SNSUC digital warehouse receipt moves title registration into the browser. The holder hashes the receipt elements — grade, quantity, warehouse, inbound timestamp — with SHA-256 via the Web Crypto API; the 256-bit digest and signature go on-chain, and both warehouse and buyer hold independently verifiable copies. This shifts the trust cost of who owns this cargo, and when, from a third-party intermediary onto mathematics: change a single byte at either end and the hash fails to match.

On the carbon side, the ESG module attaches emission factors by category — the heavy-oil chain uses refinery-to-port energy, the rubber chain uses plantation-to-delivery — and every re-export settlement auto-produces an auditable carbon ledger. For the trading desk this means a Lula crude receipt runs from creation to endorsement without leaving the browser; the buyer verifies the title chain locally before the letter of credit opens, cutting out the email round-trips that used to sit between confirmation steps.