CRMdig, for digital preservation, is an extension tailored for the domain of digital preservation. It provides a conceptual framework for documenting and managing the lifecycle of digital objects, ensuring their long-term preservation and accessibility. CRMdig incorporates additional classes and relationships to capture the unique characteristics and requirements of digital preservation, including concepts such as file formats, metadata, migration, authenticity, and provenance. It can be used to model and manage digital collections, establish preservation policies, and implement strategies for the sustainable preservation of digital materials.

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