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RE: Why energy-sapping bitcoin mining is here to stay
The article incorrectly implies that GridCoin is not secure because it is only secured by PoS. In fact, it is secured by both PoR (Proof of Research, which is similar to Proof of (useless) Work (PoW)) and PoS. So, GridCoin is in fact quite secure. Author, please inform yourself at the source: http://gridcoin.us