The Journal of Clinical Nephrology (JCN) is dedicated to ensuring the **long-term preservation, accessibility, and integrity** of published content. Our archiving and digital preservation strategies safeguard scholarly research against data loss, technological obsolescence, and unauthorized alterations. We utilize internationally recognized digital archiving services and institutional repositories to provide a permanent academic record.

Digital Preservation Strategy

To guarantee the permanent availability of all published articles, JCN employs the following digital preservation mechanisms:

• Portico: A leading independent digital preservation service protecting against content loss.
• PKP Preservation Network (PN): A distributed digital archiving system that ensures the longevity of journal content.

These preservation systems safeguard content against accidental deletions, server failures, and cyber threats, ensuring that all published research remains accessible indefinitely.

Repository and Institutional Archiving

To enhance the discoverability and accessibility of published research, JCN supports institutional and subject-based repository archiving. Published articles are archived in:

• University Libraries: Harvard University, MIT, Yale, Stanford, Oxford, University of Toronto, and other academic institutions.
• Public Repositories: Zenodo, arXiv, Figshare.
• Medical and Life Sciences Databases: PubMed Central, Europe PMC.
• General Open-Access Archives: OpenAIRE, BASE.

Indexing and Discoverability

To ensure maximum visibility and academic impact, JCN is indexed in leading scholarly databases, including:

• Google Scholar
• CrossRef
• Scilit
• BASE (Bielefeld Academic Search Engine)
• OpenAIRE
• ScienceOpen
• WorldCat
• PubMed Central (upon eligibility)

Additionally, articles are indexed in major university libraries worldwide, ensuring easy accessibility by researchers, educators, and medical practitioners.

OAI-PMH and Metadata Harvesting

JCN supports the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) to facilitate automatic metadata retrieval by repositories and search engines.

• OAI-PMH Base URL: [Insert OAI-PMH Base URL].
• Metadata Formats: Dublin Core (DC), MODS, OAI-DC.
• Compatibility: Enables seamless integration with institutional and global repositories.

Compliance with Open Science and Data Policies

Our preservation and archiving policy aligns with major international open-access mandates, ensuring compliance with:

• Plan S open-access policies.
• Horizon Europe research accessibility mandates.
• NIH Public Access Policy and other funding agency requirements.

Authors are encouraged to deposit datasets in open-access repositories to enhance research transparency and reproducibility.

Long-Term Commitment to Research Integrity

The JCN preservation policy ensures:

• Permanent archiving of all published articles to prevent loss or deletion.
• Redundancy through multiple preservation services to safeguard content availability.
• Transparency by allowing authors to deposit versions of their work in reputable repositories.
• Continuous improvement as we adopt evolving best practices in digital preservation and archiving.