A digital object identifier (DOI) is a unique string of numbers and letters assigned to a digital object that is a persisten, permanent web address, which makes the object finable and accessible regardless of where it's hosted.
"ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers ... " Learn more about ORCid and create your unique identifier. See also the Research Guide providing more information at: https://libguides.wustl.edu/orcid