That isnt fool proof as you can link to any profile link, unless you can use that 'persona' to communicate a message to the tracker, thereby confirming then that would be considered a much more secure way of preventing "lying" as u put it.
With some trackers they can be set to block 3rd party access to stats in the profile but not name, but u can always give out any profile cant u?
With a proof u can still fake it even with a fake name, easy as sh1t
The 2 are usually used to confirm the existance and activity of the applicant to some degree