Too bad there's not something like DOI or ARK [0] available for anyone to use to give documents a searchable, permanent ID so that a location can be maintained. IME, the half-life of many URLs (5-10 years?) makes them unreliable. I recently was unable to find (by URL) an entire historical collection at a major southern US university until I discovered that it had been moved to a new server.
> the half-life of many URLs (5-10 years?) makes them unreliable.
"Simple" enough experiment, on this very site: Use the "past" feature on the main menu to go back a step at a time, and tally the number of broken links from the external submissions the further you go back.-
The amount of dead projects, expired domains, broken links, 404s, etc. is sad.-
[0] https://arks.org/about/