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 “Stamp” — 64 records examined, 5 dropped by the rights gate.
Archives queried 2026-08-26 22:35 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Stamp
Artist not stated in the record · ca. 1300–1080 BCE
$200 Documentary Second Issue revenue stamp die proof single
Artist not stated in the record · 1871
Stamp
Artist not stated in the record · ca. 1300–1080 BCE
Stamp from the Stamp Act of 1765
Artist not stated in the record · 1765
Stamp
Artist not stated in the record · ca. 1300–1080 BCE
$500 Documentary Second Issue Persian Rug revenue stamp die proof
Joseph R. Carpenter, American · 1871
Stamp
Artist not stated in the record · ca. 1300–1080 BCE
Charleston slave badge from 1859 for Porter No. 990
William Veronee, American · 1859
Stamp
Artist not stated in the record · ca. 1300–1080 BCE
Charleston slave badge from 1808 for Servant
Charles Prince, American · 1808
Stamp
Artist not stated in the record · ca. 1300–1080 BCE
Charleston slave badge from 1862 for Porter No. 1128 / 1863 for Servant No. 44
William Veronee, American · 1862; reworked 1863
Stamp
Artist not stated in the record · ca. 1300–1080 BCE
Charleston slave badge from 1862 for Porter No. 988 / 1863 for Servant No. 92
William Veronee, American · 1862; reworked 1863
Stamp
Artist not stated in the record · ca. 1300–1080 BCE
Charleston slave badge from 1862 for Porter No. 1107 / 1863 for Servant No. 176
William Veronee, American · 1862; reworked 1863
Stamp
Artist not stated in the record · ca. 1300–1080 BCE
$1 Beer revenue stamp proof single
Bureau of Engraving and Printing · 1871
Stamp
Artist not stated in the record · ca. 1802–1640 B.C.
$5,000 Washington Documentary Second Issue Persian Rug revenue stamp proof
Artist not stated in the record · 1872
Stamp
Manteño artist(s) · 800–1450 CE
50c Beer revenue stamp proof single
Bureau of Engraving and Printing · 1871
Stamp
Artist not stated in the record · ca. 1981–1640 B.C.
Charleston slave badge from 1820 for Servant No. 375
John Joseph Lafar, American, 1784 - 1849 · 1820
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. 19540 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. 17521 matched · 40 examined · 5 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 2026-08-26 22:35 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.