PeercoinWe can spot Peercoin as the turning point from the proof-of-work to the proof-of-stake blockchain and might find it very interesting or even awkward based on the knowledge of current blockchain architecture because it is basically 90% bitcoin mixed with a pinch of coin staking. It seems that PeerCoin’s architecture failed to be included in the mainstream but still, it is meaningful to have a look at its idea as a kind of symbolic project. Peercoin blockchain has its unique hybrid arch...