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. 15 shown for “Carl Friedrich Thienpondt” — 64 records examined, 38 dropped by the rights gate.
Archives queried 2026-09-05 07:05 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
A Sea Nymph
Carl Friedrich Thienpondt · ca. 1760
Aristida purpurascens var. alabamensis Trin. & Rupr.
Artist not stated in the record
Diana
Carl Friedrich Thienpondt · ca. 1760
Elionurus ciliaris Kunth
Artist not stated in the record
Gothic Windows in the Ruins of the Monastery at Oybin
Carl Gustav Carus · ca. 1828
Kewa caespitosa (Friedrich) Christenh.
Artist not stated in the record · 25 Jun 2006
The Banishment of Hagar
Johann Friedrich Overbeck · 1839–41
Schloss Milkel in Moonlight
Carl Gustav Carus · ca. 1833–35
Partisan of the Swiss Guard of Friedrich August of Saxony (reigned 1694–1733)
Artist not stated in the record · ca. 1725
Two Men before a Waterfall at Sunset
Johan Christian Dahl · 1823
Portrait of Johann Heinrich Friedrich Carl Witte
Samuel Amsler · 1819
Armchair
Karl Friedrich Schinkel · ca. 1828
Couple Entering Building, with Attendant (from Cropsey Album)
Carl Friedrich Heinrich Werner · 1850
Italian Lake Scene with Villa (from Cropsey Album)
Carl Friedrich Heinrich Werner · 1849
Grand Piano
Friedrich Carl Wilhelm Lemme · 1797
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. 122 matched · 24 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. 44667 matched · 40 examined · 37 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.3 shown
These figures describe the pass run at 2026-09-05 07:05 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.