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 “Adriaan de Weerdt” — 64 records examined, 24 dropped by the rights gate.
Archives queried 2026-09-02 00:37 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Madonna and Child with the Infant Saint John the Baptist, Three Women, and an Angel
Adriaan de Weerdt · mid 16th century
Philip II
Pieter Van Gunst, c. 1667 - 1724 · n.d.a.
Charity
Adriaan de Weerdt · second half 16th century
Contopus sordidulus veliei
Artist not stated in the record · 27 May 1911
Groundplan of the Church of Saint John in ’s-Hertogenbosch
Pieter Jansz. Saenredam · 1632
Thryomanes bewickii
Artist not stated in the record · 12 Jan 1911
Young Woman with a Water Pitcher
Johannes Vermeer · ca. 1662
Vireo solitarius cassinii
Artist not stated in the record · 11 Aug 1910
The Annunciation
Hans Memling · ca. 1465–70
Pipilo fuscus senicula
Artist not stated in the record · 17 Jan 1910
Man Weighing Gold
Adriaen Isenbrant · ca. 1515–20
Carduelis tristis salicamans
Artist not stated in the record · 15 Mar 1914
Curiosity
Gerard ter Borch the Younger · ca. 1660–62
A Woman Seated at a Window
Gabriël Metsu · early 1660s
Vermivora celata sordida
Artist not stated in the record · 15 Dec 1911
The Visit to the Nursery
Gabriël Metsu · 1661
Still Life with Lobster and Fruit
Abraham van Beyeren · probably early 1650s
Carduelis psaltria hesperophila
Artist not stated in the record · 27 Jan 1910
Table
Pierre Gole · ca. 1660
A Woman Playing the Theorbo-Lute and a Cavalier
Gerard ter Borch the Younger · ca. 1658
Carpodacus mexicanus frontalis
Artist not stated in the record · 14 May 1908
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. 28 matched · 24 examined · 1 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. 612650 matched · 40 examined · 23 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 2026-09-02 00:37 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.