A warehouse receipt is not about the paper; it is about who controls title. SNSUC generates the digital receipt on the client side, using SHA-256 to produce a 256-bit digest of the bill of lading, the quality certificate and the warehouse-in timestamp. The owner computes the fingerprint on their own machine before it goes on chain; the private key never leaves the terminal.

That moves the cost of trust from "hire a third party to vouch" to "run one hash." When a buyer verifies, they recompute the same digest and compare it against the on-chain record — a few milliseconds to confirm the title was not swapped at the moment of transfer. For transshipment parcels that often run into thousands of tonnes across the 13 categories, document turnaround drops from days to minutes.

ESG carbon footprints travel the same channel: each batch's energy use and transport emissions are converted into data points, hashed and posted on chain, so a buyer can trace by lot instead of trusting a generic claim. Once carbon data is on chain, rewriting it costs more than faking it — that is what makes disclosure credible.