EghtesadOnline: In late February about 200 executives, coders, and developers gathered in the downtown Brooklyn office of JPMorgan Chase & Co. to hear an all-day pitch for a new industry group called the Enterprise Ethereum Alliance. Ethereum ? It’s the ghostly sounding name for a so-called blockchain technology similar to the one that made the digital currency bitcoin possible.

EghtesadOnline: Marco Streng’s computer servers are what make Ethereum tick. Thousands strong, they whir day and night, solving the complex math riddles that are essential to verifying transactions on the hottest new platform in the world of cryptocurrencies and blockchains. Without these machines, or those deployed by Streng’s biggest rivals, there would be no Ethereum .