John’s research intersects Artificial Intelligence (AI) and Distributed Ledger Technology (DLT), with focus on media provenance to fight misinformation and online harms, and on improving data integrity and attribution for responsible AI. John’s content fingerprinting research is used to protect millions of images daily across Adobe’s platforms such as Photoshop, Lightroom and generative AI Firefly tools. John has also pioneered several visual search technologies, such as style, sketch and pose based search. These technologies have been shipped in products such as Behance.net. Notably, he led the ARCHANGEL project which pioneered use of AI and Blockchain to tamper-proof National Archives around the world and was called out as a highlight of the 10 year UK Science Council (EPSRC) Digital Economy research programme. John has presented to various government bodies on provenance, authenticity and AI opt out including the European Commission, UK House of Lords and APPG Blockchain.