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. 13 shown for “5c & 10c composite large die trial color proof” — 25 records examined, 2 dropped by the rights gate.
Archives queried 2026-09-08 14:22 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 Penitence of Saint Jerome
Joachim Patinir · ca. 1515
5c & 10c composite large die trial color proof
Artist not stated in the record · 1847
Hermann von Wedigh III (died 1560)
Hans Holbein the Younger · 1532
Circus Sideshow (Parade de cirque)
Georges Seurat · 1887–88
The Death of Socrates
Jacques Louis David · 1787
Self-Portrait with Two Pupils, Marie Gabrielle Capet (1761–1818) and Marie Marguerite Carraux de Rosemond (1765–1788)
Adélaïde Labille-Guiard · 1785
Elizabeth Farren (born about 1759, died 1829), Later Countess of Derby
Sir Thomas Lawrence · 1790
Scenes from the Legend of Saint Vincent of Saragossa and the History of His Relics
Artist not stated in the record · ca. 1245–47
The Adoration of the Magi
Joos van Wassenhove · 1472–74
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
The Dance Class
Edgar Degas · 1874
Virgin and Child
Hans Memling · Early sixteenth century
The Annunciation
Hans Memling · ca. 1465–70
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. 186 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. 1 matched · 1 examined · 0 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.1 shown
These figures describe the pass run at 2026-09-08 14:22 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.