The Bitcoin Core mining can remain profitable using up to at least 24 TWh
annually. That said, as the periodic halvings reduce awards the fees, which
are already to high to make it useful for commerce, may soon make it
problematic for investment.
Bitcoin Cash is up to 8 times more energy efficient and Bitcoin Unlimited
blockchains could be >> efficient yet.
On Dec 7, 2017 12:05 PM, "g2s"