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. 12 shown for “Head of a Hippopotamus” — 24 records examined, 3 dropped by the rights gate.
Archives queried 2026-08-26 18:32 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.Smithsonian Open Access: HTTP 429 from api.si.edu. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.
Head of a Hippopotamus
Artist not stated in the record · ca. 1386–1347 BCE
Hippopotamus
Artist not stated in the record · ca. 1550–1080 BCE
Head
Temne or Bullom artist(s) · 12th–16th century
Hippopotamus ("William")
Artist not stated in the record · ca. 1961–1878 B.C.
Statue of Kneeling Captive
Artist not stated in the record · ca. 2246–2152 BCE
Buddha
Artist not stated in the record · 3rd century
Hippopotamus figurine
Artist not stated in the record · ca. 780–525 BCE
Bust of a Bodhisattva
Artist not stated in the record · ca. 4th–5th century
Marble head of a Ptolemaic queen
Artist not stated in the record · ca. 270–250 BCE
Artist's Painting of a Hippopotamus
Artist not stated in the record · ca. 1473–1458 BCE
Bird Head
Artist not stated in the record · Date unknown
Bodhisattva Avalokiteshvara
Artist not stated in the record · second half of the 7th century
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. 30959 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. HTTP 429 from api.si.edu. No records from this archive are shown for this query.Unavailable
These figures describe the pass run at 2026-08-26 18:32 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.