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. 21 shown for “Fired clay jar sealing” — 64 records examined, 34 dropped by the rights gate.
Archives queried 2026-09-03 19:14 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Fired clay jar sealing
Artist not stated in the record · ca. 3100 B.C.

Five-Gallon Home Brew Jar
Unidentified · ca. 1880

Fired clay jar sealing with ostrich hieroglyphs
Artist not stated in the record · ca. 3100 B.C.

Jar with Bilateral Lug Handles
Unidentified · 20th century (pre-1974)

Jar
Teotihuacan artist(s) · 350–550 CE

Kyoto ware jar with design of phoenixes and paulownia crests
Artist not stated in the record · late 17th century

Jar with carp in lotus pond
Artist not stated in the record · mid-16th century

Clay Fire and Marine Insurance Company Fire Mark
unknown · 1856

Sealed Amphora Containing Oil
Artist not stated in the record · ca. 1491–1473 BCE

Clay Fire and Marine Insurance Company Fire Mark
unknown · 1856

Moon jar
Artist not stated in the record · second half 18th century

Jug with Lizard Handle
Unidentified · 20th century (pre-1974)

Cylinder seal and modern impression: hunting scene
Artist not stated in the record · ca. 2250–2150 BCE

Jug with Blue-on-Brown Glaze
Unidentified · 20th century (pre-1974)

Jar
Nonomura Ninsei · 1730

Pitcher with Blue-on-Brown Glaze
Unidentified · 20th century (pre-1974)

Proto-Cuneiform tablet with seal impressions: administrative account of barley distribution with cylinder seal impression of a male figure, hunting dogs, and boars
Artist not stated in the record · ca. 3100–2900 BCE

Double-handled Whiskey Jug
Unidentified · 20th century (pre-1974)

Jar with lid
Artist not stated in the record · 19th century

Painted Wide-Mouthed Jug
Artist not stated in the record · ca. 1473–1458 BCE

Prisoner jar
Artist not stated in the record · 200–800 CE
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. 198 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. 57444 matched · 40 examined · 31 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.9 shown
These figures describe the pass run at 2026-09-03 19:14 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.