Thats a pretty extreme accusation to make just from looking at white blotters.
DOC has become a rather rare drug, and isnt seen as much in the market as it use to be. That definitely makes me skeptical that its DOC.
I mean...has your friend tried them? If so, has your friend tried legit DOC before to guage whether or not he's even in the right ballpark?
May I ask why you got 2C-I on blotter? The dosage of 2C-I is rather high in terms of blotter dosages. When dosing on blotter, you're typically dosing substances that need to be dosed out in dosages 3mg's or lower. If it is 2C-I on blotter, you're probably going to have to take larger amounts of blotter to reach the same level you would have had you just takent he amount of HCl salt, as 2C-I comes in.
DOC is a psychedelic amphetamine, and you'll know you've taken if after 3 hours you start to feel the effects. That said, it could be any DOx chemical, not just DOC. 2C-I tends to come on within an hour or so.
Im very skeptical about the entire situation.
Why you received 2C-I on blotter; why your friend randomly thinks the blotter contains DOC.
It just doesnt make that much sense to me.....
I suggest cheking out the erowid vaults on both 2C-I and DOC to understand what chemicals your taking. You should not be ingesting chemicals which you know little to nothing about.
Research, then indulge.
If you did indeed receive DOC though, congrats!