Brooklyn Roasting Co. and IBM Are Letting You Track Your Coffee on the Blockchain

The pop-up is also helping explain the technology to customers

This past Saturday at Smorgasburg, an open-air market in Brooklyn, N.Y., a dozen or so people in their mid-20s and 30s queued inside a large shipping container, which had been cut in half, that served as the location for a pop-up coffee shop hosted by Brooklyn Roasting Co.