Get your taxes done using TurboTax

@cjmarkie 

IRS requires details for all sell transactions, whether or not you got a 1099-B.

IRS requires details to be listed on a Form 8949,
or on your other forms (e.g. consolidated 1099-B) which have the same information and in the same manner as Form 8949.
Either way, if you choose to summarize, you have to mail the transaction details to the IRS within three business days of IRS accepting your e-Filed tax return.(unless you have attached a PDF of the transactions details to your e-Filed return. TurboTax seems to be adding this feature now).
Exception: if you summarize Category A or Category D, Form 8949 is not needed for transactions without adjustments. No mailing is necessary.
If you don't have a 1099-B , for instance from crypto, your sales category is C or F.

There is no exception for these categories.