Digital Approaches to coin finds: the Coin Hoards of the Roman Empire project

CHRE (chre.ashmus.ox.ac.uk) is a joint initiative of the Ashmolean Museum and the Oxford Roman Economy Project, providing digital coverage of hoards and single gold coins of all coinages in use within and outside the Roman Empire. Our data is made available under a CC BY-NC-SA licence and all hoards come with stable permalinks. We also make use of stable digital identifiers for numismatic concepts, bibliographical references, and some geographical data. In order to assemble data (encompassing more than 17,500 hoards and single gold coins in September 2022, of which approximatively 14,000 are validated), we have created an impressive network of scientific collaborations, but we also integrate data from other digital projects. This talk focusses on practicalities of data exchange with various partners, the importance of interoperability of data, highlight the use of linked open data concepts, explain how we deal with contextual information, and show the benefits of links between online portals in order to connect interrelated information.