The Wyoming blockchain movement, one of the winningest advocacy efforts of its kind in the United States, started with an act of charity. In the summer of 2017, Caitlin Long, a lanky, self-effacing former managing director at Morgan Stanley, wanted to endow a scholarship for female engineers at her alma mater, the University of Wyoming. She had donated before, but this time was different: She wanted to make her contribution not in cash but bitcoin.