Get your taxes done using TurboTax

I'd guess you didn't get a 1099-B for those trades.

Use the "Stocks, Mutual Funds, Bonds, Other" interview telling TurboTax that no 1099-B was received.
Use the "Everything else" investment type.
Make sure your list reports the same information that a Form 8949 would report, separated between long term and short term holdings, with dollar subtotals for each term:

1. What was sold
2. Date of sale
3. Proceeds of sale
4. Cost basis
5. Date of acquisition

On the page "Some Basis Info About This Sale" enter "Summary of ST Crypto Currency Trades " or "Summary of LT Crypto Currency Trades" depending which group you're working on. Enter the total dollar amount of proceeds for each group as appropriate and you can use 12/31/2017 for date of sale.

On the "Tell Us How Your Acquired This Property" page tick "Purchased".
On the "Enter Purchase Information" page enter the summary cost and the word "various" in the Date of Purchase box.
On the "When Was This Investment Acquired" page you'll answer "Yes" for the long term trades and "No" for the short term trades.

If you're mailing in your income tax returns you can include your manipulated substitute for a Form 8949 as part of your filing though I'd add "See Schedule" to your descriptions of what was sold.

If you are e-filing your tax return, then mail your statements along with Form 8453 to:

 Internal Revenue Service
 Attn: Shipping and Receiving, 0254
 Receipt and Control Branch
 Austin, TX 73344-0254