Two 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. 18 shown for “Paolo Gerolamo Piola” — 60 records examined, 34 dropped by the rights gate.
Archives queried 2026-09-01 15:40 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Scene with Four Figures of Monks Discoursing
Paolo Gerolamo Piola · 1666–1724

The Virgin and Child with Saints, Study after Gerolamo Marchesi
Felice Giani, Italian, 1758–1823 · 1810–20

Standing Figure of Apollo with a Lyre
Paolo Gerolamo Piola · 1666–1724

Fountain Basin
Domenico Piola, Italian, 1627 - 1703 · 1650–75

Christ in the House of Martha and Mary (Luke 10:38-42)
Paolo Gerolamo Piola · ca. 1700

Salome Receives the Head of St. John the Baptist
Domenico Piola, Italian, 1627 - 1703 · 1675–1700

Saint Matthew and the Angel
Giovanni Gerolamo Savoldo

The temples of Apollo and Diana built for the first day of the fireworks at SS. Peter and Paul by Paolo Posi
Artist not stated in the record · 1763

Mary Magdalen Buying Ointment
Paolo Gerolamo Piola · 1666–1724

St. Francis de Sales from St. Peter's colonnade
Jean-Robert Ango, French, active in Rome 1759 –1770, d. 1773 · ca. 1759–70

Altar candlestick with busts in relief of Saints Peter and Paul (one of a pair)
Vincenzo Grandi · mid-16th century

Portrait of Paolo Belli (Blanes) (1780-1823)
Artist not stated in the record · ca. 1840

Altar candlestick with busts in relief of Saints Peter and Paul (one of a pair)
Vincenzo Grandi · mid-16th century

The Baptism of Christ
Jacopo Bassano (Jacopo da Ponte) · ca. 1590

The Battle of Vercellae
Giovanni Battista Tiepolo · 1725–29

The Triumph of Marius
Giovanni Battista Tiepolo · 1729

The Capture of Carthage
Giovanni Battista Tiepolo · 1725–29

The Entombment
Moretto da Brescia (Alessandro Bonvicino) · 1554
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. 20 matched · 20 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. 224 matched · 40 examined · 34 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.6 shown
These figures describe the pass run at 2026-09-01 15:40 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.