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. 21 shown for “Arthur Quentin de Gromard” — 49 records examined, 1 dropped by the rights gate.
Archives queried 2026-09-06 20:54 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Cécilium
Arthur Quentin de Gromard · ca. 1880
Schoenus nigricans L.
Artist not stated in the record · 19 Jun 1887
Mask
Condorhuasi-Alamito artist(s) · 400 BCE–700 CE
Carex arenaria L.
Artist not stated in the record · 19 Jun 1887
Herman Doomer (ca. 1595–1650)
Rembrandt (Rembrandt van Rijn) · 1640
Carex extensa Gooden.
Artist not stated in the record · 15 Jul 1894
Virgin and Child
Netherlandish (Bruges) Painter · ca. 1495–1500
Carex arenaria L.
Artist not stated in the record · 15 Jul 1894
Equestrian Portrait of Cornelis (1639–1680) and Michiel Pompe van Meerdervoort (1638–1653) with Their Tutor and Coachman
Aelbert Cuyp · ca. 1652–53
Ophioglossum vulgatum L.
Artist not stated in the record · 15 Jul 1894
Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
Self-Portrait of Maurice-Quentin de La Tour
Artist not stated in the record · 1742
Sulking
Edgar Degas · ca. 1870
Eriophorum angustifolium Honck.
Artist not stated in the record · 19 Jun 1887
Hermann von Wedigh III (died 1560)
Hans Holbein the Younger · 1532
Carex flava L.
Artist not stated in the record · 19 Jun 1887
Benedikt von Hertenstein (born about 1495, died 1522)
Hans Holbein the Younger · 1517
Lindernia microcalyx Pennell & Stehlé in Stehlé & Quentin
Artist not stated in the record · 18 Nov 1937
Potentilla supina L.
Artist not stated in the record · 8 Oct 1889
Carex dioica L.
Artist not stated in the record · 20 May 1879
Carex dioica L.
Artist not stated in the record · 12 May 1879
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. 9 matched · 9 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.9 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 663256 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 2026-09-06 20:54 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.