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 “Portrait of Jan van der Wouwer, from the Icones Principum Virorum” — 62 records examined, 9 dropped by the rights gate.
Archives queried 2026-09-03 06:06 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
Portrait of Jan van der Wouwer, from the Icones Principum Virorum
Artist not stated in the record · 1660
Virgin and Child with Four Angels
Gerard David · ca. 1510–15
Portrait of Jan Brueghel the Elder, from the Icones Principum Virorum
Artist not stated in the record · 1630–1641
The Crucifixion with the Virgin and Saint John
Hendrick ter Brugghen · ca. 1624–25
Portrait of Jan Snellinx, from the Icones Principum Virorum
Artist not stated in the record · ca. 1636
Aristotle with a Bust of Homer
Rembrandt (Rembrandt van Rijn) · 1653
Portrait of Jan Snellinck, from the Icones Principum Virorum
Artist not stated in the record · 1660
Bishop Jan van Malderus (Malderen)
Wenceslaus Hollar · 1645
Portrait of Gerard Seghers, from the Icones Principum Virorum
Artist not stated in the record · 1630
The Adoration of the Magi
Quinten Massys · 1526
Portrait of Adam van Noort, from the Icones Principum Virorum
Artist not stated in the record · 1630–1640
La Berceuse (Woman Rocking a Cradle; Augustine-Alix Pellicot Roulin, 1851–1930)
Vincent van Gogh · 1889
Portrait of Frans Francken, from the Icones Principum Virorum
Artist not stated in the record · 1630–1641
Hieronymus Westonius (Richard Weston, Earl of Portland)
Wenceslaus Hollar · 1645
Portrait of Jan de Wael, from the Icones Principum Virorum
Artist not stated in the record · 1660-1670
Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
Self-Portrait of Anthony van Dyck, from the Icones Principum Virorum
Artist not stated in the record · 1633–1641
Salvator Mundi
Hans Memling · 1480–85
Portrait of Justus Sustermans, from the Icones Principum Virorum
Artist not stated in the record · 1630–1641
Christ Bearing the Cross
North Netherlandish (Bruges) Painter
Portrait of Paulus Pontius, from the Icones Principum Virorum
Artist not stated in the record · 1630–1641
Head of Christ (Ecce Homo)
Petrus Christus · ca. 1445
Portrait of Frans Francken, from the Icones Principum Virorum
Artist not stated in the record · 1645-1650
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. 22 matched · 22 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. 3409065 matched · 40 examined · 9 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 2026-09-03 06:06 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.