> ## Documentation Index > Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt > Use this file to discover all available pages before exploring further. # Resolve a CID at BACEN > Reads the key binding a CID identifies from BACEN's getEntryByCid, sent with X-ISPB as PI-RequestingParticipant, and projects it verbatim. A CID BACEN no longer binds answers 404 SPI-0012. ## OpenAPI ````yaml /es/openapi/v3-current/spi-dict.yaml get /api/v1/dict/cids/entries/{cid} openapi: 3.1.0 info: contact: email: contact@lerian.studio name: Lerian Studio url: https://lerian.studio description: >- OpenAPI 3.1 surface for the DICT (Diretório de Identificadores de Contas Transacionais) capability of Lerian SPI, the direct integration between the institution and the Brazilian Instant Payment System (SPI/Pix). It covers the PIX key lifecycle, portability and ownership claims, the MED 2.0 dispute surface (infraction reports, refunds, fraud markers, and funds recoveries), antifraud statistics, synchronous DICT reports, and the internal operations that keep the key directory consistent. license: name: Lerian Studio General License title: Lerian SPI — DICT API version: 1.0.0 servers: - url: https://api.example.com description: >- Replace the example host with the URL provided during environment onboarding. security: [] tags: - description: 'PIX key lifecycle: register, list, search, lookup, delete, and statistics.' name: Keys - description: >- PIX key portability and ownership claims through their full lifecycle (initiate, confirm, reject, cancel, acknowledge, complete). name: Claims - description: 'DICT infraction reports: list and retrieve.' name: Infractions - description: 'DICT refund requests: create, list, and retrieve.' name: Refunds - description: 'PIX fraud markers: create, list, and statistics.' name: Fraud Markers - description: >- Durable MED operation-intent status: the operationId every create/lifecycle-transition backlog route returns or references on every outcome, queryable independently of the business resource. name: Operations - description: >- Synchronous reports over Lerian SPI's own DICT record: COUNT(*) summaries of keys (by type/status) and claims (by type/status + open-past-deadline). COUNT-only — DICT holds no money. name: Reports - description: 'Internal DICT operations: claim deadline processing.' name: Internal - description: >- DICT synchronism checks transported to BACEN for the participant named in X-ISPB: sync verification, CID resolution and CID set events, projected verbatim. name: VSync paths: /api/v1/dict/cids/entries/{cid}: get: tags: - VSync summary: Resolve a CID at BACEN description: >- Reads the key binding a CID identifies from BACEN's getEntryByCid, sent with X-ISPB as PI-RequestingParticipant, and projects it verbatim. A CID BACEN no longer binds answers 404 SPI-0012. operationId: getDICTCidEntry parameters: - description: >- ISPB of the participant the call acts for. It must be this deployment's direct participant or an indirect it sponsors; the body never carries it. in: header name: X-ISPB required: true schema: description: >- ISPB of the participant the call acts for. It must be this deployment's direct participant or an indirect it sponsors; the body never carries it. examples: - '12345678' pattern: ^[0-9A-Z]{8}$ type: string - description: CID to resolve, 64 hex characters. in: path name: cid required: true schema: description: CID to resolve, 64 hex characters. examples: - 28c06eb41c4dc9c3ae114831efcac7446c8747777fca8b145ecd31ff8480ae88 pattern: ^[0-9a-fA-F]{64}$ type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/CidEntryResponse' description: OK '403': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Forbidden '404': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Not Found '422': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Unprocessable Entity '429': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Too Many Requests '500': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Internal Server Error '503': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Service Unavailable default: content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Error security: - BearerAuth: [] components: schemas: CidEntryResponse: additionalProperties: false properties: bacen: $ref: '#/components/schemas/BACENEnvelopeResponse' description: >- BACEN's operational envelope for this call; omitted when BACEN sent no correlation id. cid: description: The CID that was resolved. examples: - 28c06eb41c4dc9c3ae114831efcac7446c8747777fca8b145ecd31ff8480ae88 type: string entry: $ref: '#/components/schemas/CidEntryBindingResponse' description: The key binding the CID identifies. requestId: description: >- BACEN's RequestId of the operation that created this binding, from which the CID was computed. Not a request-scoped echo. examples: - 4b6c1e0e-7f7a-4c1e-9d59-3f2a8c1b5e21 type: string required: - cid - entry - requestId type: object Detail: additionalProperties: false properties: code: description: >- Stable, machine-readable domain error code scoped to the emitting service (format: -NNNN). type: string correlationId: description: Request-scoped correlation identifier echoing X-Request-ID. examples: - req-7a3f9c2e type: string detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string upstream: $ref: '#/components/schemas/Upstream' description: >- RFC 9457 extension member: the error a proxied third-party provider reported. Absent unless the emitting service explicitly surfaced one. required: - correlationId type: object BACENEnvelopeResponse: additionalProperties: false properties: correlationId: description: >- BACEN's own correlation identifier for its most recent interaction on this record — the wire value, distinct from any request-scoped echo. examples: - a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4 type: string lastModified: description: >- BACEN's own LastModified for this resource (RFC 3339, UTC) — the version this response reflects; present only on the MED resources (infraction, refund, fraud marker, funds recovery). examples: - '2026-06-14T12:00:00Z' type: string responseTime: description: >- Instant BACEN answered its most recent interaction on this record, RFC 3339 (UTC); omitted when BACEN's response carried no parseable instant. examples: - '2026-06-14T12:00:00Z' type: string required: - correlationId type: object CidEntryBindingResponse: additionalProperties: false properties: account: $ref: '#/components/schemas/CidEntryAccountResponse' description: Account the key is bound to. creationDate: description: When BACEN created the binding, BACEN's wire value. examples: - '2025-03-07T14:30:00.000Z' format: date-time type: string key: description: Pix key value. examples: - '11122233396' type: string keyOwnershipDate: description: >- When the owner's uninterrupted possession of the key began, BACEN's wire value. examples: - '2025-03-07T14:30:00.000Z' format: date-time type: string keyType: description: Key type, verbatim. examples: - CPF type: string owner: $ref: '#/components/schemas/CidEntryOwnerResponse' description: Owner of the key. required: - key - keyType - account - owner type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object Upstream: additionalProperties: false properties: code: description: The upstream provider's own error code, verbatim. examples: - E4001 type: string message: description: >- The upstream provider's own error message, verbatim (bounded, never its raw response body). examples: - account not found at provider type: string type: object CidEntryAccountResponse: additionalProperties: false properties: accountNumber: description: Account number. examples: - '0007654321' type: string accountType: description: Account type, verbatim (CACC, SVGS, TRAN, SLRY, OTHR). examples: - CACC type: string branch: description: Account branch; omitted when BACEN sent none. examples: - '0001' type: string openingDate: description: Account opening date, RFC 3339 (UTC); omitted when BACEN sent none. examples: - '2020-01-15T00:00:00Z' format: date-time type: string participant: description: ISPB of the participant holding the account. examples: - '12345678' type: string required: - participant - accountNumber - accountType type: object CidEntryOwnerResponse: additionalProperties: false properties: name: description: Owner name. examples: - Maria Souza type: string taxIdNumber: description: Owner CPF (11 digits) or CNPJ (14 characters). examples: - '11122233396' type: string tradeName: description: Owner trade name; legal persons only, omitted when absent. examples: - Souza Comercio type: string type: description: 'BACEN''s person type, verbatim: NATURAL_PERSON or LEGAL_PERSON.' examples: - NATURAL_PERSON type: string required: - type - taxIdNumber - name type: object securitySchemes: BearerAuth: bearerFormat: JWT description: JWT bearer token issued by the identity provider. scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.