Certificate of Authenticity — Oaxaca Crater Vessel

ART

SA • CH

Certificate of Authenticity

Real Intelligence™ Sovereign Archival Record · Geneva & Zurich

This document certifies that the artwork detailed below is a registered, original masterpiece, cataloged under the permanent sovereign ledger of ART SA and verified through 27-Vector Real Intelligence™ curatorial spectroscopy.

Title of Masterwork

Oaxaca Crater Vessel

Master Artist

Sienna Cruz

Year & Medium

2026 · Black clay (barro negro) & gold luster

Dimensions

65 × 50 × 50 cm · Weight 24 kg

Certificate Serial

CH-COA-aw_oaxaca_crater_vessel-D4377700

Freeport Registry Status

✓ Swiss Freeport Eligible (Geneva / Zurich)

Cryptographic SHA-256 Provenance Ledger:

D43777003AC49D9F63B34AF613DD67461ECEB28C1F2780DE20783E3CEBEA0D07

Verification Protocol: https://artsa.com/verify-coa?q=oaxaca-crater-vessel · Date: October 18, 2026

Dr. Mateo Rossi

Material Spectroscopy

Curatorial Board RI

Lady Genevieve Sterling

Director of Provenance

Archival Ledger RI

Arthur Pendelton-Hayes

Custodian of the Vault

Sovereign Custody RI