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POST
/
v3
/
database-validation
/
curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=ZAF" \
  -F "services=zaf_dha_fingerprint_match" \
  -F "vendor_data=user-1234" \
  -F "consent=true" \
  -F "national_id=SAMPLE-NID-12345" \
  -F "right_thumb=RIGHT_THUMB_TEMPLATE" \
  -F "left_thumb=LEFT_THUMB_TEMPLATE"

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "ZAF",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "zaf_dha_fingerprint_match",
      "service_name": "South Africa - DHA Fingerprint Match",
      "source_data": {
        "identification_number": "SAMPLE-ID-12345"
      },
      "validation": {
        "identification_number": "full_match"
      }
    }
  ]
}
Verifies provided fingerprint images against the Department of Home Affairs fingerprint register. 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.

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Coverage

  • Coverage: —
  • Country: South Africa
  • Service ID: zaf_dha_fingerprint_match
  • Data domain: Biometric
  • Category: Government

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Inputs

FieldRequiredExample
national_idYesSAMPLE-NID-12345
right_thumbYesRIGHT_THUMB_TEMPLATE
left_thumbYesLEFT_THUMB_TEMPLATE
vendor_dataNouser-1234
  • Required inputs: national_id, right_thumb, left_thumb
  • Optional inputs: vendor_data
  • Consent: Required
  • Workflow availability: Standalone API only
  • Coverage: —
  • Price: $1.10 per successful query

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Body parameters

​
issuing_state
string
default:"ZAF"
required
ISO 3166-1 alpha-3 country code for this database service.Example: ZAF
​
services
string
default:"zaf_dha_fingerprint_match"
required
Array containing this service ID. Pinning the service keeps the request scoped to this exact database.Example: zaf_dha_fingerprint_match
​
consent
boolean
default:"true"
required
Explicit end-user consent for this service.Example: true
​
national_id
string
default:"SAMPLE-NID-12345"
required
National identity number for this service.Example: SAMPLE-NID-12345
​
right_thumb
string
default:"RIGHT_THUMB_TEMPLATE"
required
right_thumb value required by this database service.Example: RIGHT_THUMB_TEMPLATE
​
left_thumb
string
default:"LEFT_THUMB_TEMPLATE"
required
left_thumb value required by this database service.Example: LEFT_THUMB_TEMPLATE
​
vendor_data
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

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Input rules & validation notes

  • Send the fields listed above exactly as captured from the user or document.
  • Didit validates required fields before calling the database. Requests rejected before source lookup are not charged.

​
How to call it

curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=ZAF" \
  -F "services=zaf_dha_fingerprint_match" \
  -F "vendor_data=user-1234" \
  -F "consent=true" \
  -F "national_id=SAMPLE-NID-12345" \
  -F "right_thumb=RIGHT_THUMB_TEMPLATE" \
  -F "left_thumb=LEFT_THUMB_TEMPLATE"

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.

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Returned data

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

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Pricing & SLAs

South Africa - DHA Fingerprint Match queries are billed only when Didit receives a conclusive result from the validation source.
  • Per-call price: $1.10 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.

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