br_cin

Brazilian National Identity Card (CIN)

New Brazilian National Identity Card (since 2022): the CPF is the single identification number, with QR code and TD1 MRZ.

Category: Identity
Country: Brazil
Extracted fields: 14 fields
Cost: 1 credit

br_cinspecimen

Document number
First name
Last name
Sex
Nationality
Date of birth
Issue date
Expiry date
Issuing country

What it checks

MRZ ICAO 9303. Check digits of the machine readable zone.
MRZ vs printed data. The MRZ matches the visible data.
National identifiers. Official checksum or format of the number (NIF, CPF, CURP, RUT, SSN…).br_cpf
Holder. Name, number or date of birth match what you expect.
Age. Minimum or maximum age from the date of birth.
Validity. Not expired on the reference date.

Extracted fields

Document numberdocument_number
First namefirst_name
Last namelast_name
Sexsex
Nationalitynationality
Date of birthbirth_date
Issue dateissue_date
Expiry dateexpiry_date
Issuing countryissuing_country
Mrzmrz
Issuing stateissuing_state
Mother namemother_name
Father namefather_name
Place of birthbirth_place

Sample request

curl https://api.constaia.com/v1/analyze \
  -H "Authorization: Bearer $CONSTAIA_API_KEY" \
  -F "file=@document.pdf" \
  -F 'options={
    "expect": "br_cin",
    "checks": {
      "not_expired": true,
      "holder": {
        "full_name": "Carmen Especimen Ruiz"
      }
    },
    "storage": "none"
  }'

Sample response

Fictitious data. Shortened response.

200 OK · application/json

{
  "id": "an_01J9Z3K8QW4T6Y2B7N5M1R0PXC",
  "object": "analysis",
  "status": "completed",
  "livemode": false,
  "document": {
    "type": "br_cin",
    "label": "Brazilian National Identity Card (CIN)",
    "confidence": 0.97
  },
  "verdict": {
    "expected": [
      "br_cin"
    ],
    "match": true,
    "status": "valid",
    "reasons": [
      {
        "code": "type_match",
        "severity": "info",
        "message": "The document is: Brazilian National Identity Card (CIN)."
      }
    ]
  },
  "fields": {
    "document_number": {
      "value": "529.982.247-25",
      "confidence": 0.99,
      "validated": true
    },
    "first_name": {
      "value": "ANA",
      "confidence": 0.98,
      "validated": null
    },
    "last_name": {
      "value": "ESPECIME DA SILVA",
      "confidence": 0.97,
      "validated": null
    },
    "sex": {
      "value": "F",
      "confidence": 0.96,
      "validated": null
    },
    "nationality": {
      "value": "BRA",
      "confidence": 0.99,
      "validated": null
    },
    "birth_date": {
      "value": "1985-07-30",
      "confidence": 0.98,
      "validated": null
    },
    "issue_date": {
      "value": "2024-02-01",
      "confidence": 0.97,
      "validated": null
    },
    "expiry_date": {
      "value": "2034-02-01",
      "confidence": 0.96,
      "validated": null
    },
    "issuing_country": {
      "value": "BRA",
      "confidence": 0.99,
      "validated": null
    },
    "mrz": {
      "value": "IDBRA529982247225<<<<<<<<<<<<<\n8507309F3402018BRA<<<<<<<<<<<1\nESPECIME<DA<SILVA<<ANA<<<<<<<<",
      "confidence": 0.98,
      "validated": null
    },
    "issuing_state": {
      "value": "SP",
      "confidence": 0.97,
      "validated": null
    }
  },
  "checks": [
    {
      "code": "mrz_checksums",
      "passed": true,
      "message": "The MRZ check digits are correct."
    },
    {
      "code": "mrz_matches_visual",
      "passed": true,
      "message": "The MRZ matches the printed data."
    },
    {
      "code": "id_number",
      "passed": true,
      "message": "id_number"
    }
  ],
  "warnings": [],
  "storage": {
    "mode": "none",
    "file_deleted_at": "2026-09-29T10:00:02Z",
    "expires_at": null
  },
  "usage": {
    "credits": 1,
    "pages": 1
  }
}

FAQ

Does Constaia prove the document is authentic?

No. It checks the type, data consistency and your rules, and flags signals such as a possible edit or a screen photo. That does not prove authenticity.

Is a copy of the document kept?

No, unless you ask for it. With storage "none" (the default) the file is deleted when the analysis ends.

And for the record…

Create your account, copy the test key and validate your first document in five minutes.

Create a free account Talk to sales