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. 23 shown for “Observation window” — 64 records examined, 30 dropped by the rights gate.
Archives queried 2026-09-08 17:45 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 Coronation of the Infant Shapur II", Folio 538r from the Shahnama (Book of Kings) of Shah Tahmasp
Abu'l Qasim Firdausi · ca. 1525–30
Observation window
Artist not stated in the record · 1914-2008
Pistol Shield
Artist not stated in the record · ca. 1525 and later
Handscreen
Artist not stated in the record · 18th century
Heart of the Andes
Frederic Edwin Church · 1859
Design for a Painted Porcelain Plate, Fruits à l'eau de Vie (Fruits in Plum Liquor) for the Services des Objets de Dessert (Dessert Service)
Jean Charles Develly, French, 1783 - 1849 · 1819–20
Scene from a Novella
Liberale da Verona
A Room in the Reuss Palace, Dresden
Artist not stated in the record · 1835–37
Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
House Beautiful: Giacometti, from the series House Beautiful: Bringing the War Home
Martha Rosler, born New York City 1943 · ca. 1967-1972, printed 2018
Still Life with Teapot and Fruit
Paul Gauguin · 1896
Earth Path Indicator, Mercury 4
Honeywell Co. · 1961
The Visit
Pieter de Hooch · ca. 1657
A Window
Artist not stated in the record · 1650–1700
View from the House of Henry Briscoe Thomas, Baltimore
Artist not stated in the record · ca. 1841
Design for a Window Hanging
Artist not stated in the record · 1775–1800
Portrait of a Woman
Bernhard Strigel · ca. 1510–15
Textiles
Artist not stated in the record · 1820–1830
Madame Georges Charpentier (Marguerite-Louise Lemonnier, 1848–1904) and Her Children, Georgette-Berthe (1872–1945) and Paul-Emile-Charles (1875–1895)
Auguste Renoir · 1878
Textile
Artist not stated in the record · 1810–1820
Portrait of a Woman with a Man at a Casement
Fra Filippo Lippi · ca. 1440
Detail of Windows and Door of House of Hector Guuimard, 22 Rue Mozart
Hector Guimard, French, 1867–1942 · ca. 1910
The Artist's Sitting Room in Ritterstrasse
Adolph Menzel · 1851
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. 172 matched · 24 examined · 1 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. 8201 matched · 40 examined · 29 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.11 shown
These figures describe the pass run at 2026-09-08 17:45 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.