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 “Giovanni Battista Dell'Era” — 64 records examined, 8 dropped by the rights gate.
Archives queried 2026-08-28 18:28 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 Giovanni Antonio Santarelli
Giovanni Battista Dell'Era · 1765–99
Title page, "Il Campo Marzio dell'Antica Roma," from part 20 of "The Complete Works of Giovanni Battista Piranesi"
Giovanni Battista Piranesi, Italian, 1720–1778 · 1800
The Triumph of Fame; (reverse) Impresa of the Medici Family and Arms of the Medici and Tornabuoni Families
Giovanni di ser Giovanni Guidi (called Scheggia) · ca. 1449
Saint Paulinus Preaching
Artist not stated in the record · 1750–1780
Allegory of the Planets and Continents
Giovanni Battista Tiepolo · 1752
Plan and Elevation for the Chapel of Orazio Lancellotti at San Giovanni Archbasilica
Giovanni Battista De Rossi, Italian, ca. 1601 - 1678 · ca. 1675
The Battle of Vercellae
Giovanni Battista Tiepolo · 1725–29
Portrait of Giovanni Battista Casti (1721-1803)
Artist not stated in the record · ca. 1830
The Investiture of Bishop Harold as Duke of Franconia
Giovanni Battista Tiepolo · ca. 1751–52
Palace of the Prince of Palestrina, Side Elevation Toward the Piazza Bernini, Rome
Artist not stated in the record · 17th century
The Glorification of the Barbaro Family
Giovanni Battista Tiepolo · ca. 1750
Raccolta di teste
Artist not stated in the record · 1750–1780
The Triumph of Marius
Giovanni Battista Tiepolo · 1729
Raccolta di teste
Artist not stated in the record · 1750–1780
The Capture of Carthage
Giovanni Battista Tiepolo · 1725–29
Carceri Series, Title Page
Giovanni Battista Piranesi, Italian, 1720–1778 · 1745
Bartolomeo Bonghi (died 1584)
Giovanni Battista Moroni · shortly after 1553
Raccolta di teste
Giovanni Domenico Tiepolo, Italian, 1727 – 1804 · ca. 1757
The Apotheosis of the Spanish Monarchy
Giovanni Battista Tiepolo · 1760s
A Stucco Angel from the Nave Vault, Church of the Gesu, Rome," from the album "Drawings after Ornament and Architecture"
Jean-Robert Ango, French, active in Rome 1759 –1770, d. 1773 · ca. 1759–70
The Apotheosis of the Spanish Monarchy
Giovanni Battista Tiepolo · 1760s
Raccolta di teste
Artist not stated in the record · 1770–1774
Saint Thecla Praying for the Plague-Stricken
Giovanni Battista Tiepolo · 1758–59
Raccolta di teste
Artist not stated in the record · 1770–1774
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. 1243 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. 1772 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 18:28 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.