This document discusses ORCID, which provides researchers with a unique identifier to help connect their work and activities over their career. ORCID aims to disambiguate authors' names, provide persistent identifiers, minimize repetitive data entry, and ensure works are discoverable. It does this by integrating ORCID IDs into research workflows and systems used by organizations like universities, publishers, and funders. Over 812,000 IDs have been issued internationally across many disciplines and sectors.