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 “Luis Alvarez Catalá” — 64 records examined, 6 dropped by the rights gate.
Archives queried 2026-09-01 10:17 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 Cardinal's Reception
Luis Alvarez Catalá · 1881

Stachys coccinea Ortega
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

Cardinal Fernando Niño de Guevara (1541–1609)
El Greco (Domenikos Theotokopoulos) · ca. 1600

Stevia elatior Kunth
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

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

Hypericum pauciflorum Kunth
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

Manuel Osorio Manrique de Zuñiga (1784–1792)
Goya (Francisco de Goya y Lucientes) · 1787–88

Sedum retusum Hemsl.
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

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

Peperomia campylotropa A.W. Hill
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

Christ Carrying the Cross
El Greco (Domenikos Theotokopoulos) · ca. 1577–87

Pleopeltis polylepis (Roem. ex Kunze) T. Moore
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

The Adoration of the Shepherds
El Greco (Domenikos Theotokopoulos) and Workshop · ca. 1612–14

Polypodium subpetiolatum Hook.
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

Segment of a Crozier Shaft
Artist not stated in the record · late 12th century

Aleuritopteris farinosa (Forssk.) Fée
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

Sculpture of a Wise Man (from a Group with the Adoration of the Magi)
Artist not stated in the record · ca. 1175–1200

Myriopteris notholaenoides (Desv.) Grusz & Windham
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

Virgin and Child (from an group with the Adoration of the Magi)
Artist not stated in the record · ca. 1175–1200

Tigridia multiflora (Baker) Ravenna
Artist not stated in the record · 21 Jul 1934 to 30 Jul 1934

Wise Man (from a group with the Adoration of the Magi)
Artist not stated in the record · ca. 1175–1200

Salvia patens Cav.
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934

Tomb of Ermengol VII, Count of Urgell
Artist not stated in the record · ca. 1300–1350

Salvia puberula Fernald
Artist not stated in the record · 30 Jul 1934 to 31 Jul 1934
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. 33 matched · 24 examined · 3 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. 30466 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 2026-09-01 10:17 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.