One way to tell if the cartridge is any different from the 1.0 version of OOT is to activate the crash debugger. Once you activate the crash debugger you can take a look at the build date of the game at the last page of the debugger. The build date of OOT 1.0 is 98-10-21 04:56:31. If the build date is any different then either it's a different version of Ocarina of Time. Information on how to activate the crash debugger can be found here.