One of the technologies being developed to address copyright issues (among others) in the AI context is attribution – digital “paper trails” that establish the human or non-human authorship of content. Many of the technologies for establishing attribution, such as digital watermarking and online content identifiers, have existed since the 1990s and have been used in specific applications for infringement detection and rights administration. But the need to establish robust attribution trails takes on new levels of meaning in the age of AI; and the emphasis today is on standardization and interoperability of the myriad technologies, chiefly through the Coalition for Content Provenance and Authenticity (C2PA). These were discussed on this panel.