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 “Gerrit Dou” — 55 records examined, 3 dropped by the rights gate.
Archives queried 2026-08-26 22:56 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Self-Portrait
Gerrit Dou · ca. 1665
Styphelia albicans (Brongn. & Gris) Sleumer
Artist not stated in the record
An Evening School
Gerrit Dou · ca. 1655–57
Sesamoides interrupta (Boreau) G. López
Artist not stated in the record · 21 Aug 1890
Young Woman Chopping Onions
Louis Surugue · 1724
Rhododendron hodgsonii Hook. f.
Artist not stated in the record · 26 May 1967
Milkmaid after the painting of G.Dou in the Cabinet of Mr. Poullain
Gerrit Dou · mid-17th century
Cyathea muricata (Willd.) Fée
Artist not stated in the record · conte l'armie 1896
A Woman Seated at a Window
Gabriël Metsu · early 1660s
Ipomoea horsfalliae Hook.
Artist not stated in the record · 1893
The Lovesick Maiden
Jan Steen · ca. 1660
Ipomoea repanda Jacq.
Artist not stated in the record · 1892
A Kitchen
Hendrick Sorgh · ca. 1643
Medicago intertexta (L.) Mill.
Artist not stated in the record · Transcribed d/m/y: 28/5/95
The Serenade
Frans van Mieris the Elder · ca. 1678–80
Sinodolichos lagopus (Dunn) Verdc.
Artist not stated in the record · 14 Feb 1933
Portrait of an Old Woman
Jacob Backer
Sinodolichos lagopus (Dunn) Verdc.
Artist not stated in the record · 14 Feb 1933
Cephalus and Procris
Godfried Schalcken · probably 1680s
Lablab purpureus (L.) Sweet
Artist not stated in the record · 4 Aug 1933
Allegory of the Arts
Jacob de Wit · 1742
Lablab purpureus (L.) Sweet
Artist not stated in the record · 4 Aug 1933
Portrait of a Man
Pieter van Slingelandt · ca. 1680
Caucasalia macrophylla (M. Bieb.) B. Nord.
Artist not stated in the record · Jul 1866 to Aug 1866
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. 15 matched · 15 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. 12015 matched · 40 examined · 3 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 2026-08-26 22:56 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.