Re:Bitcoin has computed 2^83.9 hashes
by mrb on Tuesday January 26, 2016 @06:52PM
(#10977186)
It's the latter (0.74% of today's total usage, therefore 0.37% if the world's energy usage doubles).
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That's the answer I was hoping for :-) Thanks!
Additionally, can only improve with increasing processor efficiencies over time too (unless this is also predicted for in the model) - though saying that increasing processing power is accounted for in Bitcoin itself, with the work getting progressively harder, so this may be moot