by Zozan Cudi (@ZozanCudi)
Cryptocurrencies existed for ages but all had the same issue that is common in the world of information technology: the double-spending problem. Bitcoin, introduced in 2009, solved this issue thanks to the block chain technology.
The block chain is a massive distributed data base all over the bitcoin protocol which can do so much more. Indeed, the two first applications of bitcoin which are the decentralized currency and the peer-to-peer payment network are just the tip of the iceberg for all the possibilities bitcoin can deliver.
Distributed blackmarkets can be built on top of this block…