Blockchains are the most transparent and remarkably decentralized way of recording list of transactions.  Hundreds of decentralized kind of currencies have been created each year with different features and purposes.

Blockchain-based currency transactions are fast and most importantly secure where public records mean it is more transparent and private as well.

Bettina Warburg  –  the graduate of Georgetown and  Oxford, is a blockchain researcher and in her TED appearance, she talks whether blockchain is capable to radically transform the economy.