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. 12 shown for “Max Klein” — 64 records examined, 43 dropped by the rights gate.
Archives queried 2026-09-03 05:51 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Arthur Hartmann
Max Klein · 1907
Christ on the Cross
Girolamo Muziano · 1590–1600
The Annunciation
Hans Memling · ca. 1465–70
Virgin and Child with Saints Catherine of Alexandria and Barbara
Hans Memling · early 1480s
Christ's Descent into Hell
Hieronymus Bosch
Portrait of a Carthusian
Petrus Christus · 1446
Tommaso di Folco Portinari (1428–1501); Maria Portinari (Maria Maddalena Baroncelli, born 1456)
Hans Memling · ca. 1470
Madonna and Child Enthroned with Two Angels
Fra Filippo Lippi · ca. 1440
Virgin and Child
Dieric Bouts · ca. 1455–60
The Fishermen (Fantastic Scene)
Paul Cézanne · ca. 1875
The Penitence of Saint Jerome
Joachim Patinir · ca. 1515
Saint John the Baptist; Saint Francis Receiving the Stigmata
Gerard David · ca. 1485–90
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. 99 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. 512631 matched · 40 examined · 40 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.0 shown
These figures describe the pass run at 2026-09-03 05:51 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.