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. 22 shown for “Chalcedony intaglio: Head of Jupiter Ammon” — 64 records examined, 28 dropped by the rights gate.
Archives queried 2026-09-06 03:31 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Chalcedony intaglio: Head of Jupiter Ammon
Artist not stated in the record · 1st–3rd century CE
Ornament Design, Urns and Cameo with Sacrifice to Jupiter Ammon
Michel Angelo Pergolesi, Italian, active ca. 1760–1801 · 1776
Jewish Woman of Algiers
Charles-Henri-Joseph Cordier · 1862
Jupiter and Hebe, Apollo and Terspsichore.
Felice Giani, Italian, 1758–1823 · 1815
Chalcedony oval gem
Artist not stated in the record · 2nd century BCE
Ovis ammon polii
Artist not stated in the record · 20 May 1894
Set of jewelry
Artist not stated in the record · early 5th century BCE
Deeds of Jupiter, for a Ceiling
Felice Giani, Italian, 1758–1823 · 1812
Sardonyx cameo portrait of the Emperor Augustus
Artist not stated in the record · ca. 41–54 CE
Anatomical Sketches of Heads and Torsos
Frederic Edwin Church, American, 1826–1900 · 1877–80
Woman from the French Colonies
Charles-Henri-Joseph Cordier · 1861
Judith with the Head of Holofernes
Jan van der Straet, called Stradanus, Flemish, 1523–1605 · ca. 1587 – 1605
Jasper intaglio: Harpocrates riding a lion
Artist not stated in the record · ca. 2nd–3rd century CE
Ovis ammon ammon
Artist not stated in the record · 6 Jul 1912
Carnelian ring stone
Artist not stated in the record · 3rd–2nd century BCE
Carnelian ring stone
Artist not stated in the record · ca. 1st century BCE–3rd century CE
Gold ring with a carnelian intaglio
Artist not stated in the record · 3rd century BCE
Tureen Design, from Dessins d'orfèvrerie (Designs for Metalwork)
Léonard Thiry, Flemish, 1550 · 1540–1560
Gold ring with onyx intaglio
Artist not stated in the record · late 2nd–early 3rd century CE
Ammon Begs the King to Summon his Sister Thamar
Martin Van Heemskerk, Netherlandish, 1498 - 1574 · 1559
Carnelian ring stone
Aspasios · ca. 2nd half of the 2nd century CE
Soffits and Vases, Plate 6 from "Cahier de Trophées, Soffites et Vases," Parte IX, Cahier I
Richard de Lalonde, French, active 1780–96 · ca. 1780
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. 55 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. 2882586 matched · 40 examined · 27 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 2026-09-06 03:31 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.