From the Document: "Blockchain technology is being looked on to deliver a framework that can be used by stakeholders in the commercial drone industry, as it can ensure security and provide for identity management as well as providing a supporting role in aircraft traffic management, UAS [unmanned aircraft system] conflict management, and flight authorization. Blockchain has already been used to address some UAS trust and integrity issues. Flight data recorders (also known as black boxes) can provide data that could help investigators learn what a UAS was doing prior to some event or incident. A blockchain-based flight recorder would do so in real time and could also allow law enforcement to be proactive instead of reactive. One company has proposed a blockchain-based black-box UAS system that would enable industry regulators to track and review drone flight data, insurance companies to insure drones based on reliable third-party data, and pilots to ensure compliance with regulators."
National Transportation Library: https://rosap.ntl.bts.gov/