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. 23 shown for “Niccolò della Casa” — 64 records examined, 12 dropped by the rights gate.
Archives queried 2026-08-29 23:20 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Portrait of Cosimo de' Medici in full armor, his left hand resting on a staff
Niccolò della Casa · 1544
View of Florence with the Cathedral, S. Croce, Palazzo Vecchio, Plate 4 from "Scelta di XXIV Vedute delle principali contrade, piazze, chiese, e palazzi della Città di Firenze"
Artist not stated in the record · ca. 1743
Resurrection of the Dead (lower left section of the Last Judgment)
Niccolò della Casa · 1548
Design for a Tondo with Arms of Cardinal Giulio della Rovere
Niccolò Martinelli, called il Trometta, Italian, 1565 – 1620 · 1566–78
Portrait of Baccio Bandinelli, in three-quarter length next to a window pane containing a statuette and statuette fragments, the artist grasps with his right hand the head of a statuette resting at his left side
Niccolò della Casa · ca. 1540–48
Lathyrus saxatilis (Vent.) Vis.
Artist not stated in the record · 27 May 1842
Angels Carrying the Cross with Saints below (upper left section of the Last Judgment)
Niccolò della Casa · 1548
Lathyrus saxatilis (Vent.) Vis.
Artist not stated in the record · 27 May 1842
Angels Carrying Pillar with Saints Below (upper right section of the Last Judgment)
Niccolò della Casa · 1548
A View of Somerset House with S. Marys Church, London
Georg Balthasar Probst, German, 1732 - 1801
The Lamentation
Artist not stated in the record · ca. 1550
Christ as Judge Surrounded by Saints (upper central section of the Last Judgment)
Niccolò della Casa · 1548
The Ascension of Mary Magdalene
Artist not stated in the record · ca. 1550
Portrait of Baccio Bandinelli
Niccolò della Casa · ca. 1544–47
Monument Designs
François de Cuvilliés the younger, German, 1731 - 1777 · 1770
The Coronation of the Virgin
Niccolò di Buonaccorso · ca. 1380
Recto: Three Musicians in Front of the Albergo Della Pace, 1810
Felice Giani, Italian, 1758–1823 · 1810
Bookcase (one of a pair)
Niccolo Michetti · ca. 1715
View of Palazzio Vecchio, Loggia, and Pizza on Occation of Fête in homage to St. John the Baptist, Plate 23 from "Scelta di XXIV Vedute delle principali contrade, piazze, chiese, e palazzi della Città di Firenze"
Artist not stated in the record · 1744
Portrait of Baccio Bandinelli with Lion
Anonymous, 16th century · 1548
Prà della Valle (Prato della Valle, Padua), from the Vedute altre prese da i luoghi altre ideate
Artist not stated in the record · ca. 1752-55
Saint Anne and the Virgin and Child Enthroned with Angels
Niccolò Alunno (Niccolò di Liberatore) · ca. 1458–61
View of the Northeastern Quarter of Florence, North of the Arno, Plate 3 from "Scelta di XXIV Vedute delle principali contrade, piazze, chiese, e palazzi della Città di Firenze"
Artist not stated in the record · ca. 1743
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. 210 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. 10641 matched · 40 examined · 11 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 2026-08-29 23:20 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.