Coinbase and missing cost basis for several USDC sells

[Patti Kakes]

Hello,

I have imported by CVS file and all items populated in the form.  However, there are 7 blank areas under the cost basis (USD) column.  What do I put for those?  

Thank you!

Patti Kakes

[Vanessa A]

Are the cost basis available on the website of coinbase?

If  not, then if you have any type of purchase records to show the cost basis you would enter that. 

Basically, you will enter whatever you paid for them as the cost basis.