If you need decentralized money, you need a decentralize ledger that no entity controls. That ledger needs some way to make a hostile takeover unfeasible. By re

If you need decentralized money, you need a decentralize ledger that no entity controls. That ledger needs some way to make a hostile takeover unfeasible. By requiring the ledger to work by the PoW scheme means you need to invest enough to have the majority of hashrate, to control it. If you can solve the distributed ledge problem, without PoW, and somehow prevent the majority of wealth to control it, you've got it. So far, it seems that the bitcoin blockchain is the best answer so far if we can accept the massive power requirement.