An ORCID is a persistent, unique digital identifier for researchers. It supports automated linkages between you and your professional activities (funding, publications, etc).
ORCID is a non-profit, and registering for an ORCID is free for individuals. The organization is supported by member subscriptions.
More @ libguides.wustl.edu/orcid
A digital object identifier (DOI) is a unique identifier associated with an object, such as an electronic document.
Washington University assigns DOIs to all electronic theses and dissertations. When adding a link to your thesis or dissertation or other publication with a DOI, consider using the DOI link. If the URL of the electronic document changes, the DOI will redirect to the new URL. No dead links!
More @ libguides.wustl.edu/doi