''Despite exceptionally rapid growth and burst of popularity over the past decade, the crypto industry is a mere teenager and there are a spectrum of risks investors and practitioners encounter on a daily basis. The industry has been expanding so rapidly and wildly that few had the expertise and patience to sit down and thoroughly review and study the nature of each source of risk in depth.This book is the very first of its kind in offering readers a thorough look at managing crypto risks with a scientific and quantitative approach. Readers will be taken through various machine learning techniques that perform well in modeling probability of default for a digital currency. For the first time, computer codes will be directly displayed, explained, and executed throughout our discussions and results of model execution will be shared and analysed in details.Again for the very first time and with proud, a crypto derivatives product called coin default swap will be introduced by the Author of the book and his Astron Lab team behind him. The product was designed, developed, and deployed in the form of Ethereum smart contracts written in Solidity, the compute codes of which will be shared and discussed, line by line, in ones of the chapters.Furthermore, the contents of the book are suited for any crypto practitioner such as a risk manager, a decision maker, an individual crypto investor, and/or anyone interested in understanding crypto risks, and do not necessarily require programming experience or a technical background. Those who have not programmed a single line of code will be able to understand most contents intuitively without obstacles.Finally, the author of the book and his Astron Lab released the contents book in genuine hope that the cryptocurrency industry can be better understood, invested in, educated, and regulated for its own sake, and that the book can serve as a tool in the box to help investors and practitioners become well-equipped and well-prepared in fa