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. 13 shown for “Une Mare (Environs de Rossilon)” — 41 records examined, 4 dropped by the rights gate.
Archives queried 2026-09-06 01:45 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 Forest in Winter at Sunset
Théodore Rousseau · ca. 1846–67
Une Mare (Environs de Rossilon)
Artist not stated in the record · 1867
Ludwigia octovalvis (Jacq.) P.H. Raven
Artist not stated in the record · 4 Apr 1979
Struchium sparganophorum (L.) Kuntze
Artist not stated in the record · 11 Nov 1987
Un Vieux Port de la Normandie (An Old Port of Normandy)
Artist not stated in the record · ca. 1880
Azolla imbricata (Roxb.) Nakai
Artist not stated in the record · 4 Sep 1954
Juncus sp.
Artist not stated in the record · 28 Jul 1979
Pistia stratiotes L.
Artist not stated in the record · Jul 1887
Calamagrostis neglecta subsp. inexpansa (A. Gray) Tzvelev
Artist not stated in the record · 16 Aug 1939
Echinochloa stagnina (Retz.) P. Beauv.
Artist not stated in the record · 1 Oct 1936
Salix tetrasperma Roxb.
Artist not stated in the record · 6 Nov 1938
Sacciolepis interrupta (Willd.) Stapf
Artist not stated in the record · 4 Oct 1936
Ichnanthus tenuis (J. Presl) Hitchc. & Chase
Artist not stated in the record · 21 Feb 2005
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. 1 matched · 1 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.1 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 619221 matched · 40 examined · 4 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 01:45 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.