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. 16 shown for “William A. Slaymaker's 1874 Opera Chair Patent Model” — 45 records examined, 20 dropped by the rights gate.
Archives queried 2026-09-01 13:15 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Rehearsal of the Ballet Onstage
Edgar Degas · ca. 1874
William A. Slaymaker's 1874 Opera Chair Patent Model
Artist not stated in the record · 1874
Portrait of a Young Man
Bronzino (Agnolo di Cosimo di Mariano) · 1530s
William A. Slaymaker's 1870 School Desk and Seat Patent Model
Artist not stated in the record · 1870
Madame Georges Charpentier (Marguerite-Louise Lemonnier, 1848–1904) and Her Children, Georgette-Berthe (1872–1945) and Paul-Emile-Charles (1875–1895)
Auguste Renoir · 1878
William P. Goolman's 1874 School Desk Patent Model fragment
Artist not stated in the record · 1874
Young Woman (La Servante)
Auguste Renoir · ca. 1875
William F. Spencer's 1876 School Desk and Seat Patent Model
Artist not stated in the record · 1876
George H. Grant's 1874 School Seat Patent Model
Artist not stated in the record · 1874
Patent model of a Feeding Apparatus for Card Presses
Clark, William M. · ca 1876
Joe V. Meigs' 1874 Desk and Seat Patent Model
Artist not stated in the record · 1874
Patent model for printers' quoins
Quail, William · ca 1874
Patent model for paper-ruling machine
Hickok, William O. · ca 1877
Crocker’s Patent Model of a Hot-Air Furnace - 1874
Artist not stated in the record · 1874
Herbert L. Andrews' 1868 School Desk Patent Model Improvement
Artist not stated in the record · 1868
John L. Riter's 1873 School Desk and Seat Patent Model
Artist not stated in the record · 1873
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. 5 matched · 5 examined · 1 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.4 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 1976264 matched · 40 examined · 19 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 2026-09-01 13:15 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.