> ## Documentation Index > Fetch the complete documentation index at: https://docs.proofage.net/llms.txt > Use this file to discover all available pages before exploring further. # Data models > The verification object and the other objects the API and webhooks return, field by field. The objects below are what the API returns, without an envelope. New fields can be added within `v1`; ignore the ones you do not know. The event sent to your webhook URL is described in [Decision webhook](/api-reference/webhook-decision). ## Verification Returned by `POST /verifications` and `GET /verifications/{verification}`. The verification ID. Keep it next to your user. Your identifier for the person, as sent on create. `null` when the create request was not signed. The metadata you sent on create, returned as sent. Where the person's browser goes after the final screen: the `callback_url` of this verification, or the workspace's redirect URL. One of `created`, `started`, `documents_required`, `submitted`, `review`, `resubmission_requested`, `approved`, `declined`, `abandoned`, `expired`. See [Verification statuses](/integration/verification-statuses). The [decision reason](/core-technology/decision-reasons) when the status is `declined` or `resubmission_requested`; `null` otherwise, and also `null` while the status is `documents_required`. When attempts run out, a `declined` verification carries the last attempt's reason. The result of [duplicate detection](/core-technology/duplicate-detection). `false` until the check has run, and on workspaces where it does not run. How many other accounts (distinct `external_id`s) in the workspace show the same face. The earlier verification. Its `external_id`. How similar the two faces are; higher is more similar. When the earlier verification's identity was recorded. `null` unless the verification's personal data was erased on request. Empty fields then mean "erased", not "never captured". The scheduled deletion of images after the retention period does not set it: those images just have a `null` `url`. See [Data retention and erasure](/console/data-retention). When the data was erased. `personal_data`: media, document fields and analysis results are gone; the status, reason, dates and audit trail remain. `data_subject_request`, `customer_request`, `retention_policy`, `test_data` or `other`. `customer` (your team, in the console or the MCP) or `proofage` (ProofAge staff). When the person accepted the consent text. When the verification was created. When it last changed. Returned by `POST /verifications` only: the link that opens the verification for the person. ## Document result Returned by `GET /verifications/{verification}/document`. `passport`, `id`, `driver_license`, `residence_permit` or `other`; `null` when the type could not be determined. An open enum: handle values you do not know. `other` is a readable document that is not an identity card, passport, driving licence or residence permit, such as a health insurance card. `id` is the same value the upload endpoint takes. The issuing country, ISO 3166-1 alpha-2 (`XK` for Kosovo); `null` when it could not be read. Present on every workspace. The state or province that issued the document, as a bare code beside `issuing_country` (for example `FL` with `US`); `null` when unknown or when `issuing_country` is `null`. Today it is filled for US driving licences and ID cards. Present on every workspace and kept after erasure. What was read from the identity document. Each field is `null` when it was not read or is not printed on the document. Dates are `YYYY-MM-DD`. Age workspaces receive only `first_name`, `last_name`, `date_of_birth` and `document_number`; the seven fields marked KYC workspaces only are absent there. KYC workspaces only. `YYYY-MM-DD`. A partially printed date is `null`, never rounded. KYC workspaces only. `F`, `M` or `X` (an open enum). `X` means the document states that the sex is unspecified. The German identity card prints no sex. `null` on a Mexican voter card or driving licence created before 20 August 2026 17:00 UTC. KYC workspaces only. ISO 3166-1 alpha-2 (`XK` for Kosovo), published only when the document itself states it. Can differ from `issuing_country`, for example on a residence permit. KYC workspaces only. The printed text, not normalised. KYC workspaces only. The printed text as read: trimmed, `null` when empty, not parsed and not normalised. It may contain line breaks. KYC workspaces only. `YYYY-MM-DD`; a partially printed date is `null`. KYC workspaces only. `YYYY-MM-DD`. A document that prints only the month or year reports the last day of that period. A permanent document (for example `PERMANENTE` or `INDEFINIDA`) is `null`. The images of the attempt the decision is based on, selfie first, then the document front and back. `selfie`, `document_front` or `document_back`. An API URL to download the image with a signed request; `null` once the image has been deleted. The attempt these results come from. A verification can have several attempts when the person is asked to try again. ## Age estimation result Returned by `GET /verifications/{verification}/estimation`. The attempt the estimate comes from. The workspace's minimum age. Whether the person was estimated to be at or above it; `null` before the estimate exists. How confident the estimate is in that answer, from 0 to 1. `0` female, `1` male, `null` unknown. From 0 to 1. ## Workspace Returned by `GET /workspace`: the configuration of the workspace the public key belongs to. `kyc` or `age`. `test` or `live`. On `age` workspaces: `estimation` (Facial age estimation) or `document_verification` (Age verification by ID document). On `age` workspaces: the minimum age. What the person is asked for by default: `selfie` or `documents_and_liveness`. The default redirect URL after the final screen. Where decision webhooks are sent: a public `http` or `https` URL, see [the webhook URL](/integration/webhooks#the-webhook-url). Whether expired identity documents are accepted. Whether one face may verify under several `external_id`s. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.