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. 24 shown for “P. J. Bertren, active 18th century” — 64 records examined, 2 dropped by the rights gate.
Archives queried 2026-09-02 18:05 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Armor (Gusoku)
Bamen Tomotsugu · 18th century
Ornamental Medallion Designs
P. J. Bertren, active 18th century · 1768
The Last Supper
Ugolino da Siena (Ugolino di Nerio) · ca. 1325
Ornamental Medallion Designs
P. J. Bertren, active 18th century · 1768
Ka'ba Tile
Osman Ibn Mehmed · ca. 1720–30
Ornamental Medallion Designs
P. J. Bertren, active 18th century · 1768
Portrait of a Young Man
Hans Memling · ca. 1472–75
Ornamental Medallion Designs
P. J. Bertren, active 18th century · 1768
Moses and Aaron before Pharaoh: An Allegory of the Dinteville Family
Master of the Dinteville Allegory · 1537
Ornamental Medallion Designs
P. J. Bertren, active 18th century · 1768
Oboe
Castel · ca. 1750
Ornamental Medallion Designs
P. J. Bertren, active 18th century · 1768
The Mater Dolorosa
Lautenbach Master · ca. 1480
Album of Prints: Vases, Medallions, and Trophies Designed by T. Bertren
Théodore Bertren, active in France, 18th century · 1765-1772
Cubiculum (bedroom) from the Villa of P. Fannius Synistor at Boscoreale
Artist not stated in the record · ca. 50–40 BCE
Ornamental Vase Designs
Théodore Bertren, active in France, 18th century · 1772
Mémoire sur un rouet a filer des deux mains a la fois
Clousier · 1777
Ornamental Vase Designs
Théodore Bertren, active in France, 18th century · 1772
Virgin and Child
Follower of Rogier van der Weyden (Master of the Saint Ursula Legend Group, Netherlandish, active late 15th century) · ca. 1480–90
Ornamental Vase Designs
Théodore Bertren, active in France, 18th century · 1772
Book cover
Johann Jakob Bruglocher II · mid-18th century
Ornamental Vase Designs
Théodore Bertren, active in France, 18th century · 1772
Armor
Artist not stated in the record · ca. 1400–1450 and later
Ornamental Vase Designs
Théodore Bertren, active in France, 18th century · 1772
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. 3964 matched · 24 examined · 2 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. 1653289 matched · 40 examined · 0 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 2026-09-02 18:05 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.