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Re:Call for Code – Developer competition that seeks solution... by roro159 on Thursday May 09, 2019 @11:44AM (#19869269)
Blockchain != PoW. There are plenty of blockchains without the problems you described (like IBM's Hyperledger).
Re:Call for Code – Developer competition that seeks solution... by dillonmckay on Thursday May 09, 2019 @12:14PM (#19869565)
Also blockchain != distributed.