Somewhere in the middle of the Pacific Ocean is a tiny tropical group of islands called The Yap Islands. They’ve been inhabited by a native tribe since ancient times, and this remote community provides us with an interesting episode in the history of money: they used money made from limestone, i.e. they paid each other in stone money for centuries.
Bitcoin’s technology is a revolutionary invention because previously the reliable operation of a virtual monetary system without a central institution couldn’t be guaranteed. Bitcoin has proved over the last eight years that this is possible. Despite its innovation, however, it has a number of weak points.
One of the most interesting innovations of the past years has been the creation of the “world computer”, the Ethereum, which enables the signing of smart contracts. By further developing bitcoin’s technology, it creates a virtual interface on which participants who want to do business with each other can enter into contracts. The contracts are then implemented automatically; there are no options for subsequent tricks or manipulation.