Sony Tries Using Blockchain Tech For Next-Gen DRM (engadget.com)

Sony announced Monday that it's using blockchain technology for digital rights management (DRM), "starting with written educational materials under the Sony Global Education arm of the business," reports Engadget. "This new blockchain system is built on Sony's pre-existing DRM tools, which keep track of the distribution of copyrighted materials, but will have advantages that come with blockchain's inherent security." From the report: Because of the nature of blockchain, which tracks digital transactions in records that are particularly difficult to forge or otherwise tamper with, its application as a DRM tool makes sense and may also help creators keep tabs on their content. Currently, it's up to creators themselves (or the companies they create for) to monitor their contents' rights management. Sony's system could take over the heavy lifting of DRM. The way blockchain works allows Sony to track its content from creation through sharing. This means that users of the blockchain DRM tool will be able to see -- and verify -- who created a piece of work and when. Sony Global Education is the current focus of the DRM tool, but going forward, the company hints that the rest of its media -- including entertainment like music, movies, and virtual reality content -- may be protected the same way.

Comments

What value added?

[arth1]

I fail to see what value a blockchain adds here over, say, signed certificates. Can someone explain the added value to either content creator, copyright holder or consumer that requires blockchain?

Re:What value added?

[Sarten-X]

My guess (and it is purely a guess, since TFS and TFA are so light on detail) is that transactions involving works will be logged in a blockchain. I buy a movie, and that purchase is linked to my particular account. I can then loan that movie to someone else, and the transfer gets logged. When it's returned to me, that's logged, too... Unless I happen to be disconnected from the blockchain-handling system, in which case I'd be stuck with the last-known state of property ownership.

If everything works like that, then a content owner could track their creation and see that I loaned a movie to someone... because apparently that's something Sony thinks they care about. Like many other DRM systems, it also allows Sony to revoke rights to works by authoritatively transferring them away, unless there's a crypto method to authorize a transfer (which is not indicated in TFS or TFA).

Pretty much, it provides nothing of technical value that wouldn't be served better by a central database. For marketing value, though, blockchain's an excellent choice right now.

Re:What value added?

[mysidia]

I guess the idea is media creators could create a public blockchain describing their works and every playerID or userCode license that has an authorization to disseminate their work. The description of a work could actually contain enough information about various watermarks and identifying features of their works to identify both legitimate copies and Identify decent-quality rogue copies containing an identical picture or more than 30 seconds or so of audio or video: then in order to disseminate ANY work, a compliant playing device would be required to maintain an online connection and take steps to identify what work is being played --- then in order to play a work identified as matching a protected one: the player would be required to login, userId, and apply for a player hardware Id Lease containing the player hardwareId and the manufacturer+hardware IDs of the monitor and every device in the viewing chain (May require submitting a payment); wait for a short-lived Play authorization to appear on the blockchain, and maintain an internet connection to (1) Verify every 60 seconds that the play authorization is still valid for this content, and (2) The player has to transmit all the blockchain records to the HDCP display monitor, digital sound, and every device in the chain, so.... (3) The HDCP monitor also verifies the "play authorization".

The DRM could be combined with a proprietary audo/video encoding package: which would be protected by a patent,
and in order to enforce the DRM policies -- licensing the patent to decode would require that all decoders made available
be only "Compliant players". After every 3 or 4 years, there would be a new encoding/decoding package with a new patent,
and a mandatory online instant update for Compliant Players to remain compliant and be able to continue playing content
that involves removing the hardware's capability to decode media packages that are more than 2 versions behind --
and media leases can no longer be issued for older versions of the media to ensure by the time patent expires - nothing in consumers' hands can play that format anymore.

Re:Idiots

[DarkRookie2]

Is this because of the DRM, or no one really trying since the selection of games exclusive to the console is underwhelming to say the least.
I am betting more the later than the former.