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 “Francesco Colonna” — 64 records examined, 8 dropped by the rights gate.
Archives queried 2026-08-28 06:20 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Hypnerotomachia Poliphili
Francesco Colonna · December 1499
Design for Garden Architecture with Colonna Arms
Artist not stated in the record · 1600–1750
Siren
Colonna · ca. 1600
Portrait of Girolamo Colonna, Cardinal
Artist not stated in the record · ca. 1750
Venus and Cupid
Lorenzo Lotto · 1520s
Brassica tournefortii Gouan
Artist not stated in the record · 12 Apr 1934
Allegorical Figure Representing Geometry
Giovanni Battista Tiepolo · 1760
Gagea amblyopetala Boiss. & Heldr.
Artist not stated in the record · 7 Apr 1883
Allegorical Figure Representing Arithmetic
Giovanni Battista Tiepolo · 1760
Tissa salina (J. Presl & C. Presl) Britton
Artist not stated in the record · 12 Apr 1934
Allegorical Figure Representing Metaphysics
Giovanni Battista Tiepolo · 1760
Woman with a Book
Artist not stated in the record · ca. 1760–1770
Allegorical Figure Representing Grammar
Giovanni Battista Tiepolo · 1760
Woman with a Turban
Artist not stated in the record · ca. 1760–1770
Saint Francis of Assisi
Antoniazzo Romano (Antonio di Benedetto Aquilio) · ca. 1480–81
The Drawing Academy of Francesco Rosaspina
Artist not stated in the record · 1811
Hypnerotomachia Poliphili
Anonymous, Italian, Venetian 15th century · 1545
Piazza San Domenico in Bologna; Piazza San Francesco and Villa Aldini in Bologna; Study of Tomb of Glossatori
Felice Giani, Italian, 1758–1823 · 1811–14
Dead Christ Supported by Angels
Francesco Trevisani · ca. 1710
Francesco Mazzolini
Artist not stated in the record · c. 1860-70
Dish (coppa)
Francesco Xanto Avelli da Rovigo · 1532
Francesco Mazzolini
Artist not stated in the record · c. 1860-70
Doorknocker
Artist not stated in the record · late 16th century or later
Francesco Mazzolini
Artist not stated in the record · c. 1860-70
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. 56 matched · 24 examined · 0 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. 446 matched · 40 examined · 8 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 2026-08-28 06:20 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.