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This whole discussion seems to revolve around "Who will be the central authority, the permanent and unwaivering center of trust?". Really a good time to bring blockchain into the discussion, as this is actually something it's kind of designed to handle.

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That's a tool, it still leaves open the question "Who will be the authority to determine what changes to allow to the blockchain?", the problem was not solved by introducing blockchain, you just changed the question slightly whilst adding a dependency that wasn't required originally.

Moreover proof of work can't work for non-currency use cases because it requires an incentive structure for the game theoretics to work.

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