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. 14 shown for “Hans Richter, American, b. Berlin, Germany, 1888–1976” — 26 records examined, 6 dropped by the rights gate.
Archives queried 2026-09-05 11:03 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 Annunciation
Hans Memling · ca. 1465–70
Self-Portrait / Verso: Sketch
Hans Richter, American, b. Berlin, Germany, 1888–1976 · 1909
The Annunciation
Hans Memling · 1480–89
Nude
Hans Richter, American, b. Berlin, Germany, 1888–1976 · 1908
Hermann von Wedigh III (died 1560)
Hans Holbein the Younger · 1532
Erasmus of Rotterdam
Hans Holbein the Younger · ca. 1532
Portrait of a Young Man; (reverse) Girl Making a Garland
Hans Süss von Kulmbach · ca. 1508
Benedikt von Hertenstein (born about 1495, died 1522)
Hans Holbein the Younger · 1517
Crucifixion Group
Hans Wydytz I · 1490–1510
Marble portrait of the emperor Caracalla
Artist not stated in the record · 212–217 CE
Tree of Jesse Window: The Reclining Jesse, King David, and Scenes from the Life of Jesus
Artist not stated in the record · 1280–1300
Virgin and Child with Saint Anne
Albrecht Dürer · probably 1519
Antoine Dominique Sauveur Aubert (born 1817), the Artist's Uncle, as a Monk
Paul Cézanne · 1866
Wheat Field with Cypresses
Vincent van Gogh · 1889
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. 107 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. 2 matched · 2 examined · 0 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.2 shown
These figures describe the pass run at 2026-09-05 11:03 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.