A newly published patent suggests Sony Interactive Entertainment has been actively exploring the use of NFTs and blockchain technology in games. Originally filed last year and published this month, the Sony patent (via Gamesual) is titled ‘Tracking Unique In-Game Digital Assets Using Tokens on a Distributed Ledger’. It covers a system which could be used to track the creation of, use, modification, and transfer of digital assets created within a game, and/or assets created based on gameplay of a video game. Sony said the systems and technologies described in its patent application could be used to track the lifecycle of digital assets across different hardware platforms, including those “of a different albeit inferior manufacturer”, and across titles from various publishers.