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 “Jean Antoine Pierron” — 24 records examined, 1 dropped by the rights gate.
Archives queried 2026-08-27 21:18 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.Smithsonian Open Access: HTTP 429 from api.si.edu. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.
Adam and Eve, seated on a rock, with a serpent coiled around a tree at left and a lion and a lamb at right
Jean Antoine Pierron · 1803–09
Antoine Laurent Lavoisier (1743–1794) and Marie Anne Lavoisier (Marie Anne Pierrette Paulze, 1758–1836)
Jacques Louis David · 1788
Sabine Houdon (1787–1836)
Jean Antoine Houdon · 1788
Mezzetin
Antoine Watteau · ca. 1718–20
Winter
Jean Antoine Houdon · 1787
Denis Diderot (1713–1784)
Jean Antoine Houdon · 1773
Side View of The Cradle of His Majesty the King of Rome
Adrien Louis Marie Cavelier · ca.1810–11
Elevations and Bas-reliefs of The Cradle of His Majesty the King of Rome
Adrien Louis Marie Cavelier · ca.1810–11
Cor solo
Jean Louis Antoine · ca. 1850–55
Antoine de Ruzé, Marquis of Effiat and Longjumeau, superintendant of finances (1626)
Jean Varin · 1629
Benjamin Franklin (1706–1790)
Jean Antoine Houdon · 1778
Young girl identified as Anne Audéoud of Geneva (1776–1840)
Jean Antoine Houdon · first modeled ca. 1779–80
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. 593 matched · 24 examined · 1 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. HTTP 429 from api.si.edu. No records from this archive are shown for this query.Unavailable
These figures describe the pass run at 2026-08-27 21:18 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.