Peço cópia autenticada da certidão de casamento e reconhecimento de firma.

Yes. Peço is the 1st person singular of pedir: I request / I ask for.

Portuguese often drops the subject pronoun when the verb ending already makes the subject clear, so Eu peço becomes simply Peço.

In this kind of formal or bureaucratic sentence, Peço works a lot like a performative verb in English:

• Peço... = I request...

It sounds more formal than everyday speech.

Because this is a very compressed, formal style, common in requests, forms, and administrative language.

A fuller version would be:

• Peço uma cópia autenticada da certidão de casamento...

Leaving out articles like uma can make the sentence sound more like a checklist or official request. It is natural in bureaucratic Portuguese, even though in everyday speech people would more often include the article.

Because autenticada is an adjective agreeing with cópia.

• cópia = feminine singular
• so the adjective must also be feminine singular: autenticada

Agreement in Portuguese is very important:

• documento autenticado
• cópia autenticada
• documentos autenticados
• cópias autenticadas

In Brazil, cópia autenticada is a very common legal/administrative term. It means a certified copy: a copy that has been officially checked against the original, usually by a cartório.

So this is not just any copy. It is a copy with official legal validity for administrative purposes.

Da is the contraction of:

• de + a = da

Here it means of the.

So:

• cópia autenticada da certidão de casamento = authenticated copy of the marriage certificate

This kind of contraction is extremely common in Portuguese:

• do = de + o
• da = de + a
• dos = de + os
• das = de + as

Because certidão de casamento is the standard official term in Brazil.

Even if certificado might seem like a natural translation of certificate, legal and civil-registry Portuguese often uses certidão for official records issued by the registry office.

So this is less about pure grammar and more about fixed bureaucratic vocabulary.

Some common examples are:

• certidão de nascimento
• certidão de casamento
• certidão de óbito

Literally, it looks like recognition of signature, although firma here is a legal/administrative term.

In practice, reconhecimento de firma means that a notary office (cartório) verifies a signature, usually by comparing it with the signature specimen they have on file.

Important point: here firma does not mean company. In this expression, it refers to a signature in legal language.

So reconhecimento de firma is a fixed phrase you should learn as a whole.

Most likely two items:

1. cópia autenticada da certidão de casamento
2. reconhecimento de firma

So the structure is basically:

• Peço [cópia autenticada da certidão de casamento] e [reconhecimento de firma].

This is a common compact style in formal requests. The first item is longer, and the second item is simply added with e.

In a fully expanded sentence, o would be possible:

• Peço uma cópia autenticada da certidão de casamento e o reconhecimento de firma.

But in formal administrative style, articles are often dropped, especially in lists or request formulas. So:

• Peço cópia autenticada... e reconhecimento de firma.

sounds concise and natural in that context.

It means and, but the sentence is a little compact, so a learner might wonder what exactly is being linked.

The natural reading is:

• authenticated copy of the marriage certificate and
• signature recognition

So autenticada modifies only cópia, not reconhecimento.

If someone wanted to make it extra clear, they might write:

• Peço cópia autenticada da certidão de casamento e o reconhecimento de firma.

or even separate the items in a list.

It is natural, but mainly in a formal, bureaucratic, or administrative setting.

In everyday conversation, a Brazilian might say something more like:

• Preciso de uma cópia autenticada da certidão de casamento e de reconhecimento de firma.
• Vou precisar de uma cópia autenticada da certidão de casamento e de reconhecer firma.

So the original sentence sounds like something written on a form, in an email to an office, or in an official request.

Because Portuguese very often links nouns with de where English might use a noun directly or an of phrase.

Examples:

• certidão de casamento = marriage certificate
• reconhecimento de firma = signature recognition
• cópia do documento = copy of the document

This noun + de + noun structure is one of the most common patterns in Portuguese, especially in formal vocabulary.