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. 14 shown for “Johan Arndts” — 42 records examined, 10 dropped by the rights gate.
Archives queried 2026-08-27 21:05 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term..R.jpg&w=3840&q=75)
Doct. Johan Arndts, dess gottseligen und hocherleuchteten Lehrers Paradijss Gärtlein : welches voller christlichen Tugend-Gebete erfüllet
Johan Arndts · 1696
Compsopogon sp.
Artist not stated in the record · -- Nov ----
Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
Zonaria zonalis
Artist not stated in the record · -- Jul ----
Laurencia microcladia
Artist not stated in the record · -- Aug ----
Bangiopsis subsimplex
Artist not stated in the record · -- Aug ----
Dasycladus vermicularis (Scop.) Krasser
Artist not stated in the record · -- Jun ----
Caulerpa racemosa var. clavifera
Artist not stated in the record · -- Aug ----
Gracilaria ferox
Artist not stated in the record · -- Jun ----
Wrangelia bicuspidata Børgesen
Artist not stated in the record · Jan 1929
Spyridia filamentosa (Wulfen) Harv.
Artist not stated in the record · -- Nov ----
Dictyopteris delicatula J.V.Lamouroux
Artist not stated in the record · -- Jan ----
Sargassum natans (L.) Gaillon
Artist not stated in the record · Feb 1929
Hypnea cervicornis J. Agardh
Artist not stated in the record · -- Nov ----
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. 2 matched · 2 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.2 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 2561 matched · 40 examined · 10 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 2026-08-27 21:05 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.