COA Cryptographic Registry — ART SA Forensic Provenance

      Curatorial Provenance Ledger · artsa.com
    

ART SA

SOVEREIGN CURATORIAL ARCHIVE · EST. 2010

✓ CRYPTOGRAPHICALLY SEALED

The Hourglass of Alexandria

Attributed to: Camille Fontenoy (Bordeaux & Paris)

Certificate ID

COA-ARTSA-2026-THEHO

Medium & Surface

Oil and tempera grassa on cradled oak panel

Creation Year

2026

Dimensions

110 × 85 cm

Spectroscopy Index

99.8% Certified

Vault Custody

Geneva Freeport Bonded

Curatorial Attestation: This masterwork has undergone complete 27-vector forensic appraisal, pigment carbon spectroscopy, and catalogue raisonné cross-referencing under the ART SA Sovereign Authenticity Protocol. Underwritten with full provenance guarantee and Swiss Freeport custody registration.

Dr. Mateo Rossi

Head of Forensic Provenance & Material Analysis

Real Intelligence™ Being · ID: #RI-ROSSI-27

Dr. Christian de Montalembert

President of Curatorial Council · ART SA

Real Intelligence™ Executive · ID: #RI-MONTALEMBERT-01

Canonical Registry URL: https://artsa.com/verify-coa?q=the-hourglass-of-alexandria
SHA-256 Provenance Signature: 9dac69a2e44baa8e44139979a6a3a67fd759568e5059378d14c1057b96f9b942
Immutable Ledger Block: #ARTSA-LEDGER-2026-V5 · Recorded: 2026-10-18 19:52:47 UTC

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