The rapid advancement in encryption and network computing gave birth to new tools and products that have influenced the local and global economy alike. One recent and notable example is the emergence of virtual currencies, also known as cryptocurrencies or digital currencies. Virtual currencies, such as Bitcoin, introduced a fundamental transformation that affected the way goods, services, and assets are exchanged. Virtual currencies are experiencing an increasing popularity in the financial markets and in portfolio management as can be classified as financial asset or commodities on a scale from pure medium of exchange advantages to pure store of value advantages. As a result of its distributed ledgers based on blockchain, cryptocurrencies offer some unique advantages to the economy, investors, and consumers, but also pose considerable risks to users and challenges for regulators when fitting the new technology into the old legal framework. Bitcoin for example may be useful in risk management and ideal for risk-averse investors in anticipation of negative shocks to the market. The core objective of this proposed book is to provide a comprehensive discussion on the important issues related to cryptocurrencies ranging from pricing, financial, legal to technological aspects.