Indeed they have https://en.bitcoin.it/wiki/FAQ#Why_don.27t_we_use_calculations_that_are_also_useful_for_some_other_purpose.3F https://en.bitcoin.it/wiki/FAQ#Wh

Indeed they have https://en.bitcoin.it/wiki/FAQ#Why_don.27t_we_use_calculations_that_are_also_useful_for_some_other_purpose.3F https://en.bitcoin.it/wiki/FAQ#Why_don.27t_we_use_calculatio...