The Journal of Clinical Nephrology (JCN) is committed to the long-term preservation, accessibility, and unrestricted dissemination of published research. Our repository policy allows authors, institutions, and organizations to archive and share research while ensuring compliance with open-access best practices.

Self-Archiving Policy

Authors are encouraged to archive their work in repositories, ensuring maximum visibility and impact. The following versions of manuscripts may be deposited in institutional or public repositories:

• Preprint (Submitted Version): Authors may deposit their submitted manuscript in preprint servers or institutional repositories before peer review.
• Postprint (Accepted Version): Authors may deposit the accepted version of their manuscript (after peer review but before final formatting) in repositories, research networks, or personal websites.
• Published Version (Publisher’s PDF): The final published article may be deposited immediately upon publication under the CC BY 4.0 license, which allows unrestricted sharing, reuse, and redistribution with proper attribution.

Authors must ensure that the archived version includes a citation and link to the official published article (DOI).

Institutional and Subject-Based Repositories

To enhance discoverability and scholarly communication, JCN supports archiving in institutional and subject-based repositories, including but not limited to:

• University Repositories (e.g., Harvard, MIT, Oxford, Yale, Stanford, Cambridge, University of Toronto, National University of Singapore, etc.).
• Public Research Repositories (e.g., Zenodo, arXiv, Figshare).
• Medical and Life Sciences Repositories (e.g., PubMed Central, Europe PMC).
• Open Access Archives (e.g., OpenAIRE, BASE).
• Research Networking Sites (e.g., ResearchGate, Academia.edu).

Digital Archiving and Long-Term Preservation

To ensure the long-term accessibility of published content, JCN participates in multiple archiving and digital preservation programs:

• LOCKSS (Lots of Copies Keep Stuff Safe): A decentralized preservation system ensuring redundancy.
• CLOCKSS (Controlled Lots of Copies Keep Stuff Safe): A secure and distributed archiving system.
• Portico: A trusted third-party digital preservation archive.
• PKP Preservation Network (PN): Ensures long-term storage of journal content.

These archiving mechanisms safeguard research against loss, manipulation, or technological obsolescence.

Indexing and Discoverability

To maximize research visibility, JCN is indexed in globally recognized academic databases and university libraries, including:

• Google Scholar
• CrossRef
• DOAJ (Directory of Open Access Journals)
• PubMed Central (upon eligibility)
• Scilit
• BASE (Bielefeld Academic Search Engine)
• OpenAIRE
• ScienceOpen
• WorldCat

Additionally, JCN is indexed by several leading university libraries, such as Harvard, Yale, Oxford, MIT, Stanford, and the National Library of Medicine.

OAI-PMH and Metadata Harvesting

JCN supports the **Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH)**, allowing repositories and indexing services to automatically collect metadata for published articles.

• The OAI-PMH base URL for metadata harvesting is: [Insert OAI-PMH Base URL].
• Metadata formats include Dublin Core (DC), MODS, and OAI-DC.
• OAI-PMH compatibility ensures that published articles are seamlessly integrated into institutional and national repositories.

Compliance with Open Science Policies

JCN complies with international open-access and repository mandates, ensuring that research is freely accessible to the scientific community. Our repository policy aligns with:

• Plan S requirements for open-access publishing.
• Horizon Europe open-access mandates.
• NIH Public Access Policy for federally funded research.