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. 17 shown for “M. Janssen” — 61 records examined, 35 dropped by the rights gate.
Archives queried 2026-09-02 05:10 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Atalanta and Meleager
Peter Paul Rubens · ca. 1616
Christian X
M. Janssen · n.d.a.
Virgin and Child with Four Angels
Gerard David · ca. 1510–15
Plagiothecium latebricola Schimp.
Artist not stated in the record · 10 Aug 1994
Allegory of Sacred and Profane Love
Michele Desubleo · 1665–75
Dicranum viride (Sull. & Lesq.) Lindb.
Artist not stated in the record · 31 Aug 1994
Tommaso di Folco Portinari (1428–1501); Maria Portinari (Maria Maddalena Baroncelli, born 1456)
Hans Memling · ca. 1470
Ditrichum lineare (Sw.) Lindb.
Artist not stated in the record · 28 Sep 2001
Portrait of a Man (Self-Portrait?)
Willem Drost · 1653 or 1655
The Life and Death of Achilles
Victor Honoré Janssens, Flemish, 1658 - 1736 · ca. 1722
Saint Paul with a Donor; Christ Appearing to His Mother
Master of the Saint Ursula Legend · ca. 1485
Virgin and Child
Netherlandish (Bruges) Painter · ca. 1495–1500
Groundplan of the Church of Saint John in ’s-Hertogenbosch
Pieter Jansz. Saenredam · 1632
Christ Carrying the Cross, with the Crucifixion; The Resurrection, with the Pilgrims of Emmaus
Gerard David · ca. 1510
Archangel Gabriel; The Virgin Annunciate
Gerard David · ca. 1510
Interior of the Sint-Pieterskerk, 's-Hertogenbosch
Pieter Jansz. Saenredam · 1632
Portrait of a Noblewoman, Probably Isabella of Portugal (1397–1472)
Netherlandish Painter
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. 21 matched · 21 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. 1179469 matched · 40 examined · 35 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.5 shown
These figures describe the pass run at 2026-09-02 05:10 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.