Антиплагиат проверит оригинальность на случай если программный комитет попросит.

Here Антиплагиат is most likely the name of a plagiarism-checking system or service, not just the abstract concept anti-plagiarism.

In Russian, brand names and service names are often written without quotation marks in ordinary usage, especially in informal or semi-formal contexts. So Антиплагиат проверит... means something like the plagiarism checker / the Antiplagiat system will check...

If this were not a name, the sentence would sound odd.

Проверит is the future tense of the perfective verb проверить.

That fits the meaning well: the check will happen once, as a completed action, at some point in the future.

• проверяет = is checking / checks regularly / checks in general
• проверит = will check, will complete the check

So the sentence is talking about a specific future event, not a habitual action.

Because the sentence describes a possible future situation:

• the program committee might ask
• and in that case the system will check

So попросит is the future tense of the perfective verb попросить:

• просить = to ask, to request
• попросить = to ask/request once, as a completed act
• попросит = will ask / will request

Russian commonly uses the future in both parts of this kind of sentence when both actions are still hypothetical and future.

Оригинальность is the direct object of проверит, so it is in the accusative case.

However, for this noun, the accusative looks exactly the same as the nominative:

• nominative: оригинальность
• accusative: оригинальность

That is normal for many inanimate feminine nouns of this type.

So the form does not visibly change, but grammatically it is still functioning as the object.

It means in case, just in case, or for the case when.

In this sentence, it introduces a precautionary idea:

• the originality will be checked
• in case the program committee asks

A more standard written version is:

Антиплагиат проверит оригинальность на случай, если программный комитет попросит.

So the meaning is something like the plagiarism checker will check the originality in case the program committee asks.

Yes, in standard punctuation, you would normally write:

на случай, если ...

So the sentence would usually be:

Антиплагиат проверит оригинальность на случай, если программный комитет попросит.

Why? Because если introduces a subordinate clause, and Russian normally separates that clause with a comma.

Russian often leaves out words that are obvious from context.

Here программный комитет попросит means something like:

• asks for it
• asks to see it
• requests the originality check/report

The omitted object is understood from the earlier part of the sentence. English often needs to make this clearer, but Russian can leave it unsaid if the meaning is obvious.

Программный комитет is in the nominative case because it is the subject of the subordinate clause:

если программный комитет попросит

= if the program committee asks

Breaking it down:

• программный = adjective, nominative masculine singular
• комитет = noun, nominative masculine singular

Together they mean program committee.

Yes, Russian word order is fairly flexible, though different orders sound more or less natural depending on emphasis.

The given order is normal:

Антиплагиат проверит оригинальность на случай, если программный комитет попросит.

You could also move the conditional part for emphasis:

На случай, если программный комитет попросит, Антиплагиат проверит оригинальность.

That puts stronger focus on the in case idea. The core grammar stays the same.

It is understandable, but depending on context, many native speakers might prefer a slightly different phrasing.

For example:

• Антиплагиат проверит оригинальность, если программный комитет попросит.
  = The plagiarism checker will check originality if the program committee asks.

• Антиплагиат проверит оригинальность на случай запроса программного комитета.
  = more formal, something like in case of a request from the program committee

The original sentence is not wrong in meaning, but если alone may sound simpler and more natural if the intended meaning is just a straightforward condition.

There are two perfective verbs in the sentence:

• проверить → проверит
• попросить → попросит

Their imperfective partners are:

• проверять
• просить

Why perfective here? Because both actions are viewed as single, complete events:

• the system will complete a check
• the committee will make a request

If you used imperfective forms, the meaning would shift toward process, repetition, or general behavior rather than one specific future event.