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. 16 shown for “Kuznetsoff Pottery, founded 1810” — 46 records examined, 30 dropped by the rights gate.
Archives queried 2026-09-07 08:05 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Chessmen (32)
David Dunderdale & Co. · ca. 1800–1810
Cup and saucer
Kuznetsoff Pottery, founded 1810 · late 19th century
Oval basin with lizard, shells, and light blue background
Georges Pull · 1865–1875
Creamer
Kuznetsoff Pottery, founded 1810 · late 19th century
Terracotta oinochoe: chous (jug)
Meidias Painter · ca. 420–410 BCE
Sugarbowl
Kuznetsoff Pottery, founded 1810 · late 19th century
BEAUTIES OF AMERICA./ PENNSYLVANIA HOSPITAL/ PHILADELPHIA./ J&W RIDGWAY.
John & William Ridgway · ca. 1814–ca. 1830
Cup and saucer
Kuznetsoff Pottery, founded 1810 · late 19th century
Harvard / Hall. Mafs.
Job & John Jackson · ca. 1831–ca. 1835
Cup and saucer
Kuznetsoff Pottery, founded 1810 · late 19th century
![[University Hall, Harvard College], by Job & John Jackson](/_next/image?url=https%3A%2F%2Fimages.metmuseum.org%2FCRDImages%2Fad%2Fweb-large%2F24477.jpg&w=3840&q=75)
[University Hall, Harvard College]
Job & John Jackson · ca. 1831–ca. 1835
Cup and saucer
Kuznetsoff Pottery, founded 1810 · late 19th century
Cup and saucer
Kuznetsoff Pottery, founded 1810 · late 19th century
Cup and saucer
Kuznetsoff Pottery, founded 1810 · late 19th century
Teapot and lid
Kuznetsoff Pottery, founded 1810 · late 19th century
Gnaphalium sylvaticum L.
Artist not stated in the record
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. 6 matched · 6 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.6 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 71624 matched · 40 examined · 30 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.10 shown
These figures describe the pass run at 2026-09-07 08:05 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.