OpenCitations Index CSV dataset storing data source information about all the citation data

This dataset contains data source collection (e.g., COCI, DOCI, POCI, etc) information about all the citation data (in CSV format) included in the OpenCitations Index, released on July 10, 2025. In particular, any citation in the dataset, defined with its corresponding OCI (first column) has a corresponding value that defines the source (second column), e.g. "coci", "doci", "poci", etc.This version of the dataset contains:2,693,728,426 citationsThe size of the zipped archive is 23 GB, while the size of the unzipped CSV files is 104 GB.