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. 14 shown for “Certificate” — 64 records examined, 43 dropped by the rights gate.
Archives queried 2026-09-01 02:48 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Certificate
Artist not stated in the record · early 17th century
Certificate for the Black Aviation Hall of Fame awarded to Patricia Banks
National Civil Rights Museum, American, founded 1991 · August 5, 2010
Baptismal Certificate
Artist not stated in the record · 1807
Certificate of Appreciation from US Coast Guard to Maxine Sullivan
Artist not stated in the record · 20th century
Marriage Certificate
Artist not stated in the record · ca. 1825
Birth Certificate
Artist not stated in the record · 1808
Birth Certificate
Artist not stated in the record · 1800
後藤家歴代揃目貫献上箱 Presentation Box for Sword-Grip Ornaments (Menuki)
Artist not stated in the record · 19th century
Membership Certificate of the Society of the Cincinnati
Aug. L. Belle · 1783
Birth and baptismal certificate
Johann Heinrich Otto · 1786
Birth and Baptismal Certificate
Johann Heinrich Otto · 1782
Leuckart Certificate (Penelope)
Max Klinger · n.d.
Naming Certificate for "Tagaku"
Ikkyū Sōjun · 15th century
Certificate of Bible Society
Asher Brown Durand · 19th century
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. 134 matched · 24 examined · 5 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. 73899 matched · 40 examined · 38 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.2 shown
These figures describe the pass run at 2026-09-01 02:48 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.