Two 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 “10c Washington vertical pair” — 64 records examined, 4 dropped by the rights gate.
Archives queried 2026-09-07 11:04 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Mantel clock with musical movement
Jean-Baptiste-André Furet · ca. 1784

10c Washington vertical pair
Artist not stated in the record · 1847

Pair of Doors Carved in the 'Beveled Style'
Artist not stated in the record · 9th century

10c Jefferson Davis vertical frameline pair
Artist not stated in the record · 1863

Xantil (deity censer)
Eastern Nahua artist(s) · 1200–1521 CE

10c Washington plate proof pair
National Bank Note Company · 1861

Pair of earflare frontals
Maya artist(s) · 200–600 CE

10c Washington pair
National Bank Note Company · 1861

2c Washington horizontal imperforate vertical pair
Bureau of Engraving and Printing · 1919

Orchid Pavilion Gathering; Autumn Harvest Festival
Ike no Taiga · ca. 1763

8c Martha Washington margin signed vertical pair
Bureau of Engraving and Printing · 1902

The Life of the Virgin
Adriaen Isenbrant · after 1521

1c Washington horizontal imperforate vertical pair
Bureau of Engraving and Printing · 1919

Pair of carved ornaments with the Maize God
Maya artist(s) · 400–700 CE

2c Washington US Automatic Vending Company type I coil vertical pair
Artist not stated in the record · 1908

Pair of Nine Light Candelabra with Six Figures, Masks, and Chimeras
Antoine-Louis Barye · modeled ca. 1840, possibly cast between 1857 and 1875

2c Washington US Automatic Vending Company type I coil vertical pair
Artist not stated in the record · 1908

The Rest on the Flight into Egypt
Gerard David · ca. 1512–15

4c Washington coil pair
Artist not stated in the record · August 15, 1910

Boating
Edouard Manet · 1874

5c Washington coil pair
Artist not stated in the record · 1909

Virgin and Child
Hans Memling · Early sixteenth century

2c Washington "Brooklyn Mafia" counterfeit vertical pair
Artist not stated in the record · 1922-1923
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. 305 matched · 24 examined · 2 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. 184180 matched · 40 examined · 2 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 2026-09-07 11:04 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.