Blockchain solutions appear to promise resolution to long-term supply chain challenges such as end-to-end visibility, transparency, and intelligent fulfillment. Traditional supply chains achieve scalable, consistent transparency because supply chain "captains" decide the data exchange standards for subordinate levels in the chain. But the digital economy's more democratic supply networks don't have captains to dictate standards. This report helps digital business professionals assess the opportunities and risks associated with blockchain in supply chain and fulfillment.