> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aropay.aro.media/llms.txt
> Use this file to discover all available pages before exploring further.

# Get transaction receipt

> Produce a notarized Notareum receipt (`.nota` file) for a transaction
that reached the chain. Returns `400` while the transaction cannot yet
be represented (e.g. no hash yet); retry after it confirms.




## OpenAPI

````yaml /api-reference/openapi.yaml get /transactions/{id}/nota
openapi: 3.1.0
info:
  title: AroPay API
  version: 1.0.0
  description: |
    The AroPay API for orchestrating sealed, private payments on public
    ledgers, built on the Aro Confidential Rails (Zama Protocol FHE). The
    current deployment is an MVP sandbox for B2B users on Ethereum Sepolia,
    with Mainnet to follow.

    Every response (except the flat Sandbox probes)
    uses the shared envelope: `{ "ok": true, "data": … }` on success and
    `{ "ok": false, "error": { "code", "message", "details?" } }` on failure.

    Amounts are decimal strings in human units (e.g. `"125.50"`). Write
    requests must send `Content-Type: application/json`.
  contact:
    name: Aro Media
    url: https://aro.media
servers:
  - url: https://aropay.aro.media/api/v1
    description: Sandbox
  - url: http://aropay.localhost:3000/api/v1
    description: Local development
security:
  - apiKeyAuth: []
  - sessionCookie: []
tags:
  - name: Auth
    description: Password, TOTP, and passkey login; session inspection and logout.
  - name: Profile & security
    description: Profile, password, two-factor authentication, and passkey management.
    x-group: Profile & security
  - name: API keys
    description: Programmatic credentials. Creation and revocation are session-only.
  - name: Wallets
    description: Custodial and external (watch-only) wallets.
  - name: Balances
    description: Balance triples and lightweight gas reads.
  - name: Money movement
    description: Faucet funding, minting, transfers, and redemptions.
  - name: Transactions
    description: History, single-transaction reads, and notarized receipts.
  - name: Sandbox
    description: Unauthenticated status and echo probes with a flat response shape.
paths:
  /transactions/{id}/nota:
    get:
      tags:
        - Transactions
      summary: Get transaction receipt
      description: |
        Produce a notarized Notareum receipt (`.nota` file) for a transaction
        that reached the chain. Returns `400` while the transaction cannot yet
        be represented (e.g. no hash yet); retry after it confirms.
      operationId: getTransactionReceipt
      parameters:
        - $ref: '#/components/parameters/TransactionId'
      responses:
        '200':
          description: Receipt file.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NotaEnvelope'
              example:
                ok: true
                data:
                  filename: redeem-cktxn0004-receipt.nota
                  nota: …serialized Notareum receipt…
        '400':
          description: Receipt cannot yet be represented.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/AccountDisabled'
        '404':
          $ref: '#/components/responses/NotFound'
        '429':
          $ref: '#/components/responses/RateLimited'
        '500':
          $ref: '#/components/responses/InternalError'
components:
  parameters:
    TransactionId:
      name: id
      in: path
      required: true
      schema:
        type: string
      description: Transaction ID.
  schemas:
    NotaEnvelope:
      type: object
      required:
        - ok
        - data
      properties:
        ok:
          const: true
        data:
          type: object
          required:
            - filename
            - nota
          properties:
            filename:
              type: string
              description: Suggested filename for the `.nota` file.
            nota:
              type: string
              description: Serialized Notareum resource. Treat as an opaque blob.
    ErrorResponse:
      type: object
      description: The shared failure envelope.
      required:
        - ok
        - error
      properties:
        ok:
          const: false
        error:
          type: object
          required:
            - code
            - message
          properties:
            code:
              type: string
              description: Machine-readable error code; match on this, not `message`.
            message:
              type: string
            details:
              description: Structured context, e.g. per-field validation issues.
  responses:
    Unauthorized:
      description: Missing or invalid credential.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            ok: false
            error:
              code: invalid_api_key
              message: Invalid API key.
    AccountDisabled:
      description: The account has been deactivated.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            ok: false
            error:
              code: account_disabled
              message: This account is disabled.
    NotFound:
      description: Resource not found within this account.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            ok: false
            error:
              code: not_found
              message: Resource not found.
    RateLimited:
      description: Rate limit exceeded.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            ok: false
            error:
              code: rate_limited
              message: Too many requests. Try again shortly.
    InternalError:
      description: Unexpected server error.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            ok: false
            error:
              code: internal_error
              message: An unexpected error occurred.
  securitySchemes:
    apiKeyAuth:
      type: http
      scheme: bearer
      bearerFormat: aro_sk_…
      description: |
        AroPay API key, sent as `Authorization: Bearer aro_sk_…`. Created in
        the dashboard under Settings → API keys. Takes precedence over a
        session cookie when both are present.
      x-default: aro_sk_your_key_here
    sessionCookie:
      type: apiKey
      in: cookie
      name: aropay_session
      description: |
        Browser session cookie minted by `POST /auth/login` (or passkey
        login). httpOnly, `SameSite=Lax`, 24 h TTL. Endpoints marked
        **Session-only** accept only this credential and return
        `403 session_required` for API keys.

````