In the U.S. state of Nevada, a cryptocurrency businessman hopes to turn dreams of a futuristic “smart city” into reality. To do that, he is asking the state to let companies like his form local governments on land that they own. This would give them power over everything from schools to law enforcement. Jeffrey Berns is head of Nevada-based Blockchains LLC. His “smart city” would permit people to buy goods and services with digital money. But it would also record all of a person’s blockchain activities, including financial statements, medical history and other private information. Blockchain is a digital record-keeper known mostly for recording cryptocurrency usage. But it has also been used by some local governments for everything from recording marriage documents to aiding elections. Blockchains LLC wants to begin its process by 2022 in rural Storey County. It is proposing to build 15,000 homes and 3 million square meters of business and industrial space within 75 years.