There's time until tomorrow to comment on the translation: https://twitter.com/rightsstmts/status/1049564313764188160 http://rightsstatements.org/en/documentation/translations.html
"Rights statements" is the set of standard descriptions of the copyright situation of works which don't have a public license. They're used in digital collections to facilitate reuse and aggregation, among the others, by Europeana and DPLA.
Federico