Implementers may freely choose to use these fifteen properties either in their legacy dc: variant (e.g., http://purl.org/dc/elements/1.1/creator) or in the dcterms: variant (e.g., http://purl.org/dc/terms/creator) depending on application requirements. The RDF schemas of the DCMI namespaces describe the subproperty relation of dcterms:creator to dc:creator for use by Semantic Web-aware applications. Over time, however, implementers are encouraged to use the semantically more precise dcterms: properties, as they more fully follow emerging notions of best practice for machine-processable metadata.
The nano-crediting recommendations refer to Dublin Core properties in the http://purl.org/dc/elements/1.1/ namespace. However, DCMI documentation recommends use of the 'more precise' elements in the http://purl.org/dc/terms/ namespace, particularly in the context of 'Semantic Web-aware applications'.
See https://www.dublincore.org/specifications/dublin-core/dces/