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. 15 shown for “Twenty-sided die (icosahedron) with faces inscribed with Greek letters” — 64 records examined, 37 dropped by the rights gate.
Archives queried 2026-09-04 10:40 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Twenty-sided die (icosahedron) with faces inscribed with Greek letters
Artist not stated in the record · ca. 2nd century BCE–4th century CE

Design for Monument
Felice Giani, Italian, 1758–1823 · ca. 1800

Twenty-sided die (icosahedron) with faces inscribed with Greek letters
Artist not stated in the record · ca. 2nd century BCE–4th century CE

Saint Basil and Saint Gregory
Artist not stated in the record · 1665-1700

Twenty-sided die (icosahedron) with faces inscribed with Greek letters
Artist not stated in the record · ca. 2nd century BCE–4th century CE

Advertisement for the "National Union of the United Brewery Workmen"
Whitehead & Hoag Company · 1900–10

Portrait of a Woman, Possibly a Nun of San Secondo; (verso) Scene in Grisaille
Jacometto (Jacometto Veneziano) · ca. 1485–95

Faience polyhedron inscribed with letters of the Greek alphabet
Artist not stated in the record · 2nd–3rd century CE

Standing Figure with Jeweled Headdress
Artist not stated in the record · 12th–early 13th century

Bronze hydria (water jar)
Artist not stated in the record · mid-5th century BCE

Francesco d'Este (born ca. 1429, died after 1486)
Rogier van der Weyden · ca. 1460

View of Toledo
El Greco (Domenikos Theotokopoulos) · ca. 1599–1600

Display dish with Charles II (1630–1685) in a tree
Thomas Toft · ca. 1680

The Adoration of the Shepherds
El Greco (Domenikos Theotokopoulos) · ca. 1605–10

Aristotle with a Bust of Homer
Rembrandt (Rembrandt van Rijn) · 1653
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. 226 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. 360168 matched · 40 examined · 37 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.3 shown
These figures describe the pass run at 2026-09-04 10:40 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.