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 “Zhu Dan (mid- to late 17th century)” — 64 records examined, 19 dropped by the rights gate.
Archives queried 2026-08-28 17:49 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Crossbow Brooch
Artist not stated in the record · ca. 430
The palaces and gate towers of Penglai
Zhu Dan (mid- to late 17th century) · 1683
Holy Family with Saint Anne
French Painter · early 17th century
Vase de marbre blanc, dans la grande allée à Versailles
Jean Degoullons, French, d. 1687 · 1744–56
Portrait of a Young Man
Hans Memling · ca. 1472–75
Border
Artist not stated in the record · mid-17th century
Tankard engraved with scenes of the Great Plague and the Great Fire of London
I N · 1675/76
Border
Artist not stated in the record · mid-17th century
Roman Landscape with a Shepherd and Sheep
Giovanni Benedetto Castiglione (Il Grechetto) · late 1640s
Border
Artist not stated in the record · mid-17th century
Arganonä Maryam (The Organ of Mary) prayer book
Baselyos, also known as "The Ground Hornbill Master" · late 17th century
Border
Artist not stated in the record · mid-17th century
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
Border
Artist not stated in the record · mid-17th century
Saint Reparata Tortured with Red-Hot Irons
Bernardo Daddi
Border
Artist not stated in the record · mid-17th century
Portrait of a Woman, possibly Ginevra d'Antonio Lupari Gozzadini
Maestro delle Storie del Pane · 1494?
Textile
Artist not stated in the record · mid-17th century
Portrait of a Man, possibly Matteo di Sebastiano di Bernardino Gozzadini
Maestro delle Storie del Pane · 1494(?)
Three goats under a flowering plum tree
Formerly attributed to Yi Yuanji (active mid- to late 11th century) · 16th-17th century
Saint Paul with a Donor; Christ Appearing to His Mother
Master of the Saint Ursula Legend · ca. 1485
LA PERSPECTIVE dans la maison de Mr. le Marquis de Dangeau
Nicolas Langlois, French, 1640 - 1703 · late 17th century
The Annunciation
Hans Memling · 1480–89
Icon
Ethiopian Orthodox · Mid-late 17th century
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. 776 matched · 24 examined · 7 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. 961830 matched · 40 examined · 12 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 2026-08-28 17:49 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.