Are we talking about being 100% on the up and up? If we're ever profiting from buying/selling a car or motorcycle, surely we don't report it..? I wouldn't. But, I thought you were talking about receiving bitcoin and not money? If we're talking about money, we don't all report every penny we've ever received, so we're really talking about money the irs knows about. If you receive money that someone else is reporting as going to you, then of course you'd better report it.
