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. 16 shown for “F. Joubert” — 63 records examined, 39 dropped by the rights gate.
Archives queried 2026-08-28 08:51 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.![[Carte-de-Visite Album of British and European Royalty], by F. Joubert](/_next/image?url=https%3A%2F%2Fimages.metmuseum.org%2FCRDImages%2Fph%2Fweb-large%2FDP333840.jpg&w=3840&q=75)
[Carte-de-Visite Album of British and European Royalty]
F. Joubert · 1860s–70s
1c John C. Calhoun CSA single
Thomas De La Rue & Co., Ltd. · c. 1862
Writing table (bureau plat)
Gilles Joubert · 1759
1c John C. Calhoun single
Artist not stated in the record · 1862
Ewer
François Joubert · 1753–54
5c Davis single
Artist not stated in the record · 1862
Salvator, from "The Art Union" (later "The Art Journal"), opposite p. 252
Ferdinand Joubert · August 1848
1c John C. Calhoun block of four
Thomas De La Rue & Co., Ltd. · 1862
The Flight into Egypt
François Le Moyne · early 18th century
The Unicorn Crosses a Stream (from the Unicorn Tapestries)
Artist not stated in the record · 1495–1505
The Colosseum, two herds being directed towards the amphitheater in the foreground, plate 8 from "Roman landscapes and ruins" (Paysages et ruines de Rome)
Stefano della Bella · ca. 1646
Ruins of a temple in a Roman landscape, plate 13 from "Roman landscapes and ruins" (Paysages et ruines de Rome)
Stefano della Bella · ca. 1646
A triple waterfall, a dead tree at right, a mountain and a herd of cows in the background at right, plate 7 from "Roman landscapes and ruins" (Paysages et ruines de Rome)
Stefano della Bella · ca. 1646
Cows crossing a valley at left, a horseman and other cows in the background, plate 6 from "Roman landscapes and ruins" (Paysages et ruines de Rome)
Stefano della Bella · ca. 1646
Campo Vaccino, a buffalo and two shepherds in center, the Fontanone to right in the middle ground, various animals and people in the background, plate 2 from "Roman landscapes and ruins" (Paysages et ruines de Rome)
Stefano della Bella · ca. 1646
A Corinthian capital on the ground at left, a monument with figures in low relief at left in the middleground, various animals and two shepherds at right, plate 4 from "Roman landscapes and ruins" (Paysages et ruines de Rome)
Stefano della Bella · ca. 1646
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. 23 matched · 23 examined · 3 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. 652819 matched · 40 examined · 36 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.4 shown
These figures describe the pass run at 2026-08-28 08:51 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.