In transshipment the real risk is rarely price — it is title you cannot prove mid-voyage. A cargo of ESPO from the Middle East to China passes four hands: load port, ocean leg, transshipment, and customs clearance. Lose the title document at any step and neither banks nor buyers will touch it.

SNSUC hashes every handoff credential — bill of lading, third-party inspection, title transfer — into a SHA-256 digest and writes them to chain in time order. The hash is immutable, so who held title and when is permanently recorded. Bolt on the load-port IoT seal and GPS track, and all three parties see where the cargo is, who holds it, and its status in real time.

For the operator the payoff shows up in financing. Banks doing warehouse-receipt pledge or LC negotiation obsess over one question: is the cargo real and is the title clean. On-chain hash plus in-transit track pushes due diligence to the load port, compressing negotiation from T+3 to T+0 and lifting cash-cycle speed a full notch.