What is Nxt?
Nxt was launched November 24th 2013 by an anonymous developer " BCNext ", using " proof of stake " to agree on transactions.
Nxt had no initial mining period, infact it's not possible to mine Nxt, instead there is a static supply of coins and works more like Ethereum with shares / contracts. New currencies can even be created inside the Nxt blockchain and have added Multisignature ( also called Multisig ) in a past update, which adds more security by requiring more people to sign as a form of party contract, great for crowdfunding and other public services.