We live in the world of transformations, which affects every aspect of what we do, therefore also on the way we spend money. Cryptocurrencies are becoming a global phenomenon. Usually people confront with the conept of cryptocurrencies through the media, especially with Bitcoin as the first cryptocurrency in the history. Although there were other digital forms of currencies before Bitcoin, Bitcoin is the first digital form of money that uses cryptographic algorithms (a final set of purposeful instructions that leads to solution through numoreous iterations ) for money transfers (eg. the process of creating a bitcoin adress). When people talk about cryptocurrencies, the talk is usually of an economic nature – surprised by its value in another currency. Some of the less mentioned cryptocurrencies, which are called Altcoins, are: Litecoin, Dogecoin, Namecoin and Peercoin. What is less known about cryptocurrencies is the origin of the idea behind cryptocurrencies and how the technology behind them operates. Therefore, the vision of financial decentralization and the way Blockchain technology functions will be explained further in this paper, based on the Bitcoin technology structure.