OpenTwo archives, queried live.
Every record below comes from The Met or Smithsonian Open Access and was filtered on that archive’s own rights field before it reached this page. 13 shown for “Muller” — 64 records examined, 45 dropped by the rights gate.
Archives queried 2026-08-27 13:25 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Expulsion from Paradise (one of a set of four)
Muller · mid-17th century
Adolfo Müller-Ury Self-portrait
Adolfo Müller-Ury, 29 Mar 1862 - 7 Jul 1947 · 1933
The Creation of the Animals (one of a set of four)
Muller · 1694
The Creation of Adam (one of a set of four)
Muller · mid-17th century
Cain Slaying Abel (one of a set of four)
Muller · late 17th century
Advertisement for Muller Stoneware Manufactory
Alexandre-Louis-Marie Charpentier · 1897
Century Vase
Karl L. H. Müller · 1876
Century Vase
Karl L. H. Müller · 1877
Centennial Pedestal
Karl L. H. Müller · 1876
Advertisement for the Müller Potteries at Ivry
Alexandre-Louis-Marie Charpentier · 1897
The Hall of Antiquities at Charlottenborg Palace, Copenhagen
Adam August Müller · 1830
Pilgrim vase
Union Porcelain Works · 1876
Jardinière
Union Porcelain Works · 1876
Where these records came from.
Two archives are wired, and only two. Each one is filtered on its own rights field — never on a title match, and never on the presence of an image file.
- The Met Collection API (Open Access)Rights field:
isPublicDomain. 811 matched · 24 examined · 6 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.12 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 7338 matched · 40 examined · 39 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.1 shown
These figures describe the pass run at 2026-08-27 13:25 UTC, during this request. A completed pass is kept for 24 hours and replayed for an identical search, which is what keeps repeated queries inside Smithsonian’s 30-requests-per-hour allowance. A pass in which either archive failed to answer is never kept — an outage must not be replayed as though it were a finding about the catalogue.
Wikimedia Commons and the Library of Congress are deliberately not wired. Wikimedia was confirmed, on a live query, to return CC-BY material inside the same result set as genuine public domain works, and filtering it safely has not been designed yet. loc.gov was blocked by bot detection during the source evaluation, so its rights vocabulary has never been observed — and nothing here is built on a field nobody has read.
An image file is a rights claim. It never travels without its field.