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. 20 shown for “Pithophora varia N.Wille in Collins et al.” — 54 records examined, 6 dropped by the rights gate.
Archives queried 2026-09-10 20:54 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Don Gaspar de Guzmán (1587–1645), Count-Duke of Olivares
Juan Bautista Martínez del Mazo · ca. 1636 or later
Pithophora varia N.Wille in Collins et al.
Artist not stated in the record
Cardinal Fernando Niño de Guevara (1541–1609)
El Greco (Domenikos Theotokopoulos) · ca. 1600
Pithophora varia N.Wille in Collins et al.
Artist not stated in the record
Elizabeth Farren (born about 1759, died 1829), Later Countess of Derby
Sir Thomas Lawrence · 1790
Microspora loefgrenii f. minor N.Wille in Collins et al.
Artist not stated in the record · 28 May 1899
Joan of Arc
Jules Bastien-Lepage · 1879
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 5 Mar 1939
Irises
Vincent van Gogh · 1890
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 18 Apr 1971
The Horse Fair
Rosa Bonheur · 1852–55
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 9 Apr 1966
Boy with a Sword
Edouard Manet · 1861
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 25 Oct 1973
Derick Berck of Cologne
Hans Holbein the Younger · 1536
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 5 Mar 1939
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 24 Oct 1976
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 14 Feb 1976
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 24 Apr 1958
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · Transcribed d/m/y: 22/11/91
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. 14 matched · 14 examined · 6 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.8 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 7462678 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 2026-09-10 20:54 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.