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. 24 shown for “Adolphe Appian” — 55 records examined, 18 dropped by the rights gate.
Archives queried 2026-09-06 00:24 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 Old Castle of Collioure
Adolphe Appian · 1878
Etched copperplate "Landscape with Ducks" by Adolphe Appian
Adolphe Appian, French, 1818 - 1898 · 1877-1879
A Pond
Adolphe Appian · 1867
Bords du Ruisseau à Rossillon
Artist not stated in the record · 1867
Near the Rix (Ain)
Adolphe Appian · 1864
Une Moria à Bordiquier (Italie)
Artist not stated in the record · 1873
Near the Rix (Ain)
Adolphe Appian · 1864
Souvenir
Artist not stated in the record · ca. 1880
Barge on the Bank of a River
Adolphe Appian · 1865
Une Mare (Environs de Rossilon)
Artist not stated in the record · 1867
Village Street in Artemare (Ain)
Adolphe Appian · 1871
Un Rocher dans les Communaux de Rix (Ain)
Artist not stated in the record · 1862
The Springs of the Albarine (Ain)
Adolphe Appian · 1870
Cabane De Pecheurs (Cotes de l'Italie)
Artist not stated in the record · 1876
Costal Navigation Boats (Coast of Italy)
Adolphe Appian · 1874
Environs de Lyon
Artist not stated in the record · 1879
At the Gorge of Loup (Near Lyon)
Adolphe Appian · 1863
Environs de Carqueronne
Artist not stated in the record · 1882
The New Pond Near Creys (Isère)
Adolphe Appian · 1864
Une Moria a Bodiquier (Italie)
Artist not stated in the record · 1873
A Water Wheel in Bordighera (Italy)
Adolphe Appian · 1875
Le Port de San Remo
Artist not stated in the record · 1878
A Pond with a Fisherman along the River Ain
Adolphe Appian · 1868–70
A Villefranche-sur-Mer (Environs de Carqueiranne)
Artist not stated in the record · 1882
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. 15 matched · 15 examined · 1 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. 21461 matched · 40 examined · 17 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 2026-09-06 00:24 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.