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. 17 shown for “Photograph of US Navy mail call” — 64 records examined, 19 dropped by the rights gate.
Archives queried 2026-09-09 22:20 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 and the Two Thieves Crucified
Michelangelo Buonarroti · ca. 1560–70
Photograph of US Navy mail call
Artist not stated in the record · 1944
Christ's Descent into Hell
Hieronymus Bosch
US Navy postal officer’s album page 21
Artist not stated in the record · 1945
Picquigny
Frits Thaulow · 1899
V-Mail facsimile
Artist not stated in the record · December 17, 1943
Tiburcio Pérez y Cuervo (1785/86–1841), the Architect
Goya (Francisco de Goya y Lucientes) · 1820
US Navy postal officer’s album
Artist not stated in the record · 1945
A Book Peddler
Master of the Canesso Peddler · ca. 1670–90
US Navy postal officer’s album page 3
Artist not stated in the record · 1945
US Navy postal officer's fleet post office map in pencil
Artist not stated in the record · 1945
US Navy certificate of satisfactory service
Artist not stated in the record · 1945
US Navy postal officer’s album page 15
Artist not stated in the record · 1945
US Navy postal officer’s album page 17
Artist not stated in the record · 1945
US Navy postal officer’s album page 32
Artist not stated in the record · 1945
US Navy postal officer’s album page 31
Artist not stated in the record · 1945
US Navy postal officer’s album page 26
Artist not stated in the record · 1945
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. 164 matched · 24 examined · 19 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.5 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 2939266 matched · 40 examined · 0 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 2026-09-09 22:20 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.