International Association for Cryptologic Research
Bitcoin has emerged as the most successful cryptographic currency in history. Within two years of its quiet launch in 2009; Bitcoin grew to comprise billions of dollars of economic value despite only cursory analysis of the system's design. Since then a growing literature has identified hidden-but-important properties of the system, discovered attacks, proposed promising alternatives and singled out difficult future challenges. Meanwhile a large and vibrant open-source community has proposed and deployed numerous modifications and extensions.