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 “Adolf von Menzel, German, 1815 - 1905” — 45 records examined, 32 dropped by the rights gate.
Archives queried 2026-09-06 11:16 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 Artist's Sitting Room in Ritterstrasse
Adolph Menzel · 1851
Arm with a Drawn Sword, Tailpiece for Franx Kugler's "Geschichte Friedrichs des Grossen, Leipzig, 1840–1842
Adolf von Menzel, German, 1815 - 1905 · 1840–41
Woman with a Crushed Velvet Hat
Adolph Menzel · 1894
Contribution
Henry Wolf, born Eckwersheim, Alsace 1852-died New York City 1916 · 1890
The Choirstalls in the Mainz Cathedral
Adolph Menzel · 1869
Tiger
Henry Wolf, born Eckwersheim, Alsace 1852-died New York City 1916 · 1890
Aristotle with a Bust of Homer
Rembrandt (Rembrandt van Rijn) · 1653
At Kissingen
Henry Wolf, born Eckwersheim, Alsace 1852-died New York City 1916 · 1890
Sharpening Tools in a Village Smithy
Henry Wolf, born Eckwersheim, Alsace 1852-died New York City 1916 · 1891
A Sermon in the Open Air
Henry Wolf, born Eckwersheim, Alsace 1852-died New York City 1916 · 1890
Frederick and His Men at Hochkirch
Henry Wolf, born Eckwersheim, Alsace 1852-died New York City 1916 · 1891
The Promenader
Henry Wolf, born Eckwersheim, Alsace 1852-died New York City 1916 · 1890
Cup and Saucer Commemorating the Battle of Waterloo
Royal Porcelain Manufactory, Berlin, German, established 1763 · early 19th century
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. 5 matched · 5 examined · 1 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.4 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 115429 matched · 40 examined · 31 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.9 shown
These figures describe the pass run at 2026-09-06 11:16 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.