OpenCitations Meta CSV dataset of all bibliographic metadata

Compared to the previous version, this release includes metadata related to citing and cited bibliographic resources added from the February 2026 version of Crossref (https://api.crossref.org/snapshots/monthly/2026/02/all.json.tar.gz) and the August 2025 version of JaLC (https://api.japanlinkcenter.org/). It also includes an alignment with OpenAlex identifiers (https://openalex.s3.amazonaws.com/browse.html). Moreover, this version introduces two new sources: OUTCITE (https://doi.org/10.5281/zenodo.18172742) and Matilda (https://matilda.science).

This dataset contains all the bibliographic metadata (in CSV format) included in OpenCitations Meta. In particular, each line of the CSV file defines a bibliographic resource, and includes the following information:

• [field "id"] the IDs for the document described within the line;
• [field "title"] the document's title;
• [field "author"] the authors of the document;
• [field "pub_date"] the date of publication;
• [field "venue"] information about the venue, i.e. the bibliographical resource to which the document belongs;
• [field "volume"] the volume sequence identifier (e.g. a number) to which the entity belongs;
• [field "issue"] the issue sequence identifier (e.g. a number) to which the entity belongs;
• [field "page"] the page range of the resource described in the row;
• [field "type"] the type of resource described in the row;
• [field "publisher"] the entity responsible for making the resource available;
• [field "editor"] the editors of the document.

This version of the dataset contains:

• 147,369,096 bibliographic entities
• 422,366,470 authors, 3,673,399 editors, and 115,504,540 publishers (counted by their roles, without disambiguating individual entities)
• 2,302,011 publication venues

The compressed dataset weighs ~8G, while, when extracted, it weighs ~56G on an ext4 filesystem.

Additional information about OpenCitations Meta at official webpage: https://opencitations.net/meta