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 “Antoine Jean Duclos” — 64 records examined, 10 dropped by the rights gate.
Archives queried 2026-09-02 18:23 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Le Bal Paré
Antoine Jean Duclos · 1774
ÉTABLISSEMENT DE L’ÉCOLE ROYALE MILITAIRE
Saint-Aubin Gabriel de, French, 1724 – 1780 · 1766
Le Concert
Antoine Jean Duclos · 1774
NOUVELLES HALLES AUX GRAINS ET FARINES
Gravelot, French, 1699 - 1773, active in England · 1766
The Head of Cyrus brought to Queen Tomyris
Antoine Jean Duclos · 1785–89
Title Page
Antoine Watteau, French, 1684–1721 · 19th century
Le Bal Paré
Antoine Jean Duclos · 1774
Jean Louis Rodolphe Agassiz
Antoine Sonrel, 1779 - 1879?
Le Bal Paré
Antoine Jean Duclos · 1774
Self-Portrait of Antoine Watteau
Antoine Watteau, French, 1684–1721 · 1727
The Concert
Antoine Jean Duclos · 1774
Jean Louis Rodolphe Agassiz
Antoine Sonrel, 1779 - 1879? · 1863
The Concert
Antoine Jean Duclos · 1774
Jean Louis Rodolphe Agassiz
Antoine Sonrel, 1779 - 1879? · 1864
Arrival of Telemachus at the Island of Calypso
Antoine Jean Duclos
Robert Fulton
Artist not stated in the record · 1803 (cast 1908)
Antoine Laurent Lavoisier (1743–1794) and Marie Anne Lavoisier (Marie Anne Pierrette Paulze, 1758–1836)
Jacques Louis David · 1788
Panel Design
Jean-François-Antoine Boulanger, French?, active mid 18th century · mid- 18th century
Sabine Houdon (1787–1836)
Jean Antoine Houdon · 1788
Panel Design
Jean-François-Antoine Boulanger, French?, active mid 18th century · mid- 18th century
Mezzetin
Antoine Watteau · ca. 1718–20
Plan general de l’Hostel de Sully à la rue St. Antoine
Jean Marot, French, 1619 - 1679 · ca.1635–ca.1660
Winter
Jean Antoine Houdon · 1787
Galerie métallique des grands hommes français (Great Men of France)
Jean-Auguste Barre, French, 1793 - 1855 · 1833
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. 594 matched · 24 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. 18874 matched · 40 examined · 7 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 2026-09-02 18:23 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.