Bitstamp data is supported via API or CSV import.
To connect an API, please follow these steps:
Open the Bitstamp API page by navigating to your account page and selecting API Access under the Security section.
Click New API Key and enable permissions for only account balance and user transactions.
Click Generate Key.
Click Activate.
Confirm the API key via the verification email.
Copy your API key and secret and your Bitstamp user ID to the appropriate fields on the TokenTax Imports page.
If you would rather import your Bitstamp data via CSV, please follow these steps to generate a CSV file of your transaction history:
Click your user icon and select Activity
Select Transaction History (https://www.bitstamp.net/account/transactions/).
Click Open Export Options.
Click Export All.
Upload your CSV file to the TokenTax Imports page.