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 “Goro di Gregorio” — 64 records examined, 7 dropped by the rights gate.
Archives queried 2026-09-05 13:14 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Enthroned Virgin
Goro di Gregorio · first half 14th century
Piazza San Gregorio
Miner Kilbourne Kellogg, born Manlius Square, NY 1814-died Toledo, OH 1889 · n.d.
Brother Gregorio Belo of Vicenza
Lorenzo Lotto · 1547
Knautia pannonica Herner
Artist not stated in the record · 1902
Madonna and Child
Duccio di Buoninsegna · ca. 1290–1300
Hydrurus foetidus (Villars) Trevis.
Artist not stated in the record · -- Jul ----
The Adoration of the Shepherds
Bartolo di Fredi · 1374
Silene congesta Sm.
Artist not stated in the record · 8 Aug 1872
Portrait of a Young Man
Antonello da Messina (Antonello di Giovanni d'Antonio) · ca. 1470
Codia nitida Schltr.
Artist not stated in the record · 22 Mar 1981
The Head and Shoulders of a Woman in Profile; Separate Studies of Her Head and Ear (recto); Fragment of Drapery Study, Profile of Architectural Molding (verso)
Gregorio Pagani · 1592
Megastachya mucronata (Poir.) P. Beauv.
Artist not stated in the record
Raccolta delle Principale Fontane dell' Inclitta Città di Roma con la nova Aguinta disegnate da Girolamo Felice Romano et intaglate da Pietro Miotte Borg.ne
Domenico Parasacchi · after 1651
Euphorbia heterophylla var. cyathophora (Murr.) Griseb.
Artist not stated in the record · 9 Feb 1948
Plate 1: Apuleius changed into a donkey, listening to the story told by the old woman, from "The Story of Cupid and Psyche as told by Apuleius"
Master of the Die · 1530–60
Sphagnum sp.
Artist not stated in the record · Apr 1942
Canonization of Five Cardinals in Saint Peter's Basilica, Rome
Giuseppe Tiburtio Vergelli · 1690
Caledopteryx sarasini
Artist not stated in the record · 16 Oct 1944
The Girandola at the Castel Sant'Angelo, Rome, 1692
Giovanni Battista Falda · 1692–1702
Oncotheca balansae Baill.
Artist not stated in the record · 26 Aug 1978
Venice: The Dogana and Santa Maria della Salute
Francesco Guardi
Hypericum synstylum N. Robson
Artist not stated in the record · 9 Dec 1962
Juan de Pareja (ca. 1608–1670)
Velázquez (Diego Rodríguez de Silva y Velázquez) · 1650
Tristaniopsis capitulata Brongn. & Gris
Artist not stated in the record · 15 Nov 1955
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. 55 matched · 24 examined · 1 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. 18787 matched · 40 examined · 6 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 2026-09-05 13:14 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.