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. 23 shown for “Model for an altar” — 64 records examined, 3 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.
Model for an altar
Artist not stated in the record · ca. 1700–1730
Altar Design
D. Antoine Pierretz, French, active 1647 · 1647-55
The Crucifixion
Master of the Berswordt Altar · ca. 1400
Altar Design
D. Antoine Pierretz, French, active 1647 · 1647-55
The Flagellation
Master of the Berswordt Altar · ca. 1400
Altar
Giuseppe Valadier, Italian, 1762–1839 · 1775
Model of a Porch and Garden
Artist not stated in the record · ca. 1981–1975 B.C.
Design for an Altar
Gilles-Marie Oppenord, French, 1672–1742 · 1749-1761
Altar coffer
Artist not stated in the record · 17th–18th century
Design for an Altar
Filippo Marchionni, Italian, 1732–1805 · ca. 1780
Altar
Artist not stated in the record · ca. 232
Design for an Altar
Gilles-Marie Oppenord, French, 1672–1742 · 1749-1761
Francesco I de' Medici, grand duke of Tuscany
Giambologna · modeled 1585–87, cast ca. 1611
Project for an altar with alternative suggestions
Artist not stated in the record · 1775–1780
Trotting horse
Giambologna · probably 1587–91
Design for an Altar
Gilles-Marie Oppenord, French, 1672–1742 · 1749-1761
Hercules and the Erymanthian boar
Giambologna · Late 17th or 18th century
Design for an Altar
Gilles-Marie Oppenord, French, 1672–1742 · 1749-1761
Two wall sconces (Bras de cheminée)
Jean-Claude Duplessis · ca. 1761
Design for an Altar
Gilles-Marie Oppenord, French, 1672–1742 · 1749-1761
Three-light candelabra (candélabre or girandole) (one of a pair)
Johann Joachim Kändler · ca. 1750
Design for an Altar
Filippo Marchionni, Italian, 1732–1805 · ca. 1780–90
Project for an altar: intended to be executed in colored marbles
Artist not stated in the record · ca. 1750
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. 3961 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. 523468 matched · 40 examined · 3 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 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.