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. 23 shown for “Leonardo Marini” — 64 records examined, 26 dropped by the rights gate.
Archives queried 2026-09-04 00:09 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Design for a Wall and a Ceiling Decoration
Leonardo Marini · 1774–78
Mullus argentinae Hubbs & Marini
Artist not stated in the record · 12 Jan 1888
Design for a Ceiling
Leonardo Marini · 1774–78
Design for One Eighth of a Ceiling of a Reception Room at the Royal Palace at Moncalieri
Leonardo Marini · 1774–78
Microplitis marini
Artist not stated in the record · 19 Jun 1997
Design for a Stage Set: A Classical Courtyard and Colonnade with a Statue of Minerva
Leonardo Marini · 1780–90
Study of a Rearing Horse after Leonardo da Vinci
Francesco Melzi, Italian, 1491 – 1570 · ca. 1520–25
Design for the Interior of a Gallery of a Palace
Leonardo Marini · 1760–97
Picramnia guerrerensis W.W. Thomas
Artist not stated in the record · 6 Jun 1985
Design for Ceiling
Leonardo Marini · 18th century
Self-Portrait of Leonardo da Vinci, from "Original Designs of the Most Celibrated Mastesr of the Bolognese, Roman, Florentine, and Venetian Schools, in his Majesty's Collection"
Artist not stated in the record · 1795
Ornamental Design for Niche
Leonardo Marini · 18th century
Artemisia argentea
Artist not stated in the record · May 1865
Design for Ceiling
Leonardo Marini · 18th century
Silene maritima With.
Artist not stated in the record · Jul 1865
Design for Ceiling
Leonardo Marini · 18th century
Steindachnerina biornata
Artist not stated in the record · Jul 1933
Design for Stage Set
Leonardo Marini · 18th century
Sporobolus pumilus (Roth) P.M. Peterson & Saarela
Artist not stated in the record · Aug 1885
Wall Design
Leonardo Marini · 18th century
Distichlis spicata (L.) Greene
Artist not stated in the record · Aug 1885
Design for Ceiling
Leonardo Marini · 18th century
Chloris prieurii Kunth
Artist not stated in the record · Sep 1888
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. 39 matched · 24 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.12 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 409 matched · 40 examined · 26 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 2026-09-04 00:09 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.