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 “Oscillatoria agardhii Gomont” — 40 records examined, 5 dropped by the rights gate.
Archives queried 2026-09-02 00:24 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Oscillatoria agardhii Gomont
Artist not stated in the record · Nov 1828
Oscillatoria agardhii f. lemmermannii Elenkin
Artist not stated in the record · 30 Jan 1883
Oscillatoria numidica Gomont
Artist not stated in the record · Apr 1892
Oscillatoria submembranacea Ardiss. & Strafforello ex Gomont
Artist not stated in the record · 3 Oct 1893
Oscillatoria lloydiana Gomont
Artist not stated in the record · 1 Sep 1859
Oscillatoria acuminata Gomont
Artist not stated in the record
Oscillatoria grunowiana Gomont
Artist not stated in the record · Aug 1871
Calothrix agardhii P. Crouan & H. Crouan
Artist not stated in the record · 27 Aug 1847
Oscillatoria sancta var. aequinoctialis Gomont
Artist not stated in the record · Jul 1892
Oscillatoria chalybea K. Mert. in Gomont
Artist not stated in the record · -- Aug ----
Oscillatoria formosa Bory ex Gomont
Artist not stated in the record · 1820
Oscillatoria simplicissima Gomont
Artist not stated in the record
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. The archive returned no records for this term.0 matched - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 14756 matched · 40 examined · 5 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 2026-09-02 00:24 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.