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 “Altenburg Painter” — 62 records examined, 40 dropped by the rights gate.
Archives queried 2026-08-27 06:12 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Fragment of a terracotta oinochoe (jug)
Altenburg Painter · ca. 560–550 BCE
Terracotta oinochoe (jug)
Altenburg Class · ca. 515 BCE
The Nativity
Lorenzo Monaco (Piero di Giovanni) · ca. 1406–10
The Adoration of the Magi
Bartolo di Fredi · ca. 1390
The Crucified Christ between the Virgin and Saint John the Evangelist
Lorenzo Monaco (Piero di Giovanni) · ca. 1406
Madonna and Child
Simone Martini · ca. 1326
Saint Ansanus
Simone Martini · ca. 1326
Saint John the Baptist; Saint Lucy
Perugino (Pietro di Cristoforo Vannucci)
The Crucifixion
Pietro Lorenzetti · 1340s
Saint Andrew
Simone Martini · ca. 1326
Portrait of a Woman with a Man at a Casement
Fra Filippo Lippi · ca. 1440
The Triumph of Fame; (reverse) Impresa of the Medici Family and Arms of the Medici and Tornabuoni Families
Giovanni di ser Giovanni Guidi (called Scheggia) · ca. 1449
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. 22 matched · 22 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. 13057 matched · 40 examined · 40 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.0 shown
These figures describe the pass run at 2026-08-27 06:12 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.