Air Gap Chain of Custody

Cryptographic proof for every transfer event crossing the air gap
Physical pathway identification — which port, device, or medium was used
Immutable append-only transfer ledger — no entry can be modified after recording
Hash chain linking each custody record to all prior records
Unauthorized transfer detection — any uncategorized crossing triggers an alert
Transfer authorization gate — required approval before data crosses the boundary
Payload digest recording — SHA-256 of data before and after crossing
Recipient verification — proof the correct party received the data
Air gap enforcement layer — network-level block enforced, not just policy
OCC-encoded custody certificates as optional compact carrier format
Cross-references Patent 08 (Chain Drive) for sequential custody events
Cross-references SPEC-03 (PII Gate) for content screening before transfer

Simulate a transfer attempt that bypasses the authorization gate — the kind of crossing the system is designed to detect and block automatically.