Hematología uses PKP Preservation Network (PKP PN). Through the activation of the LOCKSS (Lots of Copies Keeps Safe Stuff) function, this storage system allows decentralized and distributed preservation, continuous access, and preservation of the original version of the contents from journals managed on the OJS (Open Journals System) platform. It is done by digitally safeguarding their content through the creation of permanent files of the journal for conservation and restoration purposes.