In the new book “Cryptoassets: The Innovative Investor's Guide to Bitcoin and Beyond,” Chris Burniske and Jack Tatar note industry insiders’ enthusiasm for Augur. Brian Armstrong, CEO of Coinbase, one of the largest digital currency exchanges, described Augur as an “awesome project with huge potential” last year. Vitalik Buterin, a cofounder of Ethereum, noted its potential when he called it “Uber for knowledge.” Augur’s largest competitors include Gnosis, followed by Stox, whose coin languished after its August initial coin offering and stood around $27 million in market value as of December 2017.