What is a DOI? A Digital Object Identifier (DOI) is a unique alphanumeric string assigned to a digital object, such as a journal article, research paper, book, or dataset. The DOI provides a permanent link to the object's location on the internet, making it easier to find and access. How does the DOI system work? Assignment: When a digital object is published, a DOI is assigned to it by a registered organization (usually a publisher or data center) through a DOI registration agency (e.g., CrossRef, DataCite). Resolution: The DOI is registered in a central directory maintained by the International DOI Foundation (IDF). This directory maps the DOI to the current URL of the digital object. Access: When a DOI is clicked or e Read More