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. 18 shown for “Charles M. Hughes's 1881 Hinge Patent Model” — 47 records examined, 26 dropped by the rights gate.
Archives queried 2026-09-01 04:04 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 Natchez
Eugène Delacroix · 1823–24 and 1835
Charles M. Hughes's 1881 Hinge Patent Model
Artist not stated in the record · 1881
Young Lady in 1866
Edouard Manet · 1866
Benjamin Allen's 1875 Folding Seat Hinge Patent Model
Artist not stated in the record · 1875
Antoine Laurent Lavoisier (1743–1794) and Marie Anne Lavoisier (Marie Anne Pierrette Paulze, 1758–1836)
Jacques Louis David · 1788
1838 Angell's Patent Model of a Loom Temple
Artist not stated in the record · 1838-10-19
The Death of Socrates
Jacques Louis David · 1787
Morris Lancaster's 1876 School Desk and Seat Hinge Improvement Patent Model
Artist not stated in the record · 1876
The Brioche
Edouard Manet · 1870
Frank G. Johnson's 1881 School Desk and Seat Patent Model
Artist not stated in the record · 1881
Majas on a Balcony
Goya (Francisco de Goya y Lucientes) · ca. 1800–1810
Charles J. Higgins's 1871 School Desk and Seat Patent Model
Artist not stated in the record · 1871
Albert E. Roberts's 1870 School Desk and Seat Patent Model
Artist not stated in the record · 1870
Charles H. Presbrey's 1873 School Desk and Seat Patent Model
Artist not stated in the record · 1873
Domestic Boiler Patent Model
Artist not stated in the record · 1874-04-28
Demonstration Model, Life Raft, 1881
Artist not stated in the record · ca 1881
Frederick Everhart McKinley's 1881 School Desk and Seat Patent Model
Artist not stated in the record · 1881
Invention for Improvement in Processes of Coloring Photographs
Pennington, Susan M. H. · ca 1878-07-09
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. 7 matched · 7 examined · 1 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.6 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 1375037 matched · 40 examined · 25 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 04:04 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.