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 “Jenny Lind Concert Ticket, October 18, 1850” — 42 records examined, 4 dropped by the rights gate.
Archives queried 2026-09-02 18:24 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Circus Sideshow (Parade de cirque)
Georges Seurat · 1887–88
Jenny Lind Concert Ticket, October 18, 1850
Artist not stated in the record · 1850
Clipper Ship "Nightingale" getting under weigh off the Battery, New York
James E. Buttersworth · 1854
Jenny Lind Concert Ticket, October 18, 1850
Artist not stated in the record · 1850
Jenny Lind Concert Ticket, October 19, 1850
Artist not stated in the record · 1850
Jenny Lind Concert Ticket, October 19, 1850
Artist not stated in the record · 1850
Jenny Lind Concert Ticket, November 29, 1850
Artist not stated in the record · 1850
Jenny Lind Concert Ticket, November 29, 1850
Artist not stated in the record · 1850
Jenny Lind Concert Program, October 19, 1850
Artist not stated in the record · 1850
Jenny Lind Concert Program, June 9, 1851
Artist not stated in the record · 1851
Jenny Lind Concert Program. September 11, 1850
Artist not stated in the record · 1850
Jenny Lind Concert Program, November 27, 1850
Artist not stated in the record · 1850
Jenny Lind Concert Program, November 30, 1850
Artist not stated in the record · 1850
Jenny Lind Concert Program, November 29, 1850
Artist not stated in the record · 1850
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. 1580079 matched · 40 examined · 4 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 2026-09-02 18:24 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.