arXiv future proofs access to research with third-party digital preservation – arXiv blog

"arXiv has entered into agreements with two third-party digital preservation services, adding a level of protection that goes beyond arXiv’s in-house activities and safeguarding open research for the future. Through its agreements with Portico, a not-for-profit community-supported dark archive for scholarly materials, and TIB – Leibniz Information Centre for Science and Technology (the German National Library of Science and Technology), arXiv is ensuring that the research it hosts will remain discoverable, accessible, and usable by researchers well into the future.

TIB announced in 2025 that it was building a dark archive to protect arXiv content; having a formal agreement in place allows for better collaboration and provides the ability for TIB to provide access to arXiv content in a worst case scenario. Both Portico and TIB will keep arXiv content “dark” (preserved but not available for use) until such time as it becomes necessary for them to provide access to the content. While our hope is that this time never comes, having this extra layer of security allows us to assure the community that arXiv content will not be lost."