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 “Piper nigrinodum C. DC. in Urb.” — 47 records examined, 8 dropped by the rights gate.
Archives queried 2026-09-03 01:46 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Portrait of a Woman
Michael Dahl
Piper nigrinodum C. DC. in Urb.
Artist not stated in the record · 21 Nov 1905
Portrait of Nicholaes Rockox
Paulus Pontius · 1639
Piper latilimbum C. DC. in Urb.
Artist not stated in the record · 1888 to 1889
Frederick Douglass
Unknown · ca. 1855
Piper microphyllum C. DC. in Urb.
Artist not stated in the record · 6 Feb 1894
Piper latilimbum C. DC. in Urb.
Artist not stated in the record · 1902
Piper constanzanum (C. DC.) Urb.
Artist not stated in the record · 26 May 1920 to 15 Jun 1920
Piper constanzanum (C. DC.) Urb.
Artist not stated in the record · 26 May 1920 to 15 Jun 1920
Piper aequale var. dussii C. DC. in Urb.
Artist not stated in the record · 1892
Piper latilimbum C. DC. in Urb.
Artist not stated in the record · 1880
Piper latilimbum C. DC. in Urb.
Artist not stated in the record · Jan 1890
Piper constanzanum (C. DC.) Urb.
Artist not stated in the record · 18 Aug 1924
Piper ledebourii var. jamaicense C. DC. in Urb.
Artist not stated in the record · 1881
Piper eggersii C. DC. in Urb.
Artist not stated in the record · Jan 1890
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. 7 matched · 7 examined · 4 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.3 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 7478721 matched · 40 examined · 4 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 2026-09-03 01:46 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.