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 "text": "Proof of work mining carries significant externalities: the authors estimate that the total energy cost of running the global network of computers solving proof of work puzzles was around 700 million US dollars per year before publication.",
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 "citation": "Wulf A. Kaal, Craig Calcaterra, Crypto Transaction Dispute Resolution (2017). SSRN: https://ssrn.com/abstract=2992962",
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