As digital technology over open networks evolves, commercialization of video streams is coming of age. Traditional models for video stream commercialization suffer from copyright infringement as digital technologies allow for easy and low cost reproduction of digital content. Models for the commercialization of video streams that preserve copyrights and scale well to a large number of users would allow deployment of new services. In this paper we present a new scalable model for video stream broadcasting over open networks that preserves and enforces copyright protection.