Yes, Turnitin originality check is now an option for any Canvas File Upload assignment. Instructors can use all of the Canvas File Upload features in the assignment, including rubrics, group assignments, and peer review. Instructors can view Turnitin scores and reports from the Canvas gradebook or from SpeedGrader. Students can view their reports and assignment scores from their Grades page in Canvas.

Read the article Use Turnitin (plagiarism checking) on a Canvas Assignment on oregonstate.teamdynamix.com