To show the originality report to the students, the assignment must be unmuted from the gradebook. If the originality report should be visible to the students immediately following their submission or after the due date, we recommend that you unmute the assignment temporarily before you begin marking.
In Canvas, there are different options in anonymising assignments and feedback. To mark assignments in Canvas without identifying who submitted them, enable the option to Hide Student Names in Speedgrader. This is applied as a view-only, per-assignment basis.