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. 15 shown for “Ferdinand II, Holy Roman Emperor (1619–37)” — 64 records examined, 38 dropped by the rights gate.
Archives queried 2026-09-03 07:49 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Ferdinand II, Holy Roman Emperor (1619–37)
Artist not stated in the record · 1634
Ferdinand I, Holy Roman Emperor
Artist not stated in the record · 1531
Armor of Emperor Ferdinand I (1503–1564)
Kunz Lochner · dated 1549
Postal announcement
Artist not stated in the record · 1637
Maximillian II, Holy Roman Emperor (1527–1576)
Antonio Abondio · 1575
Portrait of Maximilian I
Albrecht Dürer, German, 1471–1528 · 1518–19
Colossal marble head of the emperor Augustus
Artist not stated in the record · ca. 14–30 CE
Maximilian I, Holy Roman Emperor (1493–1519)
Hans Reinhart the Elder · ca. 1540
Holy Roman Emperor Henry IV at Canossa
Ubaldo Gandolfi · ca. 1770–75
Spear of Emperor Ferdinand I (reigned 1558–64)
Artist not stated in the record · dated 1558
Mars and Venus United by Love
Paolo Veronese (Paolo Caliari) · 1570s
Plaque with Christ Receiving Magdeburg Cathedral from Emperor Otto I
Artist not stated in the record · ca. 962–968
Emperors Charles V and Ferdinand I
Christoph Bockstorffer · ca. 1531
Hidden silhouettes of the rulers of Europe
Lussano · 1794
Stained Glass Panel with Emperor Henry II
Artist not stated in the record · 1340–50
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. 117 matched · 24 examined · 1 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. 54087 matched · 40 examined · 37 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.3 shown
These figures describe the pass run at 2026-09-03 07:49 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.