The easy profits from pleasure, addiction and misery may soon end. The global drugs, nicotine and alcohol industries are ripe to be radically disrupted by the Internet, AI and blockchains.Narcotech is the simple concept that smart receipts can shrink today's troublesome black markets. Data-empowered citizens can transform their own health, whilst reducing the power of crime.There is neutral ground to be found in the culture wars between drug prohibitionists and liberalisers, hedonists and the nanny state.Change won't be immediate, even or universal, but the prospective benefits are enormous. Lives saved and extended, new jobs and services created, civil liberties improved, taxes collected, and environments respected. These are just a taster of what is possible.