my friend just gave me few mp3 & .drg i-doser files to try some digital drugs & it looks original to me

but still i wanna know, is there any way to identify the difference between real i-doser dose files & Fake i-doser dose files ...
btw i'm new to i-doser and i'm first time using i-doser, but i know how binaural beats works & i have tried binaural beats (pure) with 100% effective feeling
Note: my friend didn't tell me
from where he got those .drg & mp3 thats why i'm asking here