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. 22 shown for “Class of Athens 581” — 64 records examined, 31 dropped by the rights gate.
Archives queried 2026-08-28 18:22 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 lekythos (oil flask)
Class of Athens 581.1 · ca. 490 BCE
Athene cunicularia hypugaea
Artist not stated in the record · 11 Mar 1884
Lekythos
Class of Athens 581 · early 5th century BCE
Calidris minutilla
Artist not stated in the record · 27 Sep 1929
Lekythos
Class of Athens 581 · early 5th century BCE
Bryum bicolor Dicks.
Artist not stated in the record · 27 Apr 1953
Lekythos
Class of Athens 581 · early 5th century BCE
Leucobryum glaucum (Hedw.) Ångstr.
Artist not stated in the record · 16 Feb 1953
Lekythos
Class of Athens 581 · early 5th century BCE
Dicranum scoparium Hedw.
Artist not stated in the record · 16 Feb 1953
Lekythos
Class of Athens 581 · 6th–5th century BCE
Dicranum fulvum Hook.
Artist not stated in the record · 30 Mar 1953
Lekythos
Class of Athens 581 · 1st quarter of the 5th century BCE
Bouquet holder, wood, contemporary
Mark J. Burhans · Twentieth century
Terracotta hydria (water jar)
Class of Hamburg 1917.477 · ca. 510–500 BCE
Burrowing Owl
Artist not stated in the record · 2010:03:19
Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
Burrowing Owl
Artist not stated in the record · 2016:02:19
Oinochoe
Class of the Oxford Siren-Jug · last quarter of the 6th century BCE
View of the Acropolis from Lycabettus Hill, Athens, Greece
Frederic Edwin Church, American, 1826–1900 · April 1869
Marble head of a horse
Artist not stated in the record · 2nd half of 6th century BCE
Arm Defense
Artist not stated in the record · ca. 1450–70
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. 43 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. 2863909 matched · 40 examined · 30 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.10 shown
These figures describe the pass run at 2026-08-28 18:22 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.