Random code generator for audit purposes

Hey everyone! Hoping someone can point me in the right direction. I’d like to set something up where each page on my knowledge-base site generates a random code at the bottom of the page. I’ve found a few plugins that would work, but I’m running into a problem. I need an audit trail on these codes. I’d like to be able to see the codes generated and what url they were generated at.

What we’re trying to do is create an audit process for employees following our internal SOPs. Our thought was to have them paste the code into their call notes to verify that the web based SOP was viewed. Any idea on something that would work for the code generation and give us that kind of data on the back end?

Thanks in advance for your help!