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. 13 shown for “Seal Amulet in the Shape of a Hippopotamus” — 64 records examined, 39 dropped by the rights gate.
Archives queried 2026-08-27 03:30 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Seal Amulet in the Shape of a Hippopotamus
Artist not stated in the record · ca. 1550–1300 BCE

Grand Army of the Republic medal owned by Marquis Peterson
Artist not stated in the record · 1866-1896

Hippopotamus
Artist not stated in the record · ca. 1550–1080 BCE

Seal
Jacob Boelen · ca. 1704

Seal Amulet Decorated with a Hippopotamus
Artist not stated in the record · ca. 1386–1347 BCE

Statuette of a hippo goddess, probably Taweret
Artist not stated in the record · 332–30 BCE

Amulet in the Shape of a Heart
Artist not stated in the record · 664–30 BCE

Standing Hippopotamus
Artist not stated in the record · ca. 1810–1700 B.C.

Menat necklace from Malqata
Artist not stated in the record · ca. 1386–1347 BCE

Seal Amulet in the Shape of a Cowry Shell
Artist not stated in the record · ca. 1386–1347 BCE

Hippopotamus figurine
Artist not stated in the record · ca. 780–525 BCE

Hippopotamus-head amulet
Artist not stated in the record · ca. 1981–1802 B.C.

Seal amulet in the shape of hedgehog
Artist not stated in the record · 664–380 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. 954 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. 7483533 matched · 40 examined · 39 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.1 shown
These figures describe the pass run at 2026-08-27 03:30 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.