A line of demarcation has been forming in the world of cryptocurrency. On one side, speculators and gamblers play the markets only for profit. The tone of their social media posts fluctuates, jubilant when prices soar and fearful when they fall. On the other side is a group of technologists, entrepreneurs, and pragmatic believers. They recognize that while a financial renaissance may be within reach, it won’t be achieved without a sustained and collective effort for years to come. The second group is the one that showed up in droves this weekend.