You do not have to "prove" your extension to TurboTax. There is no place to indicate on the tax form that you have an extension. The IRS knows, though. So file normally, and just make sure to indicate the payment you made when you requested the extension, as VolvoGirl instructed you to.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
