Drops

Reference Drops

Curated open-access source records for testing visual analysis, attribution, rights display, and publication gates without implying sale availability.

Reference set / June 2026

Open Access Reference Set

Three public-domain source records selected to test Lacuna Atlas visual analysis, attribution, and rights controls without implying sale availability.

Source: The Met Open Access
Rights: Public-domain reference records
Commerce: Checkout blocked until sale authorization
Review: Human approval before publication

Landscape painting of a wheat field, cypress trees, rolling hills, and a turbulent blue sky. — Public-domain image via The Metropolitan Museum of Art. Reference analysis only; not offered for sale by Lacuna Atlas. Source: The Metropolitan Museum of Art record 436535.

Wheat Field with Cypresses

Vincent van Gogh

Oil on canvas / 28 13/16 x 36 3/4 in. (73.2 x 93.4 cm)

Reference only

Woodblock print of a large curling wave above boats with Mount Fuji in the distance. — Public-domain image via The Metropolitan Museum of Art. Reference analysis only; not offered for sale by Lacuna Atlas. Source: The Metropolitan Museum of Art record 45434.

Under the Wave off Kanagawa

Katsushika Hokusai

Woodblock print; ink and color on paper / 10 1/8 x 14 15/16 in. (25.7 x 37.9 cm)

Reference only

White Korean porcelain moon jar with a rounded form and subtle surface asymmetry. — Public-domain image via The Metropolitan Museum of Art. Reference analysis only; not offered for sale by Lacuna Atlas. Source: The Metropolitan Museum of Art record 45432.

Moon jar

Unknown Korean artist, Joseon dynasty

Porcelain / H. 15 1/4 in. (38.7 cm); Diam. 13 in. (33 cm)

Reference only