Trust Infrastructure
Provenance ledger
Every published lot carries its own auditable history — cryptographically chained events with daily Merkle-root anchoring.
Event-by-event record
Intake, authentication, vault placement, sealed condition reports, transit and delivery are all recorded as discrete, hash-linked events.
Daily Merkle anchoring
Each day's event chain is summarized into a Merkle root and stored alongside the events, making after-the-fact tampering detectable.
Public verification
Anyone can verify a published lot's provenance and certificate fingerprint without disclosing buyer or seller identity.
No PII in the ledger
Only operational events and document hashes are recorded — never personal data, prices of private offers or counterparty identities.
Verify a specific lot
Use the SOSNA verification endpoint to publicly confirm a lot's certificate fingerprint.
Open certificate verification