What rights information does the Europeana Search API expose, and how does its reusability filter relate to rights URIs?

Europeana's Search API documentation (archived 13 Apr 2024) offers a reusability filter whose 'open' bucket covers PDM, CC0, CC BY and CC BY-SA and whose 'restricted' bucket covers NC and other restricted statements, with a 'permission' bucket for the rest; the API requires a registered key. Curator qualifications: Archived (2024) documentation; current API docs not checked. Rights fields at aggregation vs web-resource level (E3) and media filter (E5) not re-read; reusability is a coarse bucket over the rights URI (producer synthesis). Text only; no API called (keys required), no images downloaded. Limitations: Snapshot-dated. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "http://web.archive.org/web/20240413125146id_/https://pro.europeana.eu/page/search",
      "note": "IA id_ 20240413125146 of pro.europeana.eu/page/search, 'Reusability' table and introduction"
    }
  ]
}