Ted Kosmatka has won the Asimov’s Readers’ Award twice. Asked about this latest submission, he said, “When I told my mom the premise of the story, she said not to write it. ‘Let’s build it instead!’ I’m gonna miss you forever, Mom.” “there was a way to do this without any trust required at all” —Satoshi Nakamoto He took the elevator up to the nineteenth, just like the email said. Elevator ding, white tile, and he crossed the hall through a set of glass doors. “Can I help you?” the receptionist asked from behind a curving white counter. “I have