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 “Martin O'Brien, 19th century” — 24 records examined, 4 dropped by the rights gate.
Archives queried 2026-09-05 09:28 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.
Altar Predella and Socle of Archbishop Don Dalmau de Mur y Cervelló
Francí Gomar · ca. 1456–1458
Virgin and Child
Dieric Bouts · ca. 1455–60
Portrait of a Young Man
Hans Memling · ca. 1472–75
Portal from the Church of San Leonardo al Frigido
Biduinus · ca. 1175
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
St. Martin
Hans Baldung (called Hans Baldung Grien) · 16th century
Saint Paul with a Donor; Christ Appearing to His Mother
Master of the Saint Ursula Legend · ca. 1485
Saint Michael and the Dragon
Spanish (Valencian) Painter(?) · ca. 1405
Female dege dal nda (sculpture of the terrace)
"Master of Ogol" · 18th–19th century
Plaque with the Holy Women at the Sepulchre
Artist not stated in the record · early 10th century
Old Street in Rouen
A. Paul Artigue · 19th century
Desk (bonheur du jour)
Martin Carlin · ca. 1770
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. 811 matched · 24 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 2026-09-05 09:28 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.