> ## Documentation Index > Fetch the complete documentation index at: https://docs.auth.energy/llms.txt > Use this file to discover all available pages before exploring further. # Look Up Identity Records > Returns Identity Records matching the supplied lookup parameters. Used by a Data User to locate an existing record for a returning customer before initiating re-identification. At least one of `mpxn` or `email` must be supplied. Supplying both narrows results to records where both values match. Results are scoped to the authenticated Data User — a Data User cannot look up records created by another Data User. **Note on email lookup:** The register stores a one-way hash of the email address for lookup purposes. The plaintext email is never returned in responses. A match confirms a record exists for that address; the Data User should already hold the email in their own system. ## OpenAPI ````yaml /data-access-register/api/openapi-dar.yaml get /identity-records openapi: 3.1.0 info: title: Data Access Register description: > Core APIs for the Central Data Access Register. The register records all lawful access to customer energy data by Controllers, regardless of the legal basis on which that access rests. It is not exclusively a consent register — legitimate interests, public task, legal obligation, and contract are all within scope alongside consent-based access. **Jurisdiction:** This is a UK-only solution. All Controllers, customers, and meter points are within Great Britain. The governing data protection framework is **UK GDPR** and the **Data Protection Act 2018**. EU GDPR does not apply. The jurisdiction field is fixed to `GB` and does not need to be supplied. ## Purpose The register provides a single, auditable source of truth for: - **Controllers** — to record and demonstrate the legal basis under which they access customer meter data. - **Data Providers** — to verify that a Controller has a registered, active access record before releasing data. - **Customers** — to view all parties registered as having lawful access to their meter point, on request via any Controller. ## Party Model | Party | UK GDPR Role | Description | |---|---|---| | **Data User** | Processor | Operates the register. Fetches and processes meter data on behalf of Controllers. Authenticated via bearer token. | | **Controller** | Data Controller | A B2B customer of the Data User. One or more Controllers may be registered per access record — sole, joint (Art. 26), or group (trading name transparency). Bears GDPR accountability for the legal basis and its ongoing validity. | | **Customer** | Data Subject | The energy customer. Identified by MPxN to minimise PII held centrally. | | **Data Provider** | Data Source | Holds meter data. Verifies access records before releasing data via `GET /access-records/{ak}`. | ## Record Structure All access records share a single schema — `AccessRecord` — with four sections aligned to ISO/IEC TS 27560:2023: 1. **`record-metadata`** — record identifier, creation timestamp, controller arrangement (sole, joint, or group), and a reference to the associated Identity Record. Present for all records. 2. **`notice`** — the privacy notice(s) presented to the customer. Present only for consent-based records; null for all other legal bases. Supports a single shared notice (common) or per-controller notices (joint arrangements where controllers discharge Art. 13 obligations separately). 3. **`processing`** — legal basis, purpose, data types, and related obligations. Present for all records. Per-controller compliance fields (privacy rights URL, LIA reference, statutory reference, storage conditions) are held on each controller entry within `record-metadata.controller-arrangement`. 4. **`access-event`** — when and how access was registered or consent was obtained; current lifecycle state. Present for all records. The `notice` and `access-event.consent` sub-object are null for non-consent records. The `access-event.consent` sub-object is null for non-consent records and populated for consent records. ## Identity Records The person-property relationship — who the individual is and their occupancy of the meter point — is held separately in an **Identity Record** (`/identity-records`). This keeps PII (MPxN, address, move-in date) and identity verification evidence out of the access record entirely. Each `AccessRecord` carries an `identity-record-ref` (`ir` key) linking it to its Identity Record. Identity Records are accessible only to authenticated Data Users. The unauthenticated `GET /access-records/{ak}` endpoint used by Data Providers never returns PII. Identity Records support two re-identification flows to reconnect a returning customer to an existing record without re-collecting all their details: - **Magic link** — a short-lived email link triggers re-identification. - **Passkey** — initiates a WebAuthn registration or assertion ceremony. ## Legal Basis and Required Fields The `processing.legal-basis` value determines which fields within `notice` and `access-event.consent` are expected: | Legal basis | `notice` | `access-event.consent` | |---|---|---| | `uk-consent`, `uk-explicit-consent` | **Required** | **Required** | | All other bases | Must be null | Must be null | For legitimate interests records, `lia-reference` should be supplied on the lead controller entry within `record-metadata.controller-arrangement`. For public task or legal obligation records, `statutory-reference` should be supplied on the lead controller entry. ## Access Record Lifecycle Records are never hard-deleted. All state transitions are recorded with timestamps. ``` [ACTIVE] ──revoke──▶ [REVOKED] [ACTIVE] ──expiry──▶ [EXPIRED] [DISCOVERED] ──claimed──▶ [ACTIVE] [DISCOVERED] ──expiry──▶ [EXPIRED] ``` `REVOKED` represents consent withdrawal (consent records) or the Controller removing their registration (non-consent records). Data Providers must deny access for any record not in `ACTIVE` state with a future (or null) expiry. `DISCOVERED` is a sparse, read-only state created by the DCC when it detects historic meter data requests from an organisation that has not yet registered as a Data User. These records are visible to Customers for transparency but cannot be used to authorise data release. When the organisation onboards as a Data User and registers a full access record for the same MPxN, the DISCOVERED record is superseded and transitions to `ACTIVE`. ## Authentication All endpoints except `GET /access-records/{ak}` require a bearer token from `GET /auth/token`. Tokens expire after 7200 seconds. ## Versioning URI-based versioning. Current version: `v1`. version: 0.0.16 contact: name: Auth Energy email: contact@auth.energy url: https://docs.auth.energy/consent license: name: Proprietary servers: - url: https://api.central.consent/v1 description: Production security: [] tags: - name: Identity Records description: > Endpoints for Data Users to create and manage Identity Records, which hold the person-property relationship (MPxN, address, move-in date, identity verification evidence) separately from access records. Supports re-identification of returning customers via email magic link or WebAuthn passkey. - name: Re-identification description: >- Endpoints for initiating and confirming customer re-identification flows. Supports magic link, passkey assertion, and passkey registration — both for the same Data User (same-DUID) and for a second Data User linking to an existing Identity Record created by another Data User (cross-DUID). In the cross-DUID flow the `ir` key is never exposed to the initiating Data User — the register resolves it internally after the customer completes the challenge. - name: Authentication description: Obtain bearer tokens for authenticated endpoints. - name: Data Users description: > Endpoints for Data Users (Processors) to register and manage access records on behalf of their Controller customers. - name: Data Providers description: > Endpoints for Data Providers (EDPs) to verify access records and look up registered Data User organisations before releasing meter data. Includes access record verification via access key and Data User directory lookup by DUID, allowing EDPs to confirm both that a specific record is active and that the organisation behind it is in good standing. - name: DCC description: > Endpoints restricted to Smart DCC system credentials. Covers two responsibilities: (1) submitting discovered access records derived from historic meter transaction logs — sparse, read-only records that surface to customers for transparency but cannot authorise data release, superseded when the organisation registers as a Data User; and (2) submitting Change of Tenancy events, which trigger `tenancy.change` webhooks to all Data Users with active access records on the affected MPxN. - name: Customer Portal description: > The centralised Customer Consent Portal is a standalone web service at https://portal.central.consent. It has no API endpoints — Data Users link customers to the portal via a plain URL carrying `ir` or `mpxn` and an optional `return` parameter. The portal authenticates the customer directly using the re-identification mechanisms on their Identity Record (passkey, magic link, or supplier OAuth fallback). This tag documents the portal behaviour and the `consent.withdrawal` webhook it fires on revocation. - name: Webhooks description: > Endpoints for Controllers to register and manage webhook subscriptions. The register dispatches event payloads to registered callback URLs when consent records are approaching expiry or when a Change of Tenancy is recorded against an MPxN with active access records. paths: /identity-records: get: tags: - Identity Records summary: Look Up Identity Records description: > Returns Identity Records matching the supplied lookup parameters. Used by a Data User to locate an existing record for a returning customer before initiating re-identification. At least one of `mpxn` or `email` must be supplied. Supplying both narrows results to records where both values match. Results are scoped to the authenticated Data User — a Data User cannot look up records created by another Data User. **Note on email lookup:** The register stores a one-way hash of the email address for lookup purposes. The plaintext email is never returned in responses. A match confirms a record exists for that address; the Data User should already hold the email in their own system. operationId: lookupIdentityRecords parameters: - name: mpxn in: query required: false description: Filter by meter point identifier. schema: $ref: '#/components/schemas/MPxN' - name: email in: query required: false description: > Filter by customer email address. Matched against a stored hash — the plaintext is not retained in results. schema: type: string format: email responses: '200': description: Matching identity records returned. content: application/json: schema: $ref: '#/components/schemas/LookupIdentityRecordsResponse' example: response: resource: /v1/identity-records?mpxn=1234567890123 timestamp: '2026-03-24T09:00:00Z' transaction-id: tid_abc123def456abc123def456 identity-records: - ir: ir_a3c5e7f9b1d3a3c5e7f9b1d3 created-at: '2024-01-15T09:30:00Z' pii-principal: mpxn: '1234567890123' move-in-date: '2022-06-30' expressed-by: data-subject has-email: true credentials: - credential-id: cred_1a2b3c4d5e6f1a2b3c4d5e6f registered-at: '2024-01-15T09:35:00Z' '400': description: Neither `mpxn` nor `email` was supplied. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': $ref: '#/components/responses/Unauthorised' '403': $ref: '#/components/responses/Forbidden' '500': $ref: '#/components/responses/InternalServerError' security: - bearerAuth: [] components: schemas: MPxN: type: string pattern: ^(?:[0-9A-HJ-NPR-Z]{2}[0-9]{8,10}|[0-9]{10})$ description: >- Meter Point Administration Number (MPAN) or Meter Point Reference Number (MPRN). example: '1234567890123' LookupIdentityRecordsResponse: type: object properties: response: $ref: '#/components/schemas/ResponseMetadata' identity-records: type: array items: $ref: '#/components/schemas/IdentityRecord' required: - response - identity-records ErrorResponse: type: object properties: response: $ref: '#/components/schemas/ResponseMetadata' errors: type: array minItems: 1 items: $ref: '#/components/schemas/ErrorDetail' required: - response - errors ResponseMetadata: type: object properties: resource: type: string example: /v1/access-records/ak_691df0c788ca043403b7fa90 timestamp: type: string format: date-time example: '2026-03-11T12:00:00Z' transaction-id: type: string description: >- Unique identifier for this request/response pair. Quote in support enquiries. example: tid_691df0c788ca043403b7fa90 required: - resource - timestamp - transaction-id IdentityRecord: type: object description: > Holds the person-property relationship for a consent or access registration. Returned by `GET /identity-records/{ir}`. The `email` field is never returned in plaintext — `has-email` indicates whether an email address is stored. Passkey public keys are never returned — `credentials` contains only metadata (ID, registered-at, transports). `ir` and `created-at` are assigned by the register on creation. properties: ir: $ref: '#/components/schemas/IdentityRecordKey' readOnly: true created-at: type: string format: date-time readOnly: true description: UTC timestamp when this record was created in the register. example: '2024-01-15T09:30:00Z' pii-principal: nullable: true description: Null if the record has been anonymised. allOf: - $ref: '#/components/schemas/PIIPrincipal' expressed-by: nullable: true allOf: - $ref: '#/components/schemas/ExpressionByEntity' principal-verification: nullable: true allOf: - $ref: '#/components/schemas/PrincipalVerification' has-email: type: boolean readOnly: true description: > `true` if an email address is stored on this record (enabling magic-link re-identification). The address itself is never returned. example: true credentials: type: array readOnly: true description: > Metadata for registered passkey credentials. Public key material is never returned. Empty if no passkeys are registered. items: $ref: '#/components/schemas/PasskeyCredentialSummary' anonymised-at: type: string format: date-time nullable: true readOnly: true description: > UTC timestamp of anonymisation, if the record has been anonymised via `DELETE /identity-records/{ir}`. Null otherwise. example: null required: - ir - created-at - has-email - credentials ErrorDetail: type: object properties: error-code: type: string example: VAL001 message: type: string example: Field 'mpxn' does not match the required pattern. required: - error-code - message IdentityRecordKey: type: string pattern: ^ir_[0-9a-f]{24}$ description: > Unique opaque identifier for an Identity Record, issued by the register on creation. Referenced from `record-metadata.identity-record-ref` on an AccessRecord to link the two resources. example: ir_a3c5e7f9b1d3a3c5e7f9b1d3 PIIPrincipal: type: object description: > Identifies the customer and their property. MPxN is the primary identifier; personal name and email are excluded to minimise PII held centrally. properties: mpxn: $ref: '#/components/schemas/MPxN' move-in-date: type: string format: date description: > Date the customer began occupying the property. Establishes the earliest point from which data access applies (inclusive). example: '2022-06-30' address: $ref: '#/components/schemas/UKAddress' required: - mpxn - move-in-date ExpressionByEntity: type: string description: > Who expressed consent. Only applicable when `legal-basis` is a consent value. - `data-subject` — the customer themselves. - `authorised-representative` — a third party acting on the customer's behalf (e.g. a landlord or property manager acting for a tenant). enum: - data-subject - authorised-representative PrincipalVerification: type: object description: > Records how the Controller verified the identity of the principal *before* consent was obtained. Identity verification and consent expression are distinct processes: - **Verification** confirms that the person is who they claim to be. - **Consent** records that the verified person agreed to processing. This object captures the verification event in a generic envelope applicable to all methods. Method-specific supplementary data that does not fit the standard fields may be placed in `detail`. `submitted` must always be redacted — the register must never hold a full card number, full account number, or other unredacted sensitive credential. properties: method: type: string maxLength: 100 description: > The verification mechanism used to confirm the principal's identity (e.g. "credit-card", "account-postcode", "in-home-display", "gov-id-check", "existing-authenticated-session"). example: credit-card verified-at: type: string format: date-time description: UTC timestamp of when the verification was performed. example: '2023-11-07T05:31:00Z' outcome: type: string enum: - verified - failed - partial description: > Result of the verification check. - `verified` — identity confirmed. - `failed` — verification was attempted but could not be confirmed. - `partial` — some signals matched but full verification was not achieved (e.g. postcode matched but name did not). example: verified reference: type: string maxLength: 255 description: > Opaque reference to the verification event in the external system. Allows the Controller to look up the full verification record (e.g. Stripe charge ID, IHD session ID, CRM verification ticket number). example: ch_3ABC123xyz submitted: type: string maxLength: 255 description: > Redacted representation of the credential or value submitted by the principal (e.g. "XXXX-XXXX-XXXX-4242", "postcode SW1A 1AA", "IHD code 6-digit entry"). Must never contain unredacted sensitive data. example: XXXX-XXXX-XXXX-4242 verified-against: type: string maxLength: 255 description: > Description of what the submitted value was checked against (e.g. "Stripe customer record cus_ABC123", "Smart meter pairing code issued by DCC", "Utility account postcode on file in CRM"). example: Stripe customer record cus_ABC123 detail: type: object additionalProperties: true description: > Freeform object for method-specific supplementary data not captured by the standard fields. Controllers may include any additional verification metadata here (e.g. card brand, device ID, assurance level). example: last4: '4242' brand: visa stripe_customer: cus_ABC123 required: - method - verified-at - outcome PasskeyCredentialSummary: type: object description: > Metadata for a registered passkey credential. Public key material is never returned — only the credential ID and registration timestamp. properties: credential-id: $ref: '#/components/schemas/CredentialId' registered-at: type: string format: date-time description: UTC timestamp when this credential was registered. example: '2024-01-15T09:35:00Z' transports: type: array description: > Authenticator transport hints as reported by the browser at registration (e.g. "internal", "hybrid", "usb"). Informational only. items: type: string example: - internal required: - credential-id - registered-at UKAddress: type: object properties: addressLine1: type: string maxLength: 100 example: 221B Baker Street addressLine2: type: string maxLength: 100 nullable: true example: Marylebone townCity: type: string maxLength: 100 example: London county: type: string maxLength: 100 nullable: true example: Greater London postcode: type: string pattern: ^[A-Z]{1,2}[0-9][0-9A-Z]? ?[0-9][A-Z]{2}$ example: NW1 6XE required: - addressLine1 - townCity - postcode CredentialId: type: string pattern: ^cred_[0-9a-f]{24}$ description: Unique identifier for a registered passkey credential. example: cred_1a2b3c4d5e6f1a2b3c4d5e6f responses: Unauthorised: description: Missing or invalid bearer token. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' Forbidden: description: Authenticated caller lacks permission for this action. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' InternalServerError: description: An unexpected server-side error occurred. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT description: >- JWT from `GET /auth/token`. Pass as `Authorization: Bearer `. Expires after 7200s. ````