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 “Piper umbellatum L.” — 64 records examined, 9 dropped by the rights gate.
Archives queried 2026-09-05 09:25 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Jug with portraits of Emperor Charles V (1500–1558) and Johann Friedrich the Magnanimous (1503–1554), elector of Saxony
Paul Preuning · ca. 1547–50
Piper umbellatum L.
Artist not stated in the record
Study for a Portrait of a Woman
Sir Peter Lely (Pieter van der Faes) · 1670s
Piper umbellatum L.
Artist not stated in the record
Charles Beauclerk (1670–1726), Duke of St. Albans
Sir Godfrey Kneller · ca. 1690–95
Piper umbellatum L.
Artist not stated in the record · 190
Piping Shepherds
Aelbert Cuyp · ca. 1643–44
Piper umbellatum L.
Artist not stated in the record · 1931
Irises
Vincent van Gogh · 1890
Piper umbellatum L.
Artist not stated in the record
The Adoration of the Christ Child
Master of Frankfurt · possibly 1496–1502
Piper umbellatum L.
Artist not stated in the record · 1866
Gajde
Artist not stated in the record · late 19th century
Piper umbellatum L.
Artist not stated in the record
Elizabeth Farren (born about 1759, died 1829), Later Countess of Derby
Sir Thomas Lawrence · 1790
Piper umbellatum L.
Artist not stated in the record · May 1917
Erasmus of Rotterdam
Hans Holbein the Younger · ca. 1532
Piper umbellatum L.
Artist not stated in the record · Jun 1915 to Aug 1915
Mary, Queen of Scots, with Her Son, James
British Painter · 19th century
Piper umbellatum L.
Artist not stated in the record
Untitled
Artist not stated in the record · late 19th century
Piper umbellatum L.
Artist not stated in the record
.jpg&w=3840&q=75)
Miniature Zampogna
Artist not stated in the record · 19th century
Piper umbellatum L.
Artist not stated in the record · Nov 1909
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. 30 matched · 24 examined · 7 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. 1313506 matched · 40 examined · 2 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 2026-09-05 09:25 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.