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 “8c single letter rate for less than 40 miles stampless cover” — 64 records examined, 0 dropped by the rights gate.
Archives queried 2026-08-31 23:29 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 Death of Socrates
Jacques Louis David · 1787
8c single letter rate for less than 40 miles stampless cover
Artist not stated in the record · September 14, 1812
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
25c single letter rate more than 400 miles Arkansas Territory stampless cover
Artist not stated in the record · March 3, 1832
Circus Sideshow (Parade de cirque)
Georges Seurat · 1887–88
Stampless Cover
Artist not stated in the record · 1851
Battle between Christians and Muslims at El Sotillo
Francisco de Zurbarán · ca. 1637–39
Stampless Cover
Artist not stated in the record · 1844
The Nativity with Donors and Saints Jerome and Leonard
Gerard David · ca. 1510–15
Stampless Cover
Artist not stated in the record · 1850
The Horse Fair
Rosa Bonheur · 1852–55
Stampless Cover
Artist not stated in the record · 1846
The Card Players
Paul Cézanne · 1890–92
Stampless Cover
Artist not stated in the record · c. 1850
Juan de Pareja (ca. 1608–1670)
Velázquez (Diego Rodríguez de Silva y Velázquez) · 1650
Stampless Cover
Artist not stated in the record · 1825
An Egyptian Peasant Woman and Her Child
Léon Bonnat · 1869–70
Stampless Cover
Artist not stated in the record · 1847
A Hunting Scene
Piero di Cosimo (Piero di Lorenzo di Piero d'Antonio) · ca. 1494–1500
Folded letter by US Navy Surgeon David Shelton Edwards
Artist not stated in the record · July 28-29, 1837
The Public Viewing David's "Coronation" at the Louvre
Louis Léopold Boilly · 1810
10c Washington sextuple rate cover
Rawdon, Wright, Hatch & Edson · May 23, 1849
The Forest in Winter at Sunset
Théodore Rousseau · ca. 1846–67
3c Washington single on cover
Artist not stated in the record · 1861
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. 35 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. 811404 matched · 40 examined · 0 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 2026-08-31 23:29 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.