OpenGlyph — Catalogue of the American Public DomainJurisdiction: United StatesRev. 2026.08
Images / art

Two 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 “Gonatozygon brebissonii var. laeve” — 40 records examined, 1 dropped by the rights gate.

Archives queried 2026-09-10 14:32 UTC · fetched live for this request

Object
Public domainThe Met’s isPublicDomain field is true for this object.
CC0 (public-domain equivalent)Smithsonian’s metadata_usage.access reads CC0 — a waiver, not an expired term.
Not shownAnything failing its archive’s rights field is dropped server-side and never appears here.
Gonatozygon brebissonii var. laeve

Gonatozygon brebissonii var. laeve

Artist not stated in the record · 15 Mar 1909

CC0 (public-domain equivalent)Smithsonian
Palmogloea protuberans var. brebissonii

Palmogloea protuberans var. brebissonii

Artist not stated in the record · 12 Jun 1885

CC0 (public-domain equivalent)Smithsonian
Gonatozygon monotaenium De Bary

Gonatozygon monotaenium De Bary

Artist not stated in the record · 6 Oct 1864

CC0 (public-domain equivalent)Smithsonian
Gonatozygon monotaenium De Bary

Gonatozygon monotaenium De Bary

Artist not stated in the record

CC0 (public-domain equivalent)Smithsonian
Hydrocoleum brebissonii var. aerugineum Rabenh.

Hydrocoleum brebissonii var. aerugineum Rabenh.

Artist not stated in the record · -- Jul ----

CC0 (public-domain equivalent)Smithsonian
Oscillatoria nigra var. brebissonii Kütz.

Oscillatoria nigra var. brebissonii Kütz.

Artist not stated in the record

CC0 (public-domain equivalent)Smithsonian
Hapalosiphon brebissonii var. globosus Nordstedt in Wittr. & Nordstedt

Hapalosiphon brebissonii var. globosus Nordstedt in Wittr. & Nordstedt

Artist not stated in the record · 6 Aug 1876

CC0 (public-domain equivalent)Smithsonian
Gonatozygon monotaenium De Bary

Gonatozygon monotaenium De Bary

Artist not stated in the record · Sep 1855 and Mar 1856

CC0 (public-domain equivalent)Smithsonian
Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve

Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve

Artist not stated in the record · Sep 1812

CC0 (public-domain equivalent)Smithsonian
Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve

Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve

Artist not stated in the record · 28 Sep 1895

CC0 (public-domain equivalent)Smithsonian
Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve

Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve

Artist not stated in the record · Aug 1881

CC0 (public-domain equivalent)Smithsonian
Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve

Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve

Artist not stated in the record · Transcribed d/m/y: 15/9/77

CC0 (public-domain equivalent)Smithsonian
What was queried

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. 226000 matched · 40 examined · 1 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 2026-09-10 14:32 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.