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 “Master of the Castello Nativity” — 64 records examined, 27 dropped by the rights gate.
Archives queried 2026-08-26 22:40 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Portrait of a Woman
Master of the Castello Nativity · probably 1450s

Del Castello dell'Aqua Giulia, plate IV from "Le Rovine del Castello dell’Acqua Giulia (The Ruins of the Fountainhead of the Aqua Giulia)
Giovanni Battista Piranesi, Italian, 1720–1778 · 1761

Moses and Aaron before Pharaoh: An Allegory of the Dinteville Family
Master of the Dinteville Allegory · 1537

Aeonium castello-paivae Bolle
Artist not stated in the record · Transcribed d/m/y: 30/9/65

Saint Dominic in Penitence
Filippo Tarchiani · ca. 1607

Project for a Fresco in the Dome of the Cathedral in Citta di Castello
Tommaso Maria Conca, Italian, 1734 – 1822 · 1789–90

Triptych with the Nativity and the Annunciation
Master of the Orléans Triptych · late 19th–early 20th century

Aeonium castello-paivae Bolle
Artist not stated in the record · 1951

The Crucifixion
Master of the Codex of Saint George · ca. 1330–35

Potamotrygon yepezi Castex & Castello
Artist not stated in the record · 11 Mar 1943

The Death of the Virgin (The Dormition)
Tilman Heysacker · late 15th century

Potamotrygon yepezi Castex & Castello
Artist not stated in the record · 16 Mar 1942

Nativity
Master IQV · ca. 1543

View of S. Ferdinando in Castello and the Quarter Around and Beyond S. Spirito, Plate 5 from "Scelta di XXIV Vedute delle principali contrade, piazze, chiese, e palazzi della Città di Firenze"
Artist not stated in the record · ca. 1743

Nativity
Alsatian Master · 16th century

Potamotrygon yepezi Castex & Castello
Artist not stated in the record · 26 Feb 1942

The Nativity and Circumcision of Christ
Workshop of the Master of the High Foreheads · probably early 16th century

Potamotrygon yepezi Castex & Castello
Artist not stated in the record · 1 Mar 1942

The Last Judgment; The Virgin and Child with a Bishop-Saint and Saint Peter Martyr; The Crucifixion; The Glorification of Saint Thomas Aquinas; The Nativity
Master of the Dominican Effigies · ca. 1325

Potamotrygon yepezi Castex & Castello
Artist not stated in the record · 2 Mar 1942

The Adoration of the Christ Child
Master of Frankfurt · possibly 1496–1502

Potamotrygon yepezi Castex & Castello
Artist not stated in the record · 21 Feb 1942

The Nativity
Puccio di Simone · ca. 1350

Potamotrygon yepezi Castex & Castello
Artist not stated in the record · 6 Mar 1942
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. 588 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. 2986834 matched · 40 examined · 26 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 22:40 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.