It may be easier to simply report these transactions in summary form and mail the detail to the IRS within 3 days of electronic filing using Form 8453.
Regarding your question about a .csv file, please see this article for more details on how to import .csv with written and video guidance. Reporting Cryptocurrency using a .csv file.
Form 8453 must be included with the additional detail.
Mail Form 8453 to:
Internal Revenue Service
Attn: Shipping and Receiving
0254 Receipt and Control Branch
Austin, TX 73344-0254
For state details that are required to be submitted, it would depend on your particular state. To contact your state's Department of Revenue, click this resource for Sate Department of Revenue Resources.
