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. 22 shown for “Nicolas Pitau” — 50 records examined, 9 dropped by the rights gate.
Archives queried 2026-09-01 07:40 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
St. Peter Nolscus
Nicolas Pitau · n.d.

Portrait of Jean IV, Duke de Bretagne (1293-1345)
Artist not stated in the record · 1710-1720

The Prophet Elias
Nicolas Pitau · n.d.

Portrait of Arthur, 3rd Duke of Bretagne (1393-1458)
Artist not stated in the record · 1710-1720

St. Francis
Nicolas Pitau · n.d.
Muhlenbergia sp.
Artist not stated in the record · 20 Sep 1953

St. Augustine
Nicolas Pitau · n.d.
Muhlenbergia rigida (Kunth) Kunth
Artist not stated in the record · 20 Sep 1953

St. Anthony
Nicolas Pitau · n.d.

Nicola Sacco and Bartolomeo Vanzetti
Unidentified Artist · 1921

The Blessed John Mata
Nicolas Pitau · n.d.

Album of Ornament, Gueridons, Braziers, and Ceiling Designs
Alexis Loir, French, 1640 - 1713 · ca.1660–1716

Angels Mourning over the Dead Christ
Nicolas Pitau · ca. 1690–1720

Nicola Sacco and Bartolomeo Vanzetti
Unidentified Artist · c. 1921

Gaspard de Daillon du Lude (ca. 1602–1676)
Jacques Saillant · 1628

Nicolas Marchand
William Bache, 22 Dec 1771 - 9 Jul 1845 · c. 1803-04

Title Page for "Porticus Religiosa"
Nicolas Pitau · n.d.

Pedro Luis Nicolas de Rivery Fouet
William Bache, 22 Dec 1771 - 9 Jul 1845 · c. 1803-04

Les dix livres d'Architecture de Vitruve, corrigez et traduits nouvellement en François, avec notes & de figures
Marcus Pollio Vitruvius · 1684

Nicolas Robelot
William Bache, 22 Dec 1771 - 9 Jul 1845 · c. 1803-04
Muhlenbergia macroura (Kunth) Hitchc.
Artist not stated in the record · 5 Oct 1962
Muhlenbergia vaginata Swallen
Artist not stated in the record · 6 Dec 1976
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. 10 matched · 10 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.10 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 5593 matched · 40 examined · 9 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 07:40 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.