Wij registreren de houder met het chipnummer.

Wij means we.

Yes, you can often say we instead of wij in modern Dutch. The difference is usually:

• we = very common in everyday speech and neutral writing
• wij = a bit more formal, or sometimes more emphatic

So Wij registreren de houder met het chipnummer sounds fine, especially in an official or administrative context.

If you want emphasis, wij can also mean we ourselves or we, not someone else.

Because the subject is wij.

In the present tense, registreren is conjugated like this:

• ik registreer
• jij registreert
• u registreert
• hij/zij registreert
• wij registreren
• jullie registreren
• zij registreren

So with wij, you use registreren.

Also, Dutch main clauses normally put the finite verb in the second position:

• Wij registreren de houder met het chipnummer.

That is the normal word order for a statement.

Because registreren is a transitive verb in Dutch: it can take a direct object directly.

So:

• iemand registreren = to register someone
• iets registreren = to register something

In this sentence, de houder is the direct object of registreren.

So the structure is:

• Wij = subject
• registreren = verb
• de houder = direct object
• met het chipnummer = extra prepositional phrase

You do not need a preposition before de houder.

Dutch nouns are divided into two main article groups:

• de words
• het words

houder is a de word, so you say de houder.

nummer is a het word, so you say het nummer. Since chipnummer is a compound ending in nummer, it is also a het word:

• het chipnummer

A useful rule: in Dutch compounds, the last part usually determines the grammatical gender and article.

Literally, houder means holder. But in official or administrative Dutch, it often means something like:

• registered holder
• owner
• keeper
• person officially linked to something

So in this kind of sentence, de houder usually refers to the person whose details are officially recorded.

The best English translation depends on the context. For example, with pet microchips, it may be closer to owner or registered keeper than to the literal word holder.

Because Dutch normally writes compound nouns as a single word.

So:

• chip
  • nummer = chipnummer

This is very common in Dutch. English often uses two words where Dutch uses one compound word.

Other examples:

• telefoonnummer
• huisnummer
• paspoortnummer

A helpful rule: if English has a noun + noun combination, Dutch often combines it into one word.

Yes, met literally means with, but in this sentence it is better understood as:

• using
• by means of
• with the help of

So met het chipnummer means that the chip number is the information used to identify or register the holder.

A more explicit version could be:

• Wij registreren de houder aan de hand van het chipnummer.
• Wij registreren de houder met behulp van het chipnummer.

So here met is not really about physical possession; it is about the means or method.

Grammatically, that is possible for a moment, because the phrase met het chipnummer could seem to attach to de houder.

But in normal context, the sentence is usually understood as:

• We register the holder using the chip number.

Real-world meaning helps here. In an administrative sentence like this, met het chipnummer is normally read as describing how the registration is done, not as describing which holder.

If you wanted to make that clearer, you could rephrase it as:

• Wij registreren de houder aan de hand van het chipnummer.

That version removes most of the ambiguity.

Because that is a very normal Dutch sentence order.

A basic Dutch main clause often looks like this:

• subject
  • finite verb
    • object
      • other information

So here:

• Wij = subject
• registreren = finite verb
• de houder = object
• met het chipnummer = prepositional phrase

That gives:

• Wij registreren de houder met het chipnummer.

Putting the prepositional phrase at the end is the most neutral and natural order here. Dutch can move parts around for emphasis, but this version is the straightforward one.