Digital preservation of academic journals is essential to ensure long-term access to their contents, which requires the use of durable formats that are resilient to technological change. In traditional editorial workflows, journals typically produce generic PDF files that are deposited in repositories without guarantees of long-term preservation. As a result, repositories must independently decide whether to convert these files into PDF/A or other preservation-friendly formats. Moreover, the absence of a single, widely adopted standard limits interoperability between publishers and repositories. This work proposes leveraging the publication workflow of Open Journal Systems (OJS) to generate, at the point of origin, both JATS XML and preservation-ready PDF/A files, and to package them using the BagIt standard to facilitate repository deposit. In the proposed implementation, OJS plugins automatically convert articles from DOCX to JATS and generate final PDF/A outputs. This integrated approach shifts preservation responsibilities to the editorial workflow, significantly reducing the burden on repositories while improving interoperability and archival readiness. To date, the system has successfully generated JATS XML and PDF/A files, with BagIt packaging planned as the next step toward a complete preservation workflow.

The Swiss DLCM's open access technology enables long-term digital preservation. The strengths of this technology lie in its modularity, scalability and open architecture, which comply with the OAIS standard to guarantee the integrity of the archives and mitigate preservation risks. By using the DataCite schema for metadata, assigning a persistent identifier to each archive, and using persistent identifiers in metadata for individuals, institutions and licenses, DLCM adheres to FAIR principles. An ergonomic Web portal facilitates data deposit and access based on specific permission levels and data sensitivity in the fields of research, administrative, and heritage. The ingestion phase automatically qualifies the formats submitted, informing users of any risk of file obsolescence by assigning a compliance level based on file format identification, performed by the PRONOM registry. Ready for Core Trust Seal certification, designed using cutting-edge software practices, DLCM guarantees maintainability, including compatibility with “DevOps” practices. Beyond interfacing with standard storage industry protocols, DLCM innovates with a DNA connector. This connector, developed as part of the European DNAMIC project (https://dnamic.org), includes all the processing steps necessary to encode binary files into chemically synthesized nucleotides and vice versa, and includes error correction mechanisms to recover the archives embedded in these tiny molecules.