Hi all,

Since I'm newbie I need to create several posts on this forum, so here is mine)
I've noticed that all known (to me) cryptocurrencies are strore full transaction history for every available "coin". So, is to store this history really necessary? A simple alt. way may be just to store current balances of every user. Actually it even seems to enough to strore one-way accumulator hash of all balances and send required for every node hash update when new block is generated.