Figure out any DOIs not registered on ADC

[taojing2002]

Maybe running a simple bash script in a lop over all of our DOIs would tell us if any more are not registered (if they return a 404) so we can proactively fix them if a landing page exists? We'd need to be careful to not publicly register the private datasets that are still in curation, but they shouldn't have DOI landing pages yet, so that should be ok. Maybe coordinate with @Justin Kadi and @Maggie Klope?

❯ curl -I -H "Accept: application/json" https://doi.org/10.18739/A2HM52M8P
HTTP/2 404