If you had the beta you would know. Especially since you would have signed a legally binding NDA. There are also numerous visible differences between the beta and general public releases. TeslaScope was tracking the beta versions for a while but last I checked they removed them. Possibly at request of Tesla? The beta versions keep changing. There has been several now. Something like 6 or 8 so far I think? EDIT: Tesla Software Updates actually lists all the beta versions. https://www.notateslaapp.com/software-updates/major-releases/ (Just search for "Full Self-Driving (Beta)")