Chris Burniske, who built ARK Invest's cryptocurrency research practice, and venture investor Jack Tatar wrote this guide in 2017 as the first serious attempt to apply established investment analysis frameworks to the nascent cryptoasset class. The book is notable for introducing a taxonomy of cryptoassets — distinguishing between cryptocurrencies (like Bitcoin), cryptotokens (like Ethereum-based utility tokens), and cryptocommodities — that has influenced how the industry talks about the space ever since. Burniske and Tatar apply traditional portfolio theory to the question of how much exposure investors should consider in cryptoassets, drawing on the historical correlation data available at the time to argue that a small allocation could improve portfolio efficiency through diversification. They also introduce an adaptation of the equation of exchange (MV = PQ) as a valuation framework for utility tokens, providing a theoretical basis for estimating token value based on the size of the network they facilitate — an approach that remains controversial but influential. The book covers the mechanics of buying, storing, and securing cryptoassets in detail that was particularly valuable for non-technical investors entering the space for the first time. While some specific recommendations and predictions have not aged well given the extraordinary market developments since publication, the analytical framework and taxonomy remain useful reference points for serious investors approaching the cryptoasset space.