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 “The Four Horsemen of the Apocalypse” — 24 records examined, 3 dropped by the rights gate.
Archives queried 2026-09-04 07:14 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.
The Cloisters Apocalypse
Artist not stated in the record · ca. 1330
View of Haarlem and the Haarlemmer Meer
Jan van Goyen · 1646
Virgin of the Apocalypse
Master of the Amsterdam Cabinet · ca. 1480–90
Lupona (royal seat)
Ngongo ya Chintu, formerly known as the "Buli Master" · ca. 1840–1870
The Source of the Loue
Gustave Courbet · 1864
The Adoration of the Shepherds
Andrea Mantegna · shortly after 1450
Vaikuntha Vishnu
Artist not stated in the record · last quarter of the 8th century
Bodhisattva Avalokiteshvara
Artist not stated in the record · second quarter of the 8th century
Elder of the Apocalypse
Artist not stated in the record · ca. 1100
The Belles Heures of Jean de France, duc de Berry
The Limbourg Brothers · 1405–1408/1409
Armor Garniture of George Clifford (1558–1605), Third Earl of Cumberland
Jacob Halder · 1586
Enthroned Vishnu
Artist not stated in the record · second half of the 8th–early 9th 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. 15323 matched · 24 examined · 3 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 2026-09-04 07:14 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.