# Testing the default cloud storage bucket

Within the Sandbox, the default bucket is integrated into the Investment API by default. We can help you to get started quickly by
providing some mocked data.

You may use the following files in support of the corresponding check calls within the Investment API:

- Know your customer files
- Proof of residency files


## Check access to the bucket

For now, you can use these URLs to check that you do indeed have access to this bucket.

The links listed here are **only to be used for API calls in the Sandbox** environment.

- [Know your customer files](https://storage.cloud.google.com/upvest-mock-documents/Test_KYC_documents.zip)
- [Proof of residency files](https://storage.cloud.google.com/upvest-mock-documents/Test_PoR_InternetBill.pdf)


Please find more information in the API reference about the [User checks](/api/user-checks/list_user_checks).