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 “Wilhelm (Guillaume) Koller” — 22 records examined, 4 dropped by the rights gate.
Archives queried 2026-08-28 06:23 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.Smithsonian Open Access: HTTP 429 from api.si.edu. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.
Hugo van der Goes Making a Portrait of Mary of Burgundy
Wilhelm (Guillaume) Koller · ca. 1872
The Denial of Saint Peter
Caravaggio (Michelangelo Merisi) · 1610
Landscape with Catacombs
Domenico Beccafumi · 1530–40
Time, Apollo and the Seasons
Claude Lorrain (Claude Gellée) · 1662
Compositional Sketches for the Virgin Adoring the Christ Child, with and without the Infant St. John the Baptist; Diagram of a Perspectival Projection (recto); Slight Doodles (verso)
Leonardo da Vinci · 1480–85
The French Comedians
Antoine Watteau · ca. 1720
Saint Bartholomew
Albrecht Dürer · 1523
Portrait of a Monk in Prayer
French Painter
Tommaso di Folco Portinari (1428–1501); Maria Portinari (Maria Maddalena Baroncelli, born 1456)
Hans Memling · ca. 1470
The Annunciation
Hans Memling · ca. 1465–70
Virgin and Child with Saint Catherine of Alexandria
Anthony van Dyck · ca. 1630
The Garter
Jean François de Troy · 1724
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 · 4 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. HTTP 429 from api.si.edu. No records from this archive are shown for this query.Unavailable
These figures describe the pass run at 2026-08-28 06:23 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.