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. 17 shown for “Pieter Perret” — 45 records examined, 13 dropped by the rights gate.
Archives queried 2026-09-02 04:59 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The conversion of Saul, who lies on the ground surrounded by horses and soldiers as Christ appears above him
Pieter Perret · 1583
Tulipa clusiana DC.
Artist not stated in the record · 10 Apr 1875
Diomedes with the Palladium in his left hand, from "Speculum Romanae Magnificentiae"
Pieter Perret · 1582
Rumex acetosella L.
Artist not stated in the record · Jun 1841
A Fountain and Basin, from "Speculum Romanae Magnificentiae"
Pieter Perret · 1581
Fedia graciliflora Fisch. & C.A. Mey.
Artist not stated in the record · 18 Jul 1876
Christ and the Woman Taken in Adultery
Pieter Perret · 1579
Podostemum ceratophylllum Michx.
Artist not stated in the record · 7 Sep 1960
A Fountain and Basin, from "Speculum Romanae Magnificentiae"
Pieter Perret · 1581
Dasya pedicellata (C. Agardh) C. Agardh
Artist not stated in the record · Transcribed d/m/y: 19/1/0
Eleocharis acicularis (L.) Roem. & Schult.
Artist not stated in the record · 20 Sep 1878
Plate XIV, from the "Exercitatio Alphabetica"
Clément Perret, 1569/71–? · 1568–69
Quercus conspersa Benth.
Artist not stated in the record · 2 Dec 1998
Eritrichium nanum (L.) Gaudin
Artist not stated in the record · Aug 1877
Besleria laxiflora Benth.
Artist not stated in the record · 14 Oct 2014
Cornutia grandifolia (Cham. & Schltdl.) Schauer
Artist not stated in the record · 27 Jun 1999
Evolvulus alsinoides (L.) L.
Artist not stated in the record · Transcribed d/m/y: 27/9/98
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. 5 matched · 5 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.5 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 1472 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 2026-09-02 04:59 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.