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 “Facsimile of original marriage certificate of Charles II and Catherine of Portugal” — 24 records examined, 0 dropped by the rights gate.
Archives queried 2026-08-27 07:39 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.
Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
The Holy Family with Saints Anne and Catherine of Alexandria
Jusepe de Ribera (called Lo Spagnoletto) · 1648
Margaret of Austria
Jean Hey (called Master of Moulins) · ca. 1490
Virgin and Child with Saint Catherine of Alexandria
Anthony van Dyck · ca. 1630
Madonna and Child Enthroned with Saints
Raphael (Raffaello Sanzio or Santi) · ca. 1504
Saint Catherine of Siena Exchanging Her Heart with Christ
Giovanni di Paolo (Giovanni di Paolo di Grazia)
The Mystic Marriage of Saint Catherine of Siena
Giovanni di Paolo (Giovanni di Paolo di Grazia)
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
The Belles Heures of Jean de France, duc de Berry
The Limbourg Brothers · 1405–1408/1409
Tommaso di Folco Portinari (1428–1501); Maria Portinari (Maria Maddalena Baroncelli, born 1456)
Hans Memling · ca. 1470
Bartolomeo Bonghi (died 1584)
Giovanni Battista Moroni · shortly after 1553
ex "Kurtz" Violin
Andrea Amati · ca. 1560
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. 33 matched · 24 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. HTTP 429 from api.si.edu. No records from this archive are shown for this query.Unavailable
These figures describe the pass run at 2026-08-27 07:39 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.