Trust pillar
Provenance Ledger
Cryptographically chained, daily-anchored events for every lot — from intake to delivery.
OpenTrust Infrastructure
Institutional trust as a product
SOSNA Exchange is not a third-party listing marketplace. Every lot moves through a coordinated process of authentication, custody, insurance and verifiable history — managed exclusively by the SOSNA Trade Desk.
Trust pillar
Authentication Process
Independent lab reports, certificate matching and on-site verification before any listing reaches the public catalog.
OpenTrust pillar
Approved Vault Custody
Approved vault partners across the Miami, Prague and Dubai regions, with sealed condition reports. Custody insurance is arranged per lot under the agreed custody terms.
OpenTrust pillar
Insurance Coverage
Specie and transit insurance available for approved vault custody and sanctioned movements. Scope is confirmed in writing per lot before custody or shipment begins.
OpenTrust pillar
Dispute Coordination
Trade Desk-coordinated review with defined timelines, evidence requirements and a final operational decision — never direct buyer–seller conflict, never a legal ruling.
OpenTrust pillar
Seven-Layer Guarantee
The full SOSNA Exchange institutional guarantee stack covering authenticity, certificate match, lab verification, custody, delivery and payout.
OpenImportant notice
SOSNA Exchange is not an exchange, broker-dealer or investment platform.
Every interaction is mediated by the SOSNA Trade Desk — buyers and sellers never communicate directly. None of our guarantees constitute an investment, return or promise of appreciation.