Ledger Assets Unveils Proof-of-Stake Permissioned BlockchainMost people associate the blockchain with using tons of computational power and electricity to secure it. After all, that is how things work in Bitcoin, which has the most popular blockchain of them all right now. At the same time, these computation and electrical resources secure the network in such a way it cannot be broken by hackers, governments, or even supercomputers...
http://www.newsbtc.com/2016/08/17/ledger-assets-unveils-proof-stake-permissioned-blockchain/