How can I get my dive instructor/dive guide to verify my dive log?

First you need to add your instructor as a buddy on Deepblu.

You can let your instructor or dive guide verify your dive log when you are creating or editing a dive log. On the edit screen, tap the Add Buddies button at the bottom of the screen.

Select the Verification tab. This will show all of your buddies that are Deepblu-verified Divemasters, Instructors or higher. Pick the one you wish to verify your log. Tap Done in the top right-hand corner of the screen.

Your instructor will receive a notification to verify your log. If they accept your request, you will receive a notification. You can now check the details of your dive log by pressing the Book icon in the top right corner. Verified logs will show a verification banner.