John Steven Hughes is a Principal Computer Scientist at the Jet Propulsion Laboratory and has worked on NASA’s Planetary Data System since its inception in roles ranging from project engineer to chief architect of the PDS4 Information Model. Other tasks at JPL include information model architect for the JPL Enterprise 2.0 project and editor of the Open Archival Information System (OAIS) Interoperability Framework CCSDS Blue Book. He is also ISO certified to audit and certify trustworthy digital repositories under ISO 16363:2012 and is a co-author of the OAIS Reference Model - ISO 14721:2012. He was awarded the NASA Exceptional Public Service Medal for exceptional service to NASA science missions and data archives, architecting and implementing data intensive systems, information models, and ontologies for three decades.