Comprobamos el sello electrónico igual que la firma electrónica.

Comprobamos is the 1st person plural form of comprobar in the present indicative.

So it means we check / we verify.

A useful thing to notice is that comprobamos can also be the preterite form (we checked), but in this sentence it is normally understood as the present from context.

comprobar = to check / to verify
comprobamos = we check / we verify

Spanish often leaves out subject pronouns because the verb ending already shows who is doing the action.

So instead of saying:

• Nosotros comprobamos...

it is very natural to say simply:

• Comprobamos...

The ending -amos tells you the subject is we.

Spanish nouns normally need an article much more often than English nouns do.

Here:

• el sello = the seal
• la firma = the signature

The articles match the grammatical gender of the nouns:

• sello is masculine → el
• firma is feminine → la

That is also why the adjective changes:

• electrónico with sello
• electrónica with firma

Because adjectives in Spanish usually agree in gender and number with the noun they describe.

• sello is masculine singular → electrónico
• firma is feminine singular → electrónica

So:

• el sello electrónico
• la firma electrónica

This is a very common pattern in Spanish.

Igual que means the same as or in the same way as.

So the sentence is saying that the electronic seal is checked in the same way as the electronic signature.

A close literal idea is:

• Comprobamos el sello electrónico igual que la firma electrónica.
• We verify the electronic seal the same way as the electronic signature.

Sometimes como can express similarity, but in this sentence igual que is clearer and more natural for in the same way as.

• igual que strongly highlights sameness / equivalence
• como can mean like / as, but may sound less precise here

So igual que is a good choice when you want to stress that the verification process is the same.

Because la firma electrónica is not an indirect object and it is not a person receiving the action.

The sentence compares two things:

• el sello electrónico
• la firma electrónica

So la firma electrónica is part of a comparison after igual que, not the object of a preposition like a.

That is why you say:

• igual que la firma electrónica

not:

• igual que a la firma electrónica

No. Grammatically, they are just two noun phrases being compared, but in meaning they refer to different concepts.

• firma electrónica = electronic signature
• sello electrónico = electronic seal

In administrative or legal language, they are distinct terms, even though the sentence says they are checked in the same way.

So the sentence is not saying they are identical things; it is saying the verification procedure is the same.

In Spanish, descriptive adjectives usually come after the noun.

So:

• sello electrónico
• firma electrónica

is the normal order.

Putting the adjective before the noun is sometimes possible with certain adjectives, but it usually changes the tone or meaning. With a technical adjective like electrónico, the normal position is after the noun.

It sounds neutral to formal, especially because of the technical vocabulary:

• comprobamos
• sello electrónico
• firma electrónica

This kind of sentence would fit well in:

• official instructions
• legal or administrative texts
• technical documentation

It is not especially casual everyday speech.

Usually no. Even though comprobar and prove may overlap a little in some contexts, comprobar most often means:

• to check
• to verify
• to confirm

So in this sentence, we verify or we check is the best choice.

A learner should be careful not to translate it too literally as prove in most cases.

You could say:

• Comprobamos el sello electrónico igual que comprobamos la firma electrónica.

This is more explicit, because the second verb is repeated.

But Spanish often avoids repetition when the meaning is already clear, so the original sentence:

• Comprobamos el sello electrónico igual que la firma electrónica.

is more concise and perfectly natural in a technical context.

A simple pronunciation guide is:

• Comprobamos → kom-pro-BA-mos
• el sello electrónico → el SE-yo e-lek-TRO-ni-ko
• igual que la firma electrónica → i-GWAL ke la FIR-ma e-lek-TRO-ni-ka

A few points for Spain Spanish:

• ll in sello is commonly pronounced like y in many parts of Spain
• c in electrónico before tr is a normal k sound
• the stress is on:
  • comproBAmos
  • elecTRÓnico
  • iGUAL
  • FIRma
  • elecTRÓnica

Yes, that is a good natural translation.

Depending on style, you could also say:

• We verify the electronic seal in the same way as the electronic signature.
• We check the electronic seal just as we do the electronic signature.

The last version makes the comparison especially clear in English, even though the Spanish does not repeat the verb.