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. 22 shown for “Carl Lang” — 55 records examined, 6 dropped by the rights gate.
Archives queried 2026-09-01 11:11 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Upright (Giraffe) Piano
Carl Lang · ca. 1830–40
Cotoneaster distichus Lange
Artist not stated in the record · 20 Sep 1899
Basin (part of a set)
Anders Lång · 1848–49
Rosa dumetorum Lange
Artist not stated in the record · 7 Jun 1910 to 12 Aug 1910
Basin (part of a set)
Anders Lång · 1848–49
Rosa dumetorum Lange
Artist not stated in the record · 27 Jun 1902 to 15 Aug 1902
Pitcher with handle (part of a set)
Anders Lång · 1848–49
Rosa dumetorum Lange
Artist not stated in the record · Jul 1862
Raguel's Reception of Tobias at Ecbatana
Pieter Aertsen · 1520–75
Cerastium arcticum Lange
Artist not stated in the record · Transcribed d/m/y: 15/8/91
Two Men before a Waterfall at Sunset
Johan Christian Dahl · 1823
Cerastium arcticum Lange
Artist not stated in the record · Transcribed d/m/y: 20/7/89
The Jabach Family
Charles Le Brun · ca. 1660
Anthyllis vulneraria subsp. maritima (Schweigg. ex Lange) Corb.
Artist not stated in the record · Transcribed d/m/y: 20/7/77
The Flowering Orchard
Vincent van Gogh · 1888
Anthyllis vulneraria subsp. maritima (Schweigg. ex Lange) Corb.
Artist not stated in the record · 20 Aug 1877
Portal from the Church of San Leonardo al Frigido
Biduinus · ca. 1175
Sagina caespitosa Lange
Artist not stated in the record · 31 Jul 1880
A Village Street: Dardagny
Camille Corot · 1852, 1857, or 1863
Rosa dumetorum Lange
Artist not stated in the record · Transcribed d/m/y: 11/7/76 to 20/7/76
Crataegus tiliifolia Koehne ex Lange
Artist not stated in the record · 13 May 1906 to 31 Jul 1906
Chaeturus prostratus Hack. & Lange
Artist not stated in the record · 1876
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. 15 matched · 15 examined · 5 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.10 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 49681 matched · 40 examined · 1 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 2026-09-01 11:11 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.