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 “Cassius M. Clay” — 64 records examined, 16 dropped by the rights gate.
Archives queried 2026-09-01 17:49 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Toilet set in original leather case
Fourteen identified German (Augsburg) goldsmiths and other German artisans; Japanese (Imari) porcelain maker · ca. 1743–45
Cassius M. Clay
Artist not stated in the record · c. 1860-70
Ewer from Burghley House, Lincolnshire
Artist not stated in the record · Chinese porcelain 1573– ca. 1585, British mounts ca. 1585
Cassius M. Clay
Artist not stated in the record · c. 1860-70
Buddha of Medicine Bhaishajyaguru (Yaoshi fo)
Artist not stated in the record · ca. 1319
Cassius M. Clay
Artist not stated in the record · c. 1860-70
Shoulao
Chantilly · ca. 1735–40
Cassius M. Clay
Artist not stated in the record · c. 1860-70
Vase
M. Louise McLaughlin · 1902
Cassius M. Clay
Artist not stated in the record · c. 1860-70
Terracotta kylix (drinking cup) with flower
Artist not stated in the record · ca. 1300–1225 BCE
Cassius M. Clay
Artist not stated in the record · c. 1860-70
Terracotta kylix (drinking cup)
Hieron · ca. 480 BCE
Cassius M. Clay
Artist not stated in the record · c. 1860-70
Terracotta amphora (jar)
Andokides · ca. 530 BCE
Cassius Marcellus Clay
Unidentified Artist · 1860
Cup and saucer
Artist not stated in the record · ca. 1820
Cassius Marcellus Clay
Charles DeForest Fredricks, 11 Dec 1823 - 25 May 1894 · c. 1861
Jar with dragon
Artist not stated in the record · early 15th century
C.M. Clay
Hoffy, Alfred M. · n.d.
Teapot (Théière chinoise)
Sèvres Manufactory · 1832–34
Training boxing gloves used and signed by Cassius Clay
Post Manufacturing Co. · 1960
Bottle in the shape of a feline
Wari artist(s) · 600–900 CE
Document listing physical measurements for Sonny Liston and Cassius Clay
Artist not stated in the record · February 1964
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. 2696 matched · 24 examined · 8 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. 1200165 matched · 40 examined · 8 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 2026-09-01 17:49 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.