Aside from the blockchain apps you mentioned such a social media and messaging apps, the technology could also provide the framework for a whole new financial infrastructure that would enable simpler, easier and more secure payments and exchanges. Was doing research about altcoins and came across Virie. More than just a new digital currency, it features a virtual marketplace a blockchain based distributed exchange network that allows for secure contracts without the need for any third-party services. This could totally change how transact and do ecommerce all thanks for blockchain tech.
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Virie seems to have been catching my attention lately. A friend told me about it then I started doing some research. There's not much about it in Google yet but I've seen it mentioned in some social media sites. I will do some more research about it as it does sound interesting for its total independence plus I think it will be the currency for a project called Virternity which aims to develop a Virtual World in the future. Now that's interesting alright.