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 “3c Washington Treasury Department cover” — 64 records examined, 4 dropped by the rights gate.
Archives queried 2026-08-31 23:04 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Cover
Artist not stated in the record · 16th–17th century
3c Washington Treasury Department cover
Artist not stated in the record · Aug 11, 1875
The Interior of a Woman Painter's Studio
Marie Victoire Lemoine · 1789
3c Washington Treasury Department cover front
Artist not stated in the record · 1873
Antoine Laurent Lavoisier (1743–1794) and Marie Anne Lavoisier (Marie Anne Pierrette Paulze, 1758–1836)
Jacques Louis David · 1788
3c Washington Treasury Department card plate proof
Artist not stated in the record · 1879-1894
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
3c Washington Treasury Department single
Artist not stated in the record · 1873
The Rest on the Flight into Egypt
Gerard David · ca. 1512–15
3c Washington plate proof single
Artist not stated in the record · 1873
Virgin and Child
Hans Memling · Early sixteenth century
Man Weighing Gold
Adriaen Isenbrant · ca. 1515–20
3c Washington on Union cover
Artist not stated in the record · 1862
The Death of Socrates
Jacques Louis David · 1787
3c Washington on Confederate Civil War Patriotic cover
Artist not stated in the record · 1861-1865
Plaque with Saint Paul
Artist not stated in the record · 550–600
3c Washington on Confederate cover
Artist not stated in the record · May 25, 1861
Covered Beaker
Hans Greiff · ca. 1470
3c Washington on Confederate cover
Artist not stated in the record · May 15, 1861
Plaque with Saint Peter
Artist not stated in the record · 550–600
3c Washington D Grill cover
Artist not stated in the record · April 6, 1868
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. 159 matched · 24 examined · 4 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. 618445 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 23:04 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.