement

This comma is natural and standard here. It marks a pause, just like in English:

• Correct, the recipient is unknown.

Получатель means recipient, receiver, or in some contexts addressee.

It comes from the verb получать / получить = to receive.

Depending on context, it could mean:

• the person receiving a letter or parcel
• the recipient of money
• the receiving party in an official or technical system

So it is a fairly formal, functional word.

Получатель is in the nominative singular.

It is the subject of the sentence:

• получатель = the recipient
• неизвестен = is unknown

It is also a masculine noun grammatically, because it ends in a consonant. In official Russian, it can still refer to a recipient of any gender.

Because in Russian, the verb to be is usually omitted in the present tense.

So:

• получатель неизвестен literally = recipient unknown
• natural English = the recipient is unknown

But in the past or future, Russian does use a form of быть:

• Получатель был неизвестен. = The recipient was unknown.
• Получатель будет неизвестен. = The recipient will be unknown.

Because Russian usually uses the short form adjective in the predicate.

Compare:

• неизвестный получатель = an unknown recipient
  
  • full adjective before the noun
• получатель неизвестен = the recipient is unknown
  
  • short adjective after the noun, used as the predicate

So:

• неизвестный = full form
• неизвестен = short masculine singular form

This is a very common pattern in Russian.

In this sentence, неизвестен is normally written as one word because it means unknown as a regular adjective.

Russian often writes не together with adjectives when the result is a standard lexical meaning:

• известен = known
• неизвестен = unknown

The separate spelling не известен is possible only in special cases, usually when the negation is strongly emphasized or contrasted, for example:

• Он не известен, а забыт. = He is not known, but forgotten.

In your sentence, the normal spelling is неизвестен.

That ending shows it is the short-form masculine singular adjective, agreeing with получатель.

Short-form adjective endings change depending on gender and number:

• masculine: неизвестен
• feminine: неизвестна
• neuter: неизвестно
• plural: неизвестны

For example:

• Причина неизвестна. = The reason is unknown.
• Имя неизвестно. = The name is unknown.
• Обстоятельства неизвестны. = The circumstances are unknown.

Yes, but Получатель неизвестен is the most neutral order.

Russian word order is flexible, so you could also say:

• Неизвестен получатель.

But that sounds more marked, literary, or emphatic. A beginner should treat:

• получатель неизвестен

as the standard pattern.

The stress is:

• Ве́рно, получа́тель неизве́стен.

A rough English-style pronunciation guide would be:

• VYER-na, pa-lu-CHA-tyel' nee-iz-VYES-tyen

A few useful notes:

• unstressed о often sounds closer to a
• the ь in получатель softens the final л
• ч is always soft in Russian

So получатель does not sound like a hard l at the end.

Yes, it sounds formal, administrative, or system-like.

You might see or hear it in:

• delivery or postal information
• banking or payment systems
• official records
• database messages
• technical or bureaucratic contexts

In everyday speech, a person might say something less formal, such as:

• Я не знаю, кто получатель. = I don’t know who the recipient is.
• Неизвестно, кто получатель. = It’s unknown who the recipient is.

So your sentence is perfectly natural, but it belongs more to formal or official style.