> Because it is currency itself that you measure everything else against. So what? I cannot see the significance of that. There are many possible measures of v

> Because it is currency itself that you measure everything else against. So what? I cannot see the significance of that. There are many possible measures of value. > if you undid all transactions then nothing is left -- but with transaction fees their sum is a negative number. But you need to measure this in something. Yes? So what's the important difference between cryptocurrencies and traditional currencies?