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. 14 shown for “Double Cup” — 64 records examined, 37 dropped by the rights gate.
Archives queried 2026-08-27 05:46 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Double Cup
Mattheus Epfenhauser · 1574/1575
Cup
Meissen Porcelain Manufactory, German, active from 1710 to the present · ca. 1780
Double Cup
Caspar Beutmüller the Elder · 1590–1600
Cup
Meissen Porcelain Manufactory, German, active from 1710 to the present · ca. 1780
Double cup (Doppelscheuer)
Artist not stated in the record · late 19th century
Double Cup
Artist not stated in the record · 1325–50
Cup-Hilted Rapier
Carlo Piccinino · ca. 1650–75
Double cup
Artist not stated in the record · late 16th century
Double cup
Artist not stated in the record · ca. 1600
Double cup
Thomas Cory · 1685/86
Double cup
Johann Friedericus Schloeff · early 18th century
Cup with double fish
Artist not stated in the record · 12th century
Double Cup
Artist not stated in the record · 16th century
Double cup
Artist not stated in the record · ca. 2600–2500 BCE
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. 207 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. 15422 matched · 40 examined · 36 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.4 shown
These figures describe the pass run at 2026-08-27 05:46 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.