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. 20 shown for “2c Jackson plate proof single” — 50 records examined, 1 dropped by the rights gate.
Archives queried 2026-09-01 01:04 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Prick Spur
Artist not stated in the record · possibly 2nd–1st century BCE
2c Jackson plate proof single
Artist not stated in the record · 1863
Prick Spur
Artist not stated in the record · possibly 2nd–1st century BCE
2c brown Jackson plate proof single
Continental Bank Note Company · July 12, 1873
Six Jewel Rivers
Sakai Ōho · ca. 1839
2c brown Jackson plate proof single
Continental Bank Note Company · July 12, 1873
Venus and Cupid
Lorenzo Lotto · 1520s
2c Andrew Jackson plate proof single
Artist not stated in the record · 1873
Satsubari, the Second of the Sixteen Arhats
Artist not stated in the record · late 14th century
2c Andrew Jackson plate proof single
Artist not stated in the record · 1873
Julius Caesar (from the Heroes Tapestries)
Artist not stated in the record · ca. 1400–1410
2c Andrew Jackson plate proof single
Artist not stated in the record · 1873
Saint Anthony the Abbot in the Wilderness
Sano di Pietro (Ansano di Pietro di Mencio) · ca. 1440
2c vermilion Jackson plate proof single
American Bank Note Company · 1879
Circus Sideshow (Parade de cirque)
Georges Seurat · 1887–88
2c Andrew Jackson plate proof single
Artist not stated in the record · 1873
Wheat Field with Cypresses
Vincent van Gogh · 1889
A Boy with a Cat—Morning
Thomas Gainsborough · 1787
2c Andrew Jackson plate proof single
Artist not stated in the record · 1873
2c Andrew Jackson plate proof single
Artist not stated in the record · 1873
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. 10 matched · 10 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.10 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 360601 matched · 40 examined · 1 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 01:04 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.