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. 21 shown for “Fishtail knife” — 49 records examined, 11 dropped by the rights gate.
Archives queried 2026-09-03 19:41 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Fishtail Knife
Artist not stated in the record · ca. 3900–3650 BCE
Calothrix parietina
Artist not stated in the record · 29 Jul 1942
Fishtail Knife
Artist not stated in the record · ca. 3900–3650 BCE
Ondatra zibethicus zibethicus
Artist not stated in the record · 28 Jul 1942
Fishtail Knife
Artist not stated in the record · ca. 3900–3500 BCE
Anacystis dimidiata
Artist not stated in the record · 31 Jul 1942
Fishtail Knife
Artist not stated in the record · ca. 3300–2900 BCE
Poa secunda J. Presl
Artist not stated in the record · 8 May 1958
Fishtail Knife
Artist not stated in the record · ca. 3850–2960 BCE
Design for the Base of the Monument to Andrea Doria
Baccio Bandinelli, Italian, 1488-1560 · mid-1530s
Fishtail Knife
Artist not stated in the record · ca. 3650–3300 BCE
Designs for Cartouches
Carlo Marchionni, Italian, 1702–1786 · mid- 18th century
Fishtail Knife
Artist not stated in the record · ca. 3650–3300 BCE
Design for a Ewer
Auguste Bergeret, French · ca. 1715
Fishtail knife
Artist not stated in the record · ca. 3900–3650 BCE
Project for a Fountain
Artist not stated in the record · ca. 1800
Fragment of a fishtail knife
Artist not stated in the record · ca. 4500–4000 BCE (?)
Design for a Fountain
Artist not stated in the record · 1790
Design for Stucco Decorations of Panels
Artist not stated in the record · mid- 18th century
Door Knocker and Metal Purse Frames
Giuseppe Barberi, Italian, 1746–1809 · ca. 1780
Scytonema hofmannii C. Agardh ex Bornet & Flahault
Artist not stated in the record · 10 Jul 1939
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. 9 matched · 9 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.9 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 14313 matched · 40 examined · 11 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.12 shown
These figures describe the pass run at 2026-09-03 19:41 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.