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. 24 shown for “Four-Cornered Hat” — 64 records examined, 19 dropped by the rights gate.
Archives queried 2026-08-27 06:30 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Four-Cornered Hat
Artist not stated in the record · 7th–9th century
Portrait of Lambert Hortense Montfort
Artist not stated in the record · ca. 1550
Four-Cornered Hat
Artist not stated in the record · 500–900 CE
Six Studies of Soldiers' Heads
Winslow Homer, American, 1836–1910 · 1864
Four-Cornered Hat
Artist not stated in the record · 7th–9th century
Tintype of woman in jacket and dress with hat and muff
Artist not stated in the record · 1880s
Four-Cornered Hat
Artist not stated in the record · 4th–8th century
Program for The Negro Soldier
Artist not stated in the record · 1944
Four-Cornered Hat
Artist not stated in the record · 500–900 CE
Photographic postcard of three unidentified women
Artist not stated in the record · 1904-1918
Four-Cornered Hat
Artist not stated in the record · 7th–9th century
Photographic postcard of three unidentified women
Artist not stated in the record · 1904-1918
Four-Cornered Hat
Artist not stated in the record · 7th–9th century
Photographic postcard of Daniel Hendricks in Masonic regalia
Artist not stated in the record · early 1920s
Four-Cornered Hat
Artist not stated in the record · 7th–9th century
Lobby card for Lying Lips
Artist not stated in the record · 1939
Four-Cornered Hat
Artist not stated in the record · 7th–9th century
Geese Sketches with Figures, East Hampton, New York
Frederic Edwin Church, American, 1826–1900 · probably July 1858
Four-Cornered Hat
Artist not stated in the record · 7th–9th century
Tintype of a seated man
Unidentified · 1880s
Four-Cornered Hat
Artist not stated in the record · 7th–9th century
Lobby card for Gun Moll aka Gun Smashers
Toddy Pictures Company, American, 1941 - 1970s · 1944
Four-Cornered Hat
Artist not stated in the record · 4th–8th century
Photographic portrait of Lt. Charles J. Blackwood
Duce & McClymonds, American, Twentieth century · 1914-1918
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. 85 matched · 24 examined · 0 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. 61 matched · 40 examined · 19 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.12 shown
These figures describe the pass run at 2026-08-27 06:30 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.