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. 22 shown for “2c Post Office Department single” — 64 records examined, 2 dropped by the rights gate.
Archives queried 2026-08-31 21:24 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Antoine Laurent Lavoisier (1743–1794) and Marie Anne Lavoisier (Marie Anne Pierrette Paulze, 1758–1836)
Jacques Louis David · 1788
2c Post Office Department single
Artist not stated in the record · 1873
The Interior of a Woman Painter's Studio
Marie Victoire Lemoine · 1789
2c Statue of Freedom Newspaper and Periodical imprint single
Artist not stated in the record · 1875
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
2c Andrew Jackson State Department special printing single
Artist not stated in the record · 1875
The House with the Cracked Walls
Paul Cézanne · 1892–94
2c Andrew Jackson War Department special printing single
Artist not stated in the record · 1875
The Death of Socrates
Jacques Louis David · 1787
2c Andrew Jackson Justice Department special printing single
Artist not stated in the record · 1875
The Hours of Jeanne d'Evreux, Queen of France
Jean Pucelle · ca. 1324–28
2c Andrew Jackson Interior Department special printing single
Artist not stated in the record · 1875
A Syce (Groom) Holding Two Carriage Horses
Shaikh Muhammad Amir of Karraya · ca. 1845
2c Official plate proof single
Artist not stated in the record · 1873
Mantel clock with musical movement
Jean-Baptiste-André Furet · ca. 1784
The Classic of Filial Piety
Li Gonglin · ca. 1085
Damascus Room
Artist not stated in the record · dated 1119 AH/1707 CE
2c Andrew Jackson Executive special printing single
Artist not stated in the record · 1875
Circus Sideshow (Parade de cirque)
Georges Seurat · 1887–88
2c Andrew Jackson special printing single
Continental Bank Note Company · 1875
Night-Shining White
Han Gan · ca. 750
2c Black on Buff Paper Adams' City Express Post Single
Artist not stated in the record · 1850-1851
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. 56 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. 602723 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 21:24 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.