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 “Carl Ludwig Fernow” — 64 records examined, 5 dropped by the rights gate.
Archives queried 2026-09-06 13:16 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 Cemetery at Pronoia near Nauplia
Carl Rottmann · ca. 1841–47
Carl Ludwig Fernow
Artist not stated in the record
Harlequin
Höchst Manufactory · ca. 1750–53
Rubus gracilis Roxb.
Artist not stated in the record · Transcribed d/m/y: 23/7/97
Carl Ernst Christoph Hess
Ludwig Emil Grimm
Sphaeralcea laxa Wooton & Standl.
Artist not stated in the record · Aug 1896
A View of Rome from the Palatine
Carl Ludwig Frommel · 1813–17 (?)
Croton punctatus Jacq.
Artist not stated in the record · 28 Feb 1890
Landscape Near Tivoli
Carl Ludwig Frommel · 1800–1863
Sphaeralcea rusbyi A. Gray
Artist not stated in the record · Aug 1896
Grand Piano
Carl Bechstein · ca. 1893
Sphaeralcea subhastata var. pumila (Wooton & Standl.) Kearney
Artist not stated in the record · Aug 1896
Household Stories from the Collection of the Brothers Grimm
Jacob Ludwig Carl Grimm · 1882
Castanea pumila (L.) Mill.
Artist not stated in the record · 9 Sep 1894
Portrait of Maria Theresia, Queen of Saxony
Ludwig Theodor Zöllner · 1829
Fraxinus velutina Torr.
Artist not stated in the record · 1896
Saint Elizabeth Carrying Her First-born Son to the Church
Ludwig Emil Grimm · ca. 1850
Croton punctatus Jacq.
Artist not stated in the record · 28 Feb 1890
Christenfreude in Lied und Bild
Adrian Ludwig Richter · 1855
Sidalcea neomexicana A. Gray subsp. neomexicana
Artist not stated in the record · 21 Jul 1896
Portrait of Maria Theresia, Queen of Saxony
Ludwig Theodor Zöllner · after 1829
Thelypodium sp.
Artist not stated in the record · 21 Jul 1896
Church Interior
Johann Ludwig Ernst Morgenstern · 1791
Mahonia trifoliolata (Monic.) Fedde
Artist not stated in the record · 24 Feb 1898
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. 73 matched · 24 examined · 2 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. 42814 matched · 40 examined · 3 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 13:16 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.