Didit Proof Of Address

Didit Proof of Address API

Overview

Verifies address documents by submitting images or PDFs. Extracts address information, performs authenticity checks, name matching, geocoding, and returns structured data.

Key constraints:

• Supported formats: JPG, JPEG, PNG, TIFF, PDF
• Maximum file size: 15MB
• Document must be within 90 days of issue date
• Full-color, all corners visible, no digital editing
• Must be different from the ID document used for ID verification

Capabilities: OCR extraction, intelligent document classification, name matching with identity documents, issue date validation, geocoding with lat/lng coordinates, language detection, multi-page support.

Accepted document types:

| Category | Examples | |---|---| | Utility Bill | Electricity, water, gas, internet, phone, combined utilities | | Bank Statement | Account statement, credit card, mortgage, loan | | Government-Issued | Tax assessment, residency certificate, voter registration | | Other PoA | Lease, rental agreement, insurance policy, employer letter |

API Reference: https://docs.didit.me/standalone-apis/proof-of-address Feature Guide: https://docs.didit.me/core-technology/proof-of-address/overview

---

Authentication

All requests require x-api-key header. Get your key from Didit Business Console → API & Webhooks, or via programmatic registration (see below).

Getting Started (No Account Yet?)

If you don't have a Didit API key, create one in 2 API calls:

1. Register: POST https://apx.didit.me/auth/v2/programmatic/register/ with {"email": "you@gmail.com", "password": "MyStr0ng!Pass"}
2. Check email for a 6-character OTP code
3. Verify: POST https://apx.didit.me/auth/v2/programmatic/verify-email/ with {"email": "you@gmail.com", "code": "A3K9F2"} → response includes api_key

To add credits: GET /v3/billing/balance/ to check, POST /v3/billing/top-up/ with {"amount_in_dollars": 50} for a Stripe checkout link.

See the didit-verification-management skill for full platform management (workflows, sessions, users, billing).

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Endpoint

POST https://verification.didit.me/v3/poa/

Headers

| Header | Value | Required | |---|---|---| | x-api-key | Your API key | Yes | | Content-Type | multipart/form-data | Yes |

Request Parameters (multipart/form-data)

| Parameter | Type | Required | Default | Description | |---|---|---|---|---| | document | file | Yes | — | PoA document (JPG/PNG/TIFF/PDF, max 15MB) | | save_api_request | boolean | No | true | Save in Business Console | | vendor_data | string | No | — | Your identifier for session tracking |

Example

import requests

response = requests.post(
    "https://verification.didit.me/v3/poa/",
    headers={"x-api-key": "YOUR_API_KEY"},
    files={"document": ("utility_bill.pdf", open("bill.pdf", "rb"), "application/pdf")},
    data={"vendor_data": "user-123"},
)
print(response.json())

const formData = new FormData();
formData.append("document", documentFile);

const response = await fetch("https://verification.didit.me/v3/poa/", {
  method: "POST",
  headers: { "x-api-key": "YOUR_API_KEY" },
  body: formData,
});

Response (200 OK)

{
  "request_id": "a1b2c3d4-...",
  "poa": {
    "status": "Approved",
    "issuing_state": "ESP",
    "document_type": "UTILITY_BILL",
    "issuer": "Endesa",
    "issue_date": "2025-01-15",
    "document_language": "es",
    "name_on_document": "Elena Martínez Sánchez",
    "poa_address": "Calle Mayor 10, 28013 Madrid",
    "poa_formatted_address": "Calle Mayor 10, 28013 Madrid, Spain",
    "poa_parsed_address": {
      "street_1": "Calle Mayor 10",
      "city": "Madrid",
      "region": "Comunidad de Madrid",
      "postal_code": "28013",
      "raw_results": {
        "geometry": {"location": {"lat": 40.4168, "lng": -3.7038}}
      }
    },
    "document_file": "https://example.com/document.pdf",
    "warnings": []
  },
  "created_at": "2025-05-01T13:11:07.977806Z"
}

Status Values & Handling

| Status | Meaning | Action | |---|---|---| | "Approved" | Address verified, document valid | Proceed with your flow | | "Declined" | Document invalid or expired | Check warnings for specific reason | | "In Review" | Needs manual review | Check for name mismatch or quality issues | | "Not Finished" | Processing incomplete | Wait or retry |

Error Responses

| Code | Meaning | Action | |---|---|---| | 400 | Invalid request | Check file format, size, parameters | | 401 | Invalid API key | Verify x-api-key header | | 403 | Insufficient credits | Top up at business.didit.me |

---

Response Field Reference

| Field | Type | Description | |---|---|---| | status | string | "Approved", "Declined", "In Review", "Not Finished" | | issuing_state | string | ISO 3166-1 alpha-3 country code | | document_type | string | "UTILITY_BILL", "BANK_STATEMENT", "GOVERNMENT_ISSUED_DOCUMENT", "OTHER_POA_DOCUMENT", "UNKNOWN" | | issuer | string | Issuing institution name | | issue_date | string | YYYY-MM-DD | | document_language | string | Detected language code | | name_on_document | string | Extracted name | | poa_address | string | Raw extracted address | | poa_formatted_address | string | Formatted address | | poa_parsed_address | object | {street_1, street_2, city, region, postal_code} | | poa_parsed_address.raw_results.geometry.location | object | {lat, lng} geocoded coordinates | | document_file | string | Temporary URL (expires 60 min) | | warnings | array | {risk, log_type, short_description, long_description} |

---

Warning Tags

Auto-Decline

| Tag | Description | |---|---| | POA_DOCUMENT_NOT_SUPPORTED_FOR_APPLICATION | Document type not accepted for your app | | EXPIRED_DOCUMENT | Document older than 90 days | | INVALID_DOCUMENT_TYPE | Document cannot be processed | | MISSING_ADDRESS_INFORMATION | No valid address could be extracted |

Configurable (Decline / Review / Approve)

| Tag | Description | |---|---| | NAME_MISMATCH_WITH_PROVIDED | Name doesn't match verified identity | | NAME_MISMATCH_ID_VERIFICATION | Name doesn't match ID document | | POA_NAME_MISMATCH_BETWEEN_DOCUMENTS | Names differ between multiple PoA docs | | POOR_DOCUMENT_QUALITY | Insufficient image quality | | DOCUMENT_METADATA_MISMATCH | Digital signature/metadata indicates tampering | | SUSPECTED_DOCUMENT_MANIPULATION | Signs of document manipulation | | UNSUPPORTED_DOCUMENT_LANGUAGE | Document language not supported | | ADDRESS_MISMATCH_WITH_PROVIDED | Address doesn't match provided address | | UNABLE_TO_EXTRACT_ISSUE_DATE | Could not determine issue date | | ISSUER_NOT_IDENTIFIED | Could not identify issuing institution | | UNPARSABLE_OR_INVALID_ADDRESS | Address couldn't be parsed | | UNABLE_TO_VALIDATE_DOCUMENT_AGE | Could not determine document age | | FUTURE_ISSUE_DATE | Issue date is in the future |

Warning severity: error (→ Declined), warning (→ In Review), information (no effect).

---

Common Workflows

Basic Address Verification

1. POST /v3/poa/ → {"document": utility_bill}
2. If "Approved" → address verified
   If "Declined" → check warnings:
     EXPIRED_DOCUMENT → ask for a more recent document
     MISSING_ADDRESS_INFORMATION → ask for clearer image
     NAME_MISMATCH → verify identity matches

Full KYC with Address

1. POST /v3/id-verification/ → verify identity document
2. POST /v3/passive-liveness/ → verify real person
3. POST /v3/poa/ → verify address
4. System auto-matches name between ID and PoA documents
5. All Approved → identity + address verified

---

Utility Scripts

verify_address.py: Verify proof of address documents from the command line.

# Requires: pip install requests
export DIDIT_API_KEY="your_api_key"
python scripts/verify_address.py utility_bill.pdf
python scripts/verify_address.py bank_statement.jpg --vendor-data user-123

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: didit-protocol
• Source: didit-protocol/skills
• License: MIT

Install and usage instructions live in the source repository linked above.