How can I make sure my car doesn't get impounded/ticketed before the 72h parking deadline in Seattle, or at least, prove it wasn't parked over 72h? [closed]

I'm reading that there exists a dedicated phone line, 206-684-8763, to report to the Seattle Police vehicles parked in one spot for over 72 hours. How can I make sure that my car doesn't get impounded or ticketed before the 72-hour parking deadline in Seattle, e.g. because of an overzealous citizen or a bored neighbor? E.g., how can I prove, if needs be, that the vehicle wasn't parked for more than 72 hours at the same spot?