IPTC - unique alphanumeric and random code

Hello, I am looking for a solution so that a unique code not responding to a logical series, therefore random, is added to the IPTC data of each photo imported into lightroom. The idea is to create an identification code that makes each photo unique and does not allow you to find the next photo by changing a number. Once this unique code has been created, I would like it to be added to an area of the photo in the print module, a bit like the copyright. Do you know an extension that allows you to do this or a developer to do this?
Thank you