Tombstone produces cryptographic proof of every data deletion — independently witnessed, tamper-evident, and verifiable by any party.
Early access for California-based companies · No commitment
Why it holds up
No PII, no subject identifiers, no raw data retained. No compelled or voluntary disclosure can produce what was never in Tombstone's possession.
Every event is Ed25519-signed and chained to the one before it. Silent alteration is structurally impossible — any tampering breaks the chain.
The record originates outside the systems of the party claiming compliance. Tombstone is a neutral notary with no stake in the outcome.
Events are written once, never modified. Neither you nor Tombstone can alter the chain. The guarantee is enforced at the protocol level, not by policy.
Any party — regulator, auditor, or the data subject — can verify a certificate at verify.tombstone.sh. No account. No prior relationship required.
Audit findings cannot rely primarily on management assertions. Tombstone provides the independent third-party record that satisfies that standard by design.
Audit findings cannot rely primarily on management assertions. An internal confirmation is not a sufficient record.
Priority · Aug 1, 2026Deletion requests fulfilled within 45 days with documented, auditable proof. DROP program enforcement active.
Active enforcementThe burden of proof falls on the data controller. The same evidentiary gap applies across every major jurisdiction.
Cross-jurisdictionEarly access for California-based companies with active deletion obligations.
No commitment · No account required to verify a certificate