“We’re excited to introduce DOCI, the OpenCitations Index of Datacite open DOI-to-DOI citations, a new tool containing citations derived from publications bearing DataCite DOIs to other DOI-identified publications, harvested from DataCite. The citations available in DOCI are treated as first-class data entities, with accompanying properties including the citations timespan, modelled according to the OpenCitations Data Model. 

Currently, DOCI’s December 2022 release contains 169,822,752 citations from 1,753,860  bibliographic resources, and is based on the last dump of DataCite dated 22 October 2021 provided by the Internet Archive. …”