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. 17 shown for “Painter of the Berlin Hydria” — 64 records examined, 35 dropped by the rights gate.
Archives queried 2026-09-02 13:44 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 calyx-krater (bowl for mixing wine and water)
Painter of the Berlin Hydria · ca. 460–450 BCE
Hydrias vithersi
Artist not stated in the record
Terracotta hydria (water jar)
Troilos Painter · ca. 490 BCE
Hydrias canescens
Artist not stated in the record
Terracotta amphora (jar)
Berlin Painter · ca. 490 BCE
Hydrias vitripuncta
Artist not stated in the record
Terracotta hydria: kalpis (water jar)
Berlin Painter · ca. 490 BCE
Apanteles hydriae
Artist not stated in the record · 10 Aug 1914
Terracotta hydria: kalpis (water jar)
Berlin Painter · ca. 500 BCE
Berlin Wall fragment, Berlin, Germany, 1961
Artist not stated in the record · 1989
Terracotta lekythos (oil flask)
Berlin Painter · ca. 480 BCE
Terracotta hydria (water jar)
Iliupersis Painter · ca. 375–350 BCE
Terracotta Panathenaic prize amphora
Euphiletos Painter · ca. 530 BCE
The Brandenburg Gate
Carl von Scheidt · 1816
Terracotta neck-amphora (jar)
Painter of the Cambridge Hydria · ca. 540 BCE
Hydria
Creusa Painter · ca. 400–375 BCE
Terracotta hydria (water jar)
Hesperides Painter · early 4th century 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. 1112 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. 2988066 matched · 40 examined · 35 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.5 shown
These figures describe the pass run at 2026-09-02 13:44 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.