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. 21 shown for “Jacob Duck” — 51 records examined, 5 dropped by the rights gate.
Archives queried 2026-08-27 10:25 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
A Couple in an Interior with a Fortune-Teller
Jacob Duck · ca. 1632–33
Seated Cavalier with Wine Glass
Jacob Duck, Netherlandish, 17th century · 1650–60
Side chair (chais à la reine) (one of a pair)
Georges Jacob · 1784
Dipteryx trifoliolata (Ducke) Ducke
Artist not stated in the record · 15 Jul 1995
Duck and Reeds
Berthe Morisot · 1889
Exellodendron barbatum (Ducke) Prance
Artist not stated in the record · 1 Mar 1992
Bronze tripod and dinos (deep round-bottomed bowl)
Artist not stated in the record · ca. 525–475 BCE
Alseis longifolia Ducke
Artist not stated in the record · 15 Jul 1995
Schnella cupreonitens (Ducke) Wunderlin
Artist not stated in the record · 11 Feb 1991
Swan and Duck, with Portraits of Julie
Berthe Morisot · 1889
Apeiba macropetala Ducke
Artist not stated in the record · 8 Sep 1989
Curlews and Ducks
Nicolas Robert · 17th century
Terminalia viridiflora (Ducke) Gere & Boatwr.
Artist not stated in the record · 12 Oct 1992
A Maid Asleep
Johannes Vermeer · ca. 1656–57
Schnella siqueirae (Ducke) Wunderlin
Artist not stated in the record · 26 Jan 1994
Kitchen Scene
Peter Wtewael · 1620s
Terminalia viridiflora (Ducke) Gere & Boatwr.
Artist not stated in the record · 13 Oct 1992
Drag #1115
Brewster & Co. · 1850–70
Zygia racemosa (Ducke) Barneby & J.W. Grimes
Artist not stated in the record · 11 Jan 1984
Zygia racemosa (Ducke) Barneby & J.W. Grimes
Artist not stated in the record · 24 Nov 2004
Senefeldera macrophylla Ducke
Artist not stated in the record · 10 Feb 1991
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. 11 matched · 11 examined · 1 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.10 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 33284 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 2026-08-27 10:25 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.