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This page contains details of and links to all the data dumps of the OpenCitations Meta and OpenCitations Index. They are made available online by means of the support of Figshare and of the Internet Archive.

OpenCitations Meta

The OpenCitations Meta database stores and delivers bibliographic metadata for all publications involved in the OpenCitations Index.

Most recent OpenCitations Meta data dump - November 2023 Dump

Dump created on 2023-11-29. Compared to the previous dump, this one adds the metadata contained in the Japan Link Center (JaLC). This dump includes information on:

Type and formatArchiveSize
Metadata (CSV)ZIP10 GB (43 GB zipped) on NTFS
[TBA] Metadata and provenance (RDF)ZIP[TBA]

In addition, a CSV dump containing a mapping between all the bibliographic resources identified by an OMID (e.g., br/12345) and their corresponding PID(s) (e.g., DOI, PMID)

BR OMID map (CSV)ZIP4.4 GB (1.7 GB zipped)
Previous dumps

OpenCitations Index

The OpenCitations Index stores OMID-to-OMID references representing all the references gathered from several sources.

Most recent OpenCitations Index data dump - November 2023 Dump

Dump created on 2023-11-29. Compared to the previous dump, this one adds the citation data contained in the Japan Link Center (JaLC) and in the Crossref dump dated September 2023. This dump includes information on:

Type and formatArchiveSize
Citation data (CSV)ZIP171 GB (26.8 GB zipped)
Citation data (N-Triple)ZIP1.4 TB (62.3 GB zipped)
Citation data (Scholix)ZIP1.7 TB (37 GB zipped)
Provenance data (CSV)ZIP14 GB (312 GB zipped)
Provenance data (N-Triple)ZIP2.5 TB (79 GB zipped)

In addition:

Type and formatArchiveSize
Citation data sources' info (N-Triple): information regarding the data source collection (e.g., COCI, DOCI, POCI, etc) of all the citation dataZIP351 GB (19 GB zipped)
Citation count data (CSV): the number of incoming citations to each bibliographic entity (identified by an OMID) in OpenCitations IndexZIP1.7 GB (0.4 GB zipped)
Reference count data (CSV): the number of references of each bibliographic entity (identified by an OMID) in OpenCitations IndexZIP1.7 GB (0.35 GB zipped)
Previous dumps