The amount of energy required to "mine" one dollar's worth of bitcoin is more than twice that required to mine the same value of copper, gold, or platinum, according to a new paper, suggesting that the virtual work that underpins bitcoin, ethereum, and similar projects is more similar to real mining than anyone intended.
One dollar's worth of bitcoin takes about 17 megajoules of energy to mine, according to researchers from the Oak Ridge Institute in Cincinnati, Ohio, compared with four, five, and seven megajoules for copper, gold, and platinum.
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