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. 18 shown for “Friedrich Johann Gottlieb Lieder” — 46 records examined, 19 dropped by the rights gate.
Archives queried 2026-09-01 22:16 UTC · served from cache, not re-queried for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Prince Klemens Wenzel Lothar von Metternich (1773–1859)
Friedrich Johann Gottlieb Lieder · 1822
Sample
Johann Friedrich Netto, German · 1798
Venus
Meissen Manufactory · ca. 1744
A Monument for the Poet Christoph Fürchtegott Gellert (1715–1769) by Adolph Friedrich Oeser (1717–1799)
Artist not stated in the record · 1742–1801
Harlequina
Nymphenburg Porcelain Manufactory · ca. 1760
Celebrated Authors
Jacques Llanta, 1807 - 1864 · 1833
Salvator Mundi
Albrecht Dürer · ca. 1505
George Washington
Johann Gottlieb Schmidt, 1742 - 1800 · c. 1775-80
Christ Blessing, Surrounded by a Donor Family
German Painter · ca. 1573–82
Christian VIII
Artist not stated in the record · n.d.a.
Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
Albums of Prints: German Rocaille Designs
Caspar-Gottlieb Eisler, German, active 1707–1755 · 18th century
La Fraîcheur de la Soirée
Artist not stated in the record · ca. 1780
Portrait of a Gentleman
Johann Gottlieb Glume, German, 1711 - 1778 · 1740-1770
Monks in a Cloister
Artist not stated in the record · 1768-1839
Fraktur taufschein (Birth Certificate)
Johann Jacob Friedrich Krebs, German, active United States, ca. 1749 - 1815 · ca. 1804
Allegorical Figural Group Depicting the "Peace of Basel"
Royal Porcelain Manufactory, Berlin, German, established 1763 · late 18th century
The Tombs, Halls of Justice
Johann Gabriel Friedrich Poppel, German, born Hammer, Germany 1807-died Ammerland, Germany 1882 · 1850
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. 6 matched · 6 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.6 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 11353 matched · 40 examined · 19 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 2026-09-01 22:16 UTC, replayed here rather than repeated. 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.