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 “Christian Heinrich Ingermann” — 64 records examined, 38 dropped by the rights gate.
Archives queried 2026-08-28 17:43 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Pair of royal German silver four-light candelabra
Christian Heinrich Ingermann · 1747
Der Musterreiter (Travelling Salesman)
Artist not stated in the record · 1825
Crossbow of Count Ulrich V of Württemberg (1413–1480)
Heinrich Heid von Winterthur · dated 1460
Adolph Heinrich Joseph Sutro
Unidentified Artist · c. 1880
At the Edge of the Forest
August Heinrich · ca. 1820
Matin Heinrich Klaproth
Bristol-Myers Squibb Company
Two Men before a Waterfall at Sunset
Johan Christian Dahl · 1823
Stove
David II Pfau · ca. 1684–85
Clarinet in C
Heinrich Christian Eisenbrandt · before 1850
The Jabach Family
Charles Le Brun · ca. 1660
![Allgemeines historisches Taschenbuch, oder Abriss der merkwürdigsten neuen Welt-Begebenheiten: enthaltend für 1784 die Geschichte der Revolution von Nord-America [General historical pocketbook, summarizing noteworthy world news of 1784, with a History of the Revolution in North America], by Matthias Christian Sprengel](/_next/image?url=https%3A%2F%2Fimages.metmuseum.org%2FCRDImages%2Fdp%2Fweb-large%2FDP-12996-01.jpg&w=3840&q=75)
Allgemeines historisches Taschenbuch, oder Abriss der merkwürdigsten neuen Welt-Begebenheiten: enthaltend für 1784 die Geschichte der Revolution von Nord-America [General historical pocketbook, summarizing noteworthy world news of 1784, with a History of the Revolution in North America]
Matthias Christian Sprengel · 1784–87
Jousting Armor (Rennzeug) and Matching Half-Shaffron
Artist not stated in the record · ca. 1580–90
The Death of Socrates
Jacques Louis David · 1787
Two Men Contemplating the Moon
Caspar David Friedrich · ca. 1825–30
Wheellock Gun Made for the Bodyguard of the Prince-Elector of Saxony
Artist not stated in the record · dated 1589
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. 96 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. 21400 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 2026-08-28 17:43 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.