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. 23 shown for “Painter of the Villa Giulia 1664” — 64 records examined, 29 dropped by the rights gate.
Archives queried 2026-08-27 17:15 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Terracotta skyphos (deep drinking cup)
Painter of the Villa Giulia 1664 · mid-4th century BCE

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

Terracotta rim fragment of a kylix (drinking cup)
Villa Giulia Painter · 460–450 BCE

Claude's Villa and St. Peter's, Rome, Italy
Frederic Edwin Church, American, 1826–1900 · December 1868 - April 1869

Terracotta lekythos (oil flask)
Villa Giulia Painter · ca. 460 BCE

Plate Depicting the Villa Borghese, from a "Topographical" Dinner or Dessert Service ("A Vedute")
Doccia Porcelain Factory, Italian, established 1735 · ca. 1810–1820

Terracotta bell-krater (bowl for mixing wine and water)
Villa Giulia Painter · ca. 460–450 BCE

Claphe giulia
Artist not stated in the record

Terracotta hydria: kalpis (water jar)
Villa Giulia Painter · ca. 460–450 BCE

Schizothrix calcicola Gomont
Artist not stated in the record · 31 Dec 1914

Terracotta hydria: kalpis (water jar)
Villa Giulia Painter · ca. 460–450 BCE

Epilobium sp.
Artist not stated in the record · 30 Jul 1865

Terracotta stamnos (jar) with lid
Villa Giulia Painter · ca. 450 BCE

Calothrix pannosa C. Agardh
Artist not stated in the record · Jun 1827

Cubiculum (bedroom) from the Villa of P. Fannius Synistor at Boscoreale
Artist not stated in the record · ca. 50–40 BCE

Calothrix semiplena C. Agardh
Artist not stated in the record · Jun 1827

The Adoration of the Shepherds
Andrea Mantegna · shortly after 1450

Oscillatoria australis C. Agardh
Artist not stated in the record · Jun 1827

Wall painting: Polyphemus and Galatea in a landscape, from the imperial villa at Boscotrecase
Artist not stated in the record · last decade of the 1st century BCE

Calothrix luteofusca C. Agardh
Artist not stated in the record

Terracotta lekythos (oil flask)
Eretria Painter · ca. 420 BCE

Mecenas Villa
Artist not stated in the record · n.d.

Terracotta amphora (jar)
Berlin Painter · ca. 490 BCE
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. 384 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. 2996711 matched · 40 examined · 29 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.11 shown
These figures describe the pass run at 2026-08-27 17:15 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.