Two 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 “Louis Jean Desprez” — 64 records examined, 6 dropped by the rights gate.
Archives queried 2026-08-28 20:47 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 Girandola at the Castel Sant'Angelo, Rome
Louis Jean Desprez · ca. 1781–1784

Sepulcher in Egyptian Style with Death Carrying a Lamp
Louis-Jean Desprez, French, active Sweden, 1743–1804 · 1779–84

Cloister of the Certosa di San Martino, Naples
Louis Jean Desprez · ca. 1777–79

Design for the Ceiling of the Salon of the Palazzo Spinola, Genoa
Artist not stated in the record · 1776

Design for the Decoration of the Altar to be erected during the Holy Week, Dedicated to Monseigneur Christophe de Beaumont, Archbishop of Paris
Louis Jean Desprez · 1769

Sepulcher with Death Seated and Crowned
Louis-Jean Desprez, French, active Sweden, 1743–1804 · 1779–84

Ancient Scene with a Funeral Ceremony for an Actor
Louis Jean Desprez · ca. 1777

Interior of St. Peter's Illuminated
Louis-Jean Desprez, French, active Sweden, 1743–1804 · 1776–84

The Capture of Selinus by Hannibal
Louis Jean Desprez · n.d.

Sepulcher in Egyptian Style with Sphinxes and an Owl
Louis-Jean Desprez, French, active Sweden, 1743–1804 · ca. 1779–84

The Chimera (La Chimère de Monsieur Desprez)
Louis Jean Desprez · ca. 1777–84

Sepulcher in Egyptian Style with Caryatids and a Lion
Louis-Jean Desprez, French, active Sweden, 1743–1804 · ca. 1779–84

Antoine de Chézy
Louis Jean Desprez · ca. 1772–76

Jean Louis Rodolphe Agassiz
Antoine Sonrel, 1779 - 1879?

Interior of the Palazzo Spinola, Genoa
Louis Jean Desprez · 1777

Jean Louis Rodolphe Agassiz
Unidentified Artist · 1861

View of the Portal and Principal Entrance of the Cathedral of Palermo during the Festival of Sta. Rosalia
Louis Jean Desprez · n.d.

Jean Louis Rodolphe Agassiz
Unidentified Artist · c. 1857

Untitled
Louis Jean Desprez · n.d.

Jean Louis Rodolphe Agassiz
Carleton E. Watkins, 11 Nov 1829 - 23 Jun 1916 · c. 1870

Tomb with Death Enthroned as a Sphinx
Louis Jean Desprez · ca. 1779–84

Jean Louis Rodolphe Agassiz
Antoine Sonrel, 1779 - 1879? · 1863

The Tomb of Agamemnon
Louis Jean Desprez · ca. 1787

Jean Louis Rodolphe Agassiz
Antoine Sonrel, 1779 - 1879? · 1864
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. 1890 matched · 24 examined · 1 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. 53402 matched · 40 examined · 5 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 2026-08-28 20:47 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.