Sony develops new DRM technology based on the blockchain

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Sony is testing a new method of Digital Rights Management (DRM) based on blockchain technology. The same technology that powers cryptocurrencies like Bitcoin and Ethereum. Initially the blockchain-DRM is tested on educational content from Sony’s Global Education division. For as now the content only consists of written material.

I’m not quite understanding how this DRM scheme works. To me, it sounds like Sony uses it’s customers’ computers to spy on other customers. That is to say, it sounds like the customers’ computers for the blockchain, and that each user’s computer reports to every other users’ blockchain. If so, that sounds stupid.