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 “Ryozen (ca. 1328-ca. 1360)” — 42 records examined, 13 dropped by the rights gate.
Archives queried 2026-08-26 19:59 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Album of Copies of Chinese Paintings
Kano Tsunenobu · 17th century
Arhat (Nakula), one of a set of sixteen
Ryozen (ca. 1328-ca. 1360) · mid-14th century
Two Angels
North Italian Painter (Verona?) · ca. 1330
Zenobia pulverulenta (W. Bartram ex Willd.) Pollard
Artist not stated in the record · 11 Sep 1999
cf. Sphaeranthus sp.
Artist not stated in the record · 26 Sep 2016
Begonia parvifolia Poepp. & Endl.
Artist not stated in the record · 6 Jan 1979 or 1 Jun 1979
Begonia parvifolia Poepp. & Endl.
Artist not stated in the record · 6 Jan 1979 or 1 Jun 1979
Aster ageratoides Turcz.
Artist not stated in the record · 20 Oct 1986
Solidago virgaurea var. asiatica Nakai
Artist not stated in the record · 20 Oct 1986
Cirsium borealinipponense Kitam. & Murata ex Kitam.
Artist not stated in the record · 13 Sep 1970
Homoschema blakeae
Artist not stated in the record · 13 Dec 1975
![[Niagara Panorama, Summer], by Unidentified](/_next/image?url=https%3A%2F%2Fids.si.edu%2Fids%2Fdownload%3Fid%3DSAAM-1994.91.209_1.jpg&w=3840&q=75)
[Niagara Panorama, Summer]
Unidentified · ca. 1885
Acmispon americanus (Nutt.) Rydb.
Artist not stated in the record · 5 Aug 2006
Chaenactis xantiana A. Gray
Artist not stated in the record · 15 May 2019
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. 2 matched · 2 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.2 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 85 matched · 40 examined · 13 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 19:59 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.