> ## Documentation Index > Fetch the complete documentation index at: https://docs.hub2.io/llms.txt > Use this file to discover all available pages before exploring further. # Get a proof upload URL > Returns a pre-signed URL to upload a deposit proof file directly to the storage, and the blob name to reference when submitting the proof. ## OpenAPI ````yaml get /deposits/proof-upload-uri openapi: 3.0.0 info: title: Hub2 Service · Api description: |- This is the Hub2 api reference | Please check https://docs.hub2.io/ for the full documentation | Rate limits of endpoints are here : https://docs.hub2.io/en/details/limits.html. version: 2.177.0 contact: name: Hub2 url: https://www.hub2.io/ email: contact@hub2.io servers: [] security: [] tags: - name: Payments description: >- Best known as the PAY-IN API, it provides endpoints for merchants to perform Hub2 PAY-IN transactions. - name: Transfers description: >- Best known as the PAY-OUT API, it provides endpoints for merchants to perform Hub2 PAY-OUT transactions. - name: IRT description: International Remittance Transfers - name: Balance description: '' - name: Webhooks description: '' - name: Provisioning description: '' - name: Payment on Terminal description: '' - name: Receipt description: '' - name: Sms description: '' - name: Data description: '' - name: Compliance description: '' - name: Recipient description: '' - name: Delegation description: '' - name: Deposits description: '' - name: Payment Links description: '' - name: Subscription Links description: '' - name: Submerchants description: '' - name: Bill Payments description: '' - name: Subscriptions description: '' - name: Subscription Intents description: >- Enrolls a customer in card-on-file recurring debits and tracks how each enrollment ended. - name: Instant Payment description: >- Instant payment (PI SPI, BCEAO) resources, such as the aliases naming your accounts in the national directory. paths: /deposits/proof-upload-uri: get: tags: - Deposits summary: Get a proof upload URL description: >- Returns a pre-signed URL to upload a deposit proof file directly to the storage, and the blob name to reference when submitting the proof. operationId: DepositController_getProofUploadUri parameters: - name: ApiKey in: header description: >- Your api key. To create a key, please get into our dashboard. If you don't have access to it, please reach the Support team. required: true schema: type: string - name: MerchantId in: header description: >- Your merchant ID. This information is available in our dashboard. If you don't have access to it, please reach the Support team. required: true schema: type: string - name: Environment in: header description: >- Allow you to choose between the sandbox mode to perform some tests or the live mode for real world transactions. required: true schema: type: string enum: - live - sandbox responses: '200': description: '' content: application/json: schema: $ref: '#/components/schemas/ProofUploadUriDto' '401': description: Wrong credentials content: application/json: schema: $ref: '#/components/schemas/ApiUnauthorizedErrorAlias' '403': description: Forbidden content: application/json: schema: $ref: '#/components/schemas/ApiForbiddenRequestErrorAlias' '429': description: 'ThrottlerException: Too Many Requests' content: application/json: schema: $ref: '#/components/schemas/ApiTooManyRequestErrorAlias' '500': description: Internal error content: application/json: schema: $ref: '#/components/schemas/ApiInternalErrorAlias' components: schemas: ProofUploadUriDto: type: object properties: url: type: string description: >- Pre-signed URL to upload the proof file directly to the blob storage (PUT). example: >- https://account.blob.core.windows.net/deposit-proofs/proof-uuid?sv=...&sig=... blobName: type: string description: >- The blob name to reference when submitting the proof metadata after upload. example: proof-3f2504e0-4f89-41d3-9a0c-0305e82c3301 required: - url - blobName ApiUnauthorizedErrorAlias: type: object properties: status: type: number description: HTTP error code. example: 401 error: description: HTTP error description. allOf: - $ref: '#/components/schemas/InternalApiUnauthorizedError' required: - status - error ApiForbiddenRequestErrorAlias: type: object properties: status: type: number description: status enum: - 403 example: 403 error: description: Error object allOf: - $ref: '#/components/schemas/ForbiddenErrorObject' required: - status - error ApiTooManyRequestErrorAlias: type: object properties: status: type: number description: status enum: - 429 example: 429 error: type: string description: Error example: 'ThrottlerException: Too Many Requests' required: - status - error ApiInternalErrorAlias: type: object properties: type: type: string description: The type of this error. example: internal_error code: type: string description: The error code for this error. example: - internal_error - wrong_credentials - not_granted - live_mode_not_granted message: type: string description: The error message describing what happens to throw this error. example: An error occurred on our system. Please try again later. required: - type - code - message InternalApiUnauthorizedError: type: object properties: type: type: string description: The type of this error. example: authorization_error code: type: string description: The internal error code describing what happened. enum: - bad_payment_intent_token - wrong_credentials example: wrong_credentials message: type: string description: Detailed error message which describe what happened. example: L'ID marchand et/ou la clé d'API sont incorrects. required: - type - code - message ForbiddenErrorObject: type: object properties: statusCode: type: number description: Http status enum: - 403 example: 403 message: type: string description: Detailed error message example: Forbidden error: type: string description: Error name required: - statusCode - message - error ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.