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 “Robert Dunkarton” — 54 records examined, 32 dropped by the rights gate.
Archives queried 2026-09-04 03:22 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Mary, Queen of Scots and Lord Darnley
Robert Dunkarton · ca. 1816
Robert Richford Roberts
John B. Neagle, 4 Nov 1796 - 17 Sep 1865 · c. 1840
Mary, Queen of Scots and Lord Darnley
Robert Dunkarton · ca. 1816
Robert F. Kennedy
Gardner Cox, 22 Jan 1906 - 14 Jan 1988 · 1968
Mary, Queen of Scots and Lord Darnley
Robert Dunkarton · ca. 1816
Robert Penn Warren
Oscar White, born 1921 · c. 1970
Sigismunda
Robert Dunkarton · February 1, 1793
Robert Morris
Robert Edge Pine, 1730 - 18 Nov 1788 · c. 1785
Mary, Queen of Scots and Lord Darnley
Robert Dunkarton · ca. 1816
Robert F. Kennedy
Gardner Cox, 22 Jan 1906 - 14 Jan 1988 · 1968
Mary Horneck
Robert Dunkarton · February 1, 1778
Robert F. Kennedy
Gardner Cox, 22 Jan 1906 - 14 Jan 1988 · 1968
Rispah, 2nd Book of Samuel, Chapter 21, part IX, plate 46 from "Liber Studiorum"
Joseph Mallord William Turner · April 23, 1812
Robert Frost
Doris Ulmann, 29 May 1882 - 28 Aug 1934 · 1929
Hind Head Hill, on the Portsmouth Road (Liber Studiorum, part V, plate 25)
Joseph Mallord William Turner · January 1, 1811
Solomon Robert Guggenheim
László Moholy-Nagy, 20 Jul 1895 - 24 Nov 1946 · 1926
Rispah, 2nd Book of Samuel, Chapter 21 (Liber Studiorum, part IX, plate 46)
Joseph Mallord William Turner · May 23, 1812
Hind Head Hill, On the Portsmouth Road, part V, plate 25 from "Liber Studiorum"
Joseph Mallord William Turner · January 1, 1811
Water Mill, part VII, plate 37 from "Liber Studiorum"
Joseph Mallord William Turner · February 1, 1812
Young Anglers, part VII from "Liber Studiorum"
Joseph Mallord William Turner · June 1, 1811
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 · 0 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. 151175 matched · 40 examined · 32 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.8 shown
These figures describe the pass run at 2026-09-04 03:22 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.