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 “1c J.J. Allen's Sons revenue stamp single” — 64 records examined, 1 dropped by the rights gate.
Archives queried 2026-09-01 05:47 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Penitence of Saint Jerome
Joachim Patinir · ca. 1515
1c J.J. Allen's Sons revenue stamp single
Artist not stated in the record · 1882
Saint Lawrence Enthroned with Saints and Donors
Fra Filippo Lippi · 1440s
1c A. Beecher and Son revenue stamp single
Artist not stated in the record · 1865
The Death of Socrates
Jacques Louis David · 1787
1c C.B. Woodworth & Son Perfumery proof
Artist not stated in the record · 1864
.jpg&w=3840&q=75)
Clarinet in B-flat
Hawkes & Son · 1878
1c C.B. Woodworth and Son revenue stamp single
Artist not stated in the record · 1872
The Crucifixion with Saints and a Donor
Joos van Cleve · ca. 1520
1c Perry Davis and Son revenue stamp single
Artist not stated in the record · 1869
Christ Blessing, Surrounded by a Donor Family
German Painter · ca. 1573–82
1c Dr. D. Jayne and Son revenue stamp single
Artist not stated in the record · 1863
The Belles Heures of Jean de France, duc de Berry
The Limbourg Brothers · 1405–1408/1409
1c John I. Brown and Son revenue stamp single
Artist not stated in the record · 1863
The Interior of a Woman Painter's Studio
Marie Victoire Lemoine · 1789
1c Perry Davis & Son Medicine proof
Artist not stated in the record · 1864
View of Toledo
El Greco (Domenikos Theotokopoulos) · ca. 1599–1600
Madonna and Child Enthroned with Saints
Raphael (Raffaello Sanzio or Santi) · ca. 1504
.jpg&w=3840&q=75)
Clarinet in E-flat
Denis Buffet · 1825–30
The Annunciation
Botticelli (Alessandro di Mariano Filipepi) · ca. 1490
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. 76 matched · 24 examined · 0 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. 60235 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 05:47 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.