Does the sport have a serial number I am just not seeing? Usually its on the bottom but all I see is the numbers on the cranks. Does anyone know if all those numbers are the same? Im trying to register my bike if god forbid someone tries to steal this. Everywhere i go people want to stop and talk and ask the same questions how much how fast where to buy w.e but i notice with some almost like a greed jealous type thing so just trying to protect myself.