CrossRef has been active in Brazil since 2008, depositing DOIs for journal articles and conference papers. Some key activities include mapping the visibility of Brazilian journals, helping to internationalize scientific publishing, and advising on indexing journals in databases like Web of Science and Scopus. CrossRef has partnered with organizations like CNPq and IBICT to integrate DOIs into systems like Lattes and OJS. Over 4,500 DOIs have been assigned to content in Brazil. The benefits of CrossRef participation include improved interoperability, metadata quality, and helping to internationalize Brazilian scientific production. Challenges include ensuring high visibility of content and continuing to work with formats like XML and integrating DO