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 “3c Washington single on Confederate cover” — 64 records examined, 3 dropped by the rights gate.
Archives queried 2026-08-31 23:04 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Head of a solar deity
Maya artist(s) · 600–900 CE
3c Washington single on Confederate cover
Artist not stated in the record · May 2, 1861
Ruins of Gallego Flour Mills, Richmond
Alexander Gardner · 1865
3c Washington single on cover
Artist not stated in the record · 1861
The Life of the Virgin
Adriaen Isenbrant · after 1521
3c Washington on Confederate cover
Artist not stated in the record · May 25, 1861
Cover
Artist not stated in the record · 16th–17th century
3c Washington on Confederate Civil War Patriotic cover
Artist not stated in the record · 1861-1865
Shield cover
Chimú artist(s) · 1350–1470 CE
3c Washington on Confederate cover
Artist not stated in the record · May 15, 1861
Saint John on Patmos
Hans Baldung (called Hans Baldung Grien) · ca. 1511
Civil War Cover
Artist not stated in the record · February 16, 1861
The Rest on the Flight into Egypt
Gerard David · ca. 1512–15
3c Washington type II on Confederate cover
Artist not stated in the record · May 13, 1861
The Penitence of Saint Jerome
Joachim Patinir · ca. 1515
3c Washington Treasury Department cover
Artist not stated in the record · Aug 11, 1875
Merry Company on a Terrace
Jan Steen · ca. 1670
3c Washington Treasury Department cover front
Artist not stated in the record · 1873
Khusrau and Shirin
Hatifi · dated 904 AH/1498–99 CE
3c Washington imprint single on cover
Artist not stated in the record · c. 1852
Boating
Edouard Manet · 1874
3c Washington single on cover
National Bank Note Company · 1861
The Crucifixion with Saints and a Donor
Joos van Cleve · ca. 1520
3c Washington single on cover
Artist not stated in the record · 1861
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. 902 matched · 24 examined · 3 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. 1124916 matched · 40 examined · 0 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 2026-08-31 23:04 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.