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. 24 shown for “Microspora loefgrenii f. minor N.Wille in Collins et al.” — 64 records examined, 2 dropped by the rights gate.
Archives queried 2026-09-10 18:32 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Cardinal Fernando Niño de Guevara (1541–1609)
El Greco (Domenikos Theotokopoulos) · ca. 1600
Microspora loefgrenii f. minor N.Wille in Collins et al.
Artist not stated in the record · 28 May 1899
Elizabeth Farren (born about 1759, died 1829), Later Countess of Derby
Sir Thomas Lawrence · 1790
Microspora loefgrenii f. minor N.Wille in Collins et al.
Artist not stated in the record · 28 May 1889
The Death of Socrates
Jacques Louis David · 1787
Pithophora varia N.Wille in Collins et al.
Artist not stated in the record
Tommaso di Folco Portinari (1428–1501); Maria Portinari (Maria Maddalena Baroncelli, born 1456)
Hans Memling · ca. 1470
Ulva californica N.Wille in Collins et al.
Artist not stated in the record
The Adoration of the Magi
Joos van Wassenhove · 1472–74
Pithophora varia N.Wille in Collins et al.
Artist not stated in the record
Jacob Willemsz van Veen (1456–1535), the Artist's Father
Maarten van Heemskerck · 1532
Ulvella wittrockii (N.Wille) R. Nielsen et al.
Artist not stated in the record · 22 Sep 1907
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
Ulvella wittrockii (N.Wille) R. Nielsen et al.
Artist not stated in the record · 22 Sep 1907
Portrait of a Carthusian
Petrus Christus · 1446
Ulvella wittrockii (N.Wille) R. Nielsen et al.
Artist not stated in the record · 10 Jun 1893
The Harvesters
Pieter Bruegel the Elder · 1565
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 5 Mar 1939
Wheat Field with Cypresses
Vincent van Gogh · 1889
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 18 Apr 1971
Virgin and Child
Hans Memling · 1480–85
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 9 Apr 1966
The Adoration of the Magi
Hieronymus Bosch · ca. 1475
Ulva californica N.Wille in Collins et al.
Artist not stated in the record · 25 Oct 1973
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. 30 matched · 24 examined · 2 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. 7462944 matched · 40 examined · 0 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 2026-09-10 18:32 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.