When you play your beloved Video Games on your PC, you already know about all the procedures during the Installation by entering a Key, which allows you to install and/or to play the Games, you recently bought. And when this is a "everyday's business" by a PC Gamer and nothing new, Game Titles released on a home console never applied such a system, which meant that if you bought a Game, you was able to do whatever you wanted to do. But this could change in future, according to a new Patent filled by Sony, which would not based - as they call it: "BLOCKCHAIN-BASED DIGITAL RIGHTS MANAGEMENT" - on a traditional system, as above mentioned. There are many speculations how this system could work and it's still unknown if this would mean a better protection against Piracy or having full control about your purchases.