i believe that value of cryptocurrencies are determined not just coin investors
but its offline usefulness is also make its value.
of course Bitcoin is a giant cryptocurrency, so its value could be determined by D-S theory
but others are not.
there are some cryptocurrencies that have been tried to make its value uprising by using offline services
like vertcoin, Friendscoin, Educare.
For instance, friendscoin has its background in social contribution and educare also do same.
anyone have more cryptocurrencies like them?