# Documentation

## Retrieving DOI info-metadata

Crossref-specific information about a DOI may be retrieved by including the appropriate parameters in the following URL:

https://doi-crossref-org.turing.library.northwestern.edu/search/doi?pid=email&format=info&doi=doi


This data is distinct from item metadata deposited for each DOI, and includes information such as timestamp, owner prefix, and primary/alias status.