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. 16 shown for “US Navy certificate of satisfactory service” — 50 records examined, 34 dropped by the rights gate.
Archives queried 2026-09-06 06:30 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Longcase astronomical regulator
Ferdinand Berthoud · ca. 1768–70
US Navy certificate of satisfactory service
Artist not stated in the record · 1945
A Bit of War History: The Veteran
Thomas Waterman Wood · 1866
Curtiss N-9H
Curtiss Aeroplane Company · 1916-1927
A Bit of War History: The Recruit
Thomas Waterman Wood · 1866
GAR Memorial Certification of Honorable Discharge for Charles Davis
Artist not stated in the record · May 15, 1900
A Bit of War History: The Contraband
Thomas Waterman Wood · 1865
Certificate: Navy Department Discharge
Artist not stated in the record · July 18, 1865
U.S. Frigate Constitution
Nathaniel Currier · 1838-1856
Letter to Rachel Walters from John Louderback
Artist not stated in the record · May 27, 1865
Poll Tax Payment Certificate from the state of Alabama
Artist not stated in the record · January 29, 1966
Certificate of Appreciation from US Coast Guard to Maxine Sullivan
Artist not stated in the record · 20th century
V-Mail microfilm strip
Artist not stated in the record · 1945
Insitu ScanEagle X200
Artist not stated in the record
V-Mail Cover
Artist not stated in the record · Postmark: US POSTAL SERVICE NO. 2 / APR 24 / 9-AM / 1945
Army Air Forces Certificate of Appreciation for War Services
Artist not stated in the record · ca. 1946
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 · 5 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.5 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 2902886 matched · 40 examined · 29 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.11 shown
These figures describe the pass run at 2026-09-06 06:30 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.