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 “German postcard from World War I” — 64 records examined, 18 dropped by the rights gate.
Archives queried 2026-08-31 23:16 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Christ Blessing, Surrounded by a Donor Family
German Painter · ca. 1573–82
German postcard from World War I
Artist not stated in the record · March 6, 1919
Armor of Emperor Ferdinand I (1503–1564)
Kunz Lochner · dated 1549
French postcard from World War I
Artist not stated in the record · c. 1918
Storing up Manna
Friedrich Brunner · 1497–99
YMCA postcard from World War I
Artist not stated in the record · c. 1918
Gathering Manna
Friedrich Brunner · 1497–99
World War I postcard
Artist not stated in the record · February 11, 1919
The Visitation
Master Heinrich of Constance · ca. 1310–20
POW postcard
Artist not stated in the record · 1945
Plaque with Christ Receiving Magdeburg Cathedral from Emperor Otto I
Artist not stated in the record · ca. 962–968
Photographic postcard of two WWI soldiers
Unidentified · 1918-1919
African King from an Adoration Group
Artist not stated in the record · before 1489
Photographic postcard of WWI soldiers
Unidentified · 1917-1918
Picquigny
Frits Thaulow · 1899
Photographic postcard of WWI soldier
Unidentified · 1918-1919
Settee (one of a pair) (part of a set)
Johann Michael Bauer · ca. 1763–64
Photographic postcard of WWI soldier
Unidentified · 1917-1918
Double-Barreled Wheellock Pistol Made for Emperor Charles V (reigned 1519–56)
Peter Peck · ca. 1540–45
POW postcard
Artist not stated in the record · 1945
Paten
Artist not stated in the record · ca. 1230–50
Photographic postcard of WWI soldier with rifle
Unidentified · 1918-1930
Virgin and Child
Artist not stated in the record · ca. 1425–30
American postcard from World War I
Artist not stated in the record · c. 1918
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. 1381 matched · 24 examined · 6 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. 589512 matched · 40 examined · 12 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 2026-08-31 23:16 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.