Jeffrey Berns, right, surveys part of the 67,000-acre desert site where he envisions building a community based on blockchain technology, east of Reno in Storey County, Nev., Oct. 23, 2018. Berns, who made a fortune in cryptocurrency investments, has thus far spent some $300 million on the land, offices, planning and a staff of 70. (Jason Henry/The New York Times)