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. 14 shown for “Thomas de Keyser” — 64 records examined, 41 dropped by the rights gate.
Archives queried 2026-08-27 13:50 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 Musician and His Daughter
Thomas de Keyser · 1629
Melospiza melodia euphonia
Artist not stated in the record · 17 Jun 1931
Portrait of a Man with a Shell
Thomas de Keyser · ca. 1625–26
Pipilo erythrophthalmus erythrophthalmus
Artist not stated in the record · 17 Jun 1931
Portrait of a Woman with a Balance
Thomas de Keyser · ca. 1625–26
The Harvest, Pontoise (La Récolte, Pontoise)
Camille Pissarro · 1881
Crucifixion
Thomas de Keyser · 1665
A Young Woman in a Landscape
Dutch Painter
The Garden of the Tuileries on a Spring Morning
Camille Pissarro · 1899
Still Life with Apples and Pitcher
Camille Pissarro · 1872
Haystacks, Morning, Eragny
Camille Pissarro · 1899
The Boulevard Montmartre on a Winter Morning
Camille Pissarro · 1897
Two Young Peasant Women
Camille Pissarro · 1891–92
A Cowherd at Valhermeil, Auvers-sur-Oise
Camille Pissarro · 1874
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. 2000 matched · 24 examined · 3 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. 724391 matched · 40 examined · 38 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.2 shown
These figures describe the pass run at 2026-08-27 13:50 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.