Peercoin: Like Nxt, Peercoin (abbreviated PPC) uses a proof-of-stake system; in fact, it was the first proof-of-stake coin. It’s worth about $0.40 on the USD and has a market cap of almost ten million. This coin has everything going for it and might be a smart bet as far as cryptocurrency goes. As an bonus to the confidence and quality of the coin, Peercoin was developed by Sunny King. Sunny King is, or might be, the person who created Bitcoin or another coin, or maybe Bruce Wayne or Clark Kent. It’s hard to tell as the culture of cryptocurrency puts importance on peer-to-peer, code, and coin over developers. Still, he is important, and like-it-or-not little things like this could be the deciding factor in whether a coin sinks or swims in the new market. Peercoin has a story like Nxt and Namecoin where they are long-running coins.
In February 2014, Mt. Gox, the largest cryptocurrency exchange at the time, suspended trading, closed its website and exchange service, and filed for bankruptcy protection in Japan from creditors.[16][17] In April 2014, the company began liquidation proceedings.[18] This was the result of a large theft of Bitcoins that were stolen straight out of the Mt. Gox hot wallet over time, beginning in late 2011.[19][20]

^ Iansiti, Marco; Lakhani, Karim R. (January 2017). "The Truth About Blockchain". Harvard Business Review. Harvard University. Archived from the original on 18 January 2017. Retrieved 17 January 2017. The technology at the heart of bitcoin and other virtual currencies, blockchain is an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way.
In 1983, the American cryptographer David Chaum conceived an anonymous cryptographic electronic money called ecash.[7][8] Later, in 1995, he implemented it through Digicash,[9] an early form of cryptographic electronic payments which required user software in order to withdraw notes from a bank and designate specific encrypted keys before it can be sent to a recipient. This allowed the digital currency to be untraceable by the issuing bank, the government, or any third party.