(1) The document discusses measuring the success of ORCID, which aims to uniquely identify researchers and link them to their professional activities. (2) Broad success is defined as researchers being uniquely identified by ORCID IDs, reliably linked to their research, and happy with the ORCID service. (3) In the short term, success will be measured by the number of researchers registering and using ORCID IDs, institutions registering researchers, and other organizations integrating ORCID IDs.