Yes, sale of crypto is considered an Investment sale of 'other property' (meaning not stocks, bonds, mutual funds, etc.).
You could enter your address as Oklahoma location (since it was sold by you personally and you are not a corporation, partnership or LLC).
However, this tax break for OK Capital Gains only applies to personal property if it was owned five years prior to the sale, so it may not apply to you, plus crypto would not be considered 'tangible personal property'.
In that case, in the Oklahoma interview there is a page after Adjustments to Federal Income to list "how much of the gain (or loss) was from the sale of qualifying Oklahoma property?" Then you list Oklahoma Income as $0.
Here's more info on Oklahoma Form 561 (page 3).
@T_lopez
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