us_voter_registration_card

US voter registration card

Voter registration card issued by a US county or state (Form I-9 List B).

Category: Identity
Country: United States
Extracted fields: 10 fields
Cost: 1 credit

us_voter_registration_cardspecimen

Document number
First name
Last name
Date of birth
Issuing state
County
Address
Precinct
Party

What it checks

Holder. Name, number or date of birth match what you expect.
Age. Minimum or maximum age from the date of birth.
Form I-9. Whether the document belongs to list A, B or C.B

Extracted fields

Document numberdocument_number
First namefirst_name
Last namelast_name
Date of birthbirth_date
Issuing stateissuing_state
Countycounty
Addressaddress
Precinctprecinct
Partyparty
Issue dateissue_date

Sample request

curl https://api.constaia.com/v1/analyze \
  -H "Authorization: Bearer $CONSTAIA_API_KEY" \
  -F "file=@document.pdf" \
  -F 'options={
    "expect": "us_voter_registration_card",
    "checks": {
      "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": "us_voter_registration_card",
    "label": "US voter registration card",
    "confidence": 0.97
  },
  "verdict": {
    "expected": [
      "us_voter_registration_card"
    ],
    "match": true,
    "status": "valid",
    "reasons": [
      {
        "code": "type_match",
        "severity": "info",
        "message": "The document is: US voter registration card."
      }
    ]
  },
  "fields": {
    "document_number": {
      "value": "123456789",
      "confidence": 0.99,
      "validated": true
    },
    "first_name": {
      "value": "JANE",
      "confidence": 0.98,
      "validated": null
    },
    "last_name": {
      "value": "SPECIMEN",
      "confidence": 0.97,
      "validated": null
    },
    "issuing_state": {
      "value": "TX",
      "confidence": 0.96,
      "validated": null
    },
    "county": {
      "value": "TRAVIS",
      "confidence": 0.99,
      "validated": null
    },
    "address": {
      "value": "100 CONGRESS AVE, AUSTIN, TX 78701",
      "confidence": 0.98,
      "validated": null
    },
    "precinct": {
      "value": "101",
      "confidence": 0.97,
      "validated": null
    },
    "issue_date": {
      "value": "2024-01-01",
      "confidence": 0.96,
      "validated": null
    }
  },
  "checks": [],
  "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…

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