Nigeria Bank Verification Number (BVN)

curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=NGA" \
  -F "services=nga_bank_verification_number" \
  -F "vendor_data=user-1234" \
  -F "bvn=11111111111" \
  -F "selfie=@./selfie.jpg"

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "NGA",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {
        "date_of_birth": "1990-01-01",
        "first_name": "John",
        "last_name": "Doe"
      },
      "validation": {
        "identification_number": "full_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "NGA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "BIOMETRIC_NO_MATCH",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "In Review",
  "issuing_state": "NGA",
  "match_type": null,
  "validations": [
    {
      "outcome_code": "INCONCLUSIVE",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {},
      "validation": {}
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "NGA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "DOCUMENT_NOT_FOUND",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "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=NGA" \
  -F "services=nga_bank_verification_number" \
  -F "vendor_data=user-1234" \
  -F "bvn=11111111111" \
  -F "selfie=@./selfie.jpg"

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "NGA",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {
        "date_of_birth": "1990-01-01",
        "first_name": "John",
        "last_name": "Doe"
      },
      "validation": {
        "identification_number": "full_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "NGA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "BIOMETRIC_NO_MATCH",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "In Review",
  "issuing_state": "NGA",
  "match_type": null,
  "validations": [
    {
      "outcome_code": "INCONCLUSIVE",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {},
      "validation": {}
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "NGA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "DOCUMENT_NOT_FOUND",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

Verifies input data against the Nigerian Banking Industry database. Requires a selfie: the enrolment portrait held against the BVN is face-matched with it, and the record is only returned when the two are the same person. 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: ~ 100%
Country: Nigeria
Service ID: nga_bank_verification_number
Data domain: Financial
Category: Banking

Inputs

Field	Required	Example
`bvn`	Yes	`11111111111`
`selfie`	Yes	`@./selfie.jpg`
`first_name`	No	`John`
`last_name`	No	`Doe`
`date_of_birth`	No	`1990-01-01`
`vendor_data`	No	`user-1234`

Required inputs: bvn, selfie
Optional inputs: first_name, last_name, date_of_birth, vendor_data
Consent: Not required
Workflow availability: Available in workflow with field mapping
Coverage: ~ 100%
Price: $0.35 per successful query

In a workflow, bvn is not printed on an identity document, so no step produces it on its own. Collect it from a Questionnaire answer, a Document AI extraction field, or a value you send when you create the session, and map it on the Database Validation step. Until it is mapped the workflow editor shows this service disabled and names the missing input; at run time a missing input means the check is skipped before any query, so you are never billed for a database that could not be asked.

Body parameters

string

default:"NGA"

required

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

string

default:"nga_bank_verification_number"

required

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

string

default:"11111111111"

required

Bank Verification Number.Example: 11111111111

file

required

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

string

default:"John"

Given name to validate.Example: John

string

default:"Doe"

Family name to validate.Example: Doe

string

default:"1990-01-01"

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

Nigerian Bank Verification Number (exactly 11 digits)
bvn must contain digits only; remove spaces, hyphens, and punctuation before sending the request.
bvn 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=NGA" \
  -F "services=nga_bank_verification_number" \
  -F "vendor_data=user-1234" \
  -F "bvn=11111111111" \
  -F "selfie=@./selfie.jpg"

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": "NGA",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {
        "date_of_birth": "1990-01-01",
        "first_name": "John",
        "last_name": "Doe"
      },
      "validation": {
        "identification_number": "full_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": "NGA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "BIOMETRIC_NO_MATCH",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "identification_number": "no_match"
      }
    }
  ]
}

INCONCLUSIVE — The registry could not determine whether the person matches - the result is genuinely uncertain (they may or may not be in the registry). This is NOT a no-match and NOT a technical image problem; no field is asserted, so match_type is null and the check is sent to review.

{
  "request_id": "req_01H…",
  "status": "In Review",
  "issuing_state": "NGA",
  "match_type": null,
  "validations": [
    {
      "outcome_code": "INCONCLUSIVE",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "source_data": {},
      "validation": {}
    }
  ]
}

DOCUMENT_NOT_FOUND — The submitted document number does not correspond to any record in the registry.

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "NGA",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "DOCUMENT_NOT_FOUND",
      "service_id": "nga_bank_verification_number",
      "service_name": "Nigeria Bank Verification Number (BVN)",
      "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 nga_bank_verification_number currently documents this normalized shape:

date_of_birth
first_name
last_name

Pricing & SLAs

Nigeria Bank Verification Number (BVN) queries are billed only when Didit receives a conclusive result from the validation source.

Per-call price: $0.35 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