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 “Marble relief fragment” — 64 records examined, 25 dropped by the rights gate.
Archives queried 2026-08-26 22:58 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Commode à vantaux
David Roentgen · ca. 1775–79 with later alterations

Frontal from the base of a funerary couch with Sogdian musicians and dancers and Buddhist divinities
Artist not stated in the record · 550-577

Drop-front secretary (Secrétaire en armoire)
Jean Henri Riesener · 1783

George Scott Winslow
Edmonia Lewis, American, 1844 - 1907 · 1866

Marble relief fragment
Artist not stated in the record · 1st–2nd century CE

Design for Mantelpiece Reliefs, Noble Cabinet, Palazzo Altieri
Giuseppe Barberi, Italian, 1746–1809 · ca. 1789

Commode (Secrétaire à abattant)
Jean Henri Riesener · 1783

Wall Decoration for Cosimo III de' Medici
Giovanni Battista Foggini, 1652 – 1725 · ca. 1690

Marble relief fragment
Artist not stated in the record · 1st–2nd century CE

Fragment
Artist not stated in the record · 18th century

Marble relief fragment with gladiators
Artist not stated in the record · 1st–3rd century CE

Sala del Thorvaldsen, Rome
Franz Heinrich, German, 1802–1890 · 1845

Marble relief fragment depicting athletic prizes
Artist not stated in the record · 2nd century CE

Cooper Union Museum Lace Study Card
Artist not stated in the record · 19th century

Marble relief fragment with the head of a youth
Artist not stated in the record · 1st quarter of 5th century BCE

Mortar
Artist not stated in the record

Marble relief fragment with the head of Medea
Artist not stated in the record · 1st–2nd century CE

Lateral stretcher from the base of a funerary couch with Sogdian musicians and a dancer
Artist not stated in the record · 550-577

Ten marble fragments of the Great Eleusinian Relief
Artist not stated in the record · ca. 27 BCE–14 CE

Design for a Pedestal and a Bowl, Intended for Execution in White and Rose Marbles for Marie Antoinette at St. Cloud
Unknown · 1780–1785

Marble relief fragment with scenes from the Trojan War
Artist not stated in the record · 1st half of 1st century CE

Section of wall, salon Louis XIII, Palace of Fontainebleau, France
Frederick Marschall · ca. 1885

Marble relief fragment with the head of Mars
Artist not stated in the record · early 3rd century CE

Section of wall, Escalier de la cour ovale, Palace of Fontainebleau, France
Frederick Marschall · ca. 1885
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. 2404 matched · 24 examined · 0 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. 47435 matched · 40 examined · 25 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 2026-08-26 22:58 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.