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A comment on MS: Bitcoin mining uses as much electricity as 1M US homes. Parent comment

Re:MS: Bitcoin mining uses as much electricity as 1M US homes by mdpopescu on Tuesday August 22, 2017 @02:46AM (#15070264)
> Expensive to calculate, cheap to validate

Sounds like NP-completeness [1]

[1] https://en.wikipedia.org/wiki/NP-completeness

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