Brazil - CNH QR code + face match (Datavalid)

curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=BRA" \
  -F "services=bra_cnh_facial_qrcode" \
  -F "vendor_data=user-1234" \
  -F "consent=true" \
  -F "tax_number=11111111111" \
  -F "selfie=@./selfie.jpg" \
  -F "cnh_qr_code_image=data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAB"

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "BRA",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "cnh_qrcode": "sample_value",
        "date_of_birth": "1990-01-01",
        "face_match_probability": "Altíssima probabilidade",
        "face_match_score": "0.990",
        "first_name": "John",
        "identification_number": "SAMPLE-ID-12345",
        "last_name": "Doe",
        "name_match_score": "1.000",
        "verifications": {
          "identification_number": true
        }
      },
      "validation": {
        "identification_number": "full_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "BRA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "NO_MATCH",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "BRA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "BIOMETRIC_NO_MATCH",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "In Review",
  "issuing_state": "BRA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "BIOMETRIC_IMAGE_UNUSABLE",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

POST

database-validation

curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=BRA" \
  -F "services=bra_cnh_facial_qrcode" \
  -F "vendor_data=user-1234" \
  -F "consent=true" \
  -F "tax_number=11111111111" \
  -F "selfie=@./selfie.jpg" \
  -F "cnh_qr_code_image=data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAB"

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "BRA",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "cnh_qrcode": "sample_value",
        "date_of_birth": "1990-01-01",
        "face_match_probability": "Altíssima probabilidade",
        "face_match_score": "0.990",
        "first_name": "John",
        "identification_number": "SAMPLE-ID-12345",
        "last_name": "Doe",
        "name_match_score": "1.000",
        "verifications": {
          "identification_number": true
        }
      },
      "validation": {
        "identification_number": "full_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "BRA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "NO_MATCH",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "BRA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "BIOMETRIC_NO_MATCH",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "In Review",
  "issuing_state": "BRA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "BIOMETRIC_IMAGE_UNUSABLE",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

SERPRO Datavalid v4 pf-facial-qrcode — decodes the QR code printed on Brazilian CNH driver licences (physical or digital, issued since May 2017), validates CPF + name + date of birth against Receita Federal, and matches the live selfie against the CNH portrait stored at Senatran. Didit exposes this service through POST /v3/database-validation/ so you can verify the submitted data against the authoritative source and receive normalized match results.

Coverage

Coverage: —
Country: Brazil
Service ID: bra_cnh_facial_qrcode
Data domain: Biometric
Category: DriverLicence

Inputs

Field	Required	Example
`tax_number`	Yes	`11111111111`
`selfie`	Yes	`@./selfie.jpg`
`cnh_qr_code_image`	Yes	`data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAB`
`first_name`	No	`John`
`last_name`	No	`Doe`
`date_of_birth`	No	`1990-01-01`
`vendor_data`	No	`user-1234`

Required inputs: tax_number, selfie, cnh_qr_code_image
Optional inputs: first_name, last_name, date_of_birth, vendor_data
Consent: Required
Workflow availability: Available in workflow
Coverage: —
Price: $0.50 per successful query

Body parameters

string

default:"BRA"

required

ISO 3166-1 alpha-3 country code for this database service.Example: BRA

string

default:"bra_cnh_facial_qrcode"

required

Array containing this service ID. Pinning the service keeps the request scoped to this exact database.Example: bra_cnh_facial_qrcode

Explicit end-user consent for this service.Example: true

string

default:"11111111111"

required

Tax or fiscal identification number.Example: 11111111111

file

required

Selfie image file to upload for biometric database validation. Accepted formats: JPEG, PNG, or WebP.Example: @./selfie.jpg

string

required

cnh_qr_code_image value required by this database service.Example: data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAB

string

Given name to validate.Example: John

string

Family name to validate.Example: Doe

string

Date of birth in YYYY-MM-DD format.Example: 1990-01-01

string

default:"user-1234"

Your stable user reference for this person, such as your internal user ID. Didit uses it to link standalone checks to the same end user and reduce duplicate-detection noise.Example: user-1234

Input rules & validation notes

Brazilian CPF (exactly 11 digits)
tax_number must contain digits only; remove spaces, hyphens, and punctuation before sending the request.
tax_number must be exactly 11 characters long.

How to call it

curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=BRA" \
  -F "services=bra_cnh_facial_qrcode" \
  -F "vendor_data=user-1234" \
  -F "consent=true" \
  -F "tax_number=11111111111" \
  -F "selfie=@./selfie.jpg" \
  -F "cnh_qr_code_image=data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAB"

Every successful call returns HTTP 200. The outcome_code field tells you what actually happened — distinguishing, for example, a real biometric mismatch (BIOMETRIC_NO_MATCH) from a selfie that could not be read (BIOMETRIC_IMAGE_UNUSABLE). The status shown is the default feature status; your configured Partial Match / No Match actions can override it.

MATCH — The registry confirmed the identity and every checked field matched.

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "BRA",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "cnh_qrcode": "sample_value",
        "date_of_birth": "1990-01-01",
        "face_match_probability": "Altíssima probabilidade",
        "face_match_score": "0.990",
        "first_name": "John",
        "identification_number": "SAMPLE-ID-12345",
        "last_name": "Doe",
        "name_match_score": "1.000",
        "verifications": {
          "identification_number": true
        }
      },
      "validation": {
        "identification_number": "full_match"
      }
    }
  ]
}

NO_MATCH — The registry returned no match for the submitted data.

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "BRA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "NO_MATCH",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

BIOMETRIC_NO_MATCH — The face-match score was below the acceptance threshold - the selfie is not the same person as the registry photo.

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "BRA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "BIOMETRIC_NO_MATCH",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

BIOMETRIC_IMAGE_UNUSABLE — The selfie could not be processed (empty, no face, low quality, or the registry could not read it). Prompt the user to retake the selfie.

{
  "request_id": "req_01H…",
  "status": "In Review",
  "issuing_state": "BRA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "BIOMETRIC_IMAGE_UNUSABLE",
      "service_id": "bra_cnh_facial_qrcode",
      "service_name": "Brazil - CNH QR code + face match (Datavalid)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

Returned data

The exact fields surfaced in source_data depend on what the registry returns. The generated example for bra_cnh_facial_qrcode currently documents this normalized shape:

cnh_qrcode
date_of_birth
face_match_probability
face_match_score
first_name
identification_number
last_name
name_match_score

Pricing & SLAs

Brazil - CNH QR code + face match (Datavalid) queries are billed only when Didit receives a conclusive result from the validation source.

Per-call price: $0.50 USD.
Billing: per successful query. You are not charged when the registry is unreachable, when required fields are missing, or when the request is rejected before reaching the source.
Latency: typical p95 < 2 s.
Availability: 99.9% per quarter on Didit’s side; downstream source availability varies by country and dataset.

​Coverage

​Inputs

​Body parameters

​Input rules & validation notes

​How to call it

​Returned data

​Pricing & SLAs

​Continue reading

Coverage

Inputs

Body parameters

Input rules & validation notes

How to call it

Returned data

Pricing & SLAs

Continue reading