SNSUC's digital warehouse receipts compute a SHA-256 digest in the browser over a four-tuple — title, quantity, delivery warehouse and timestamp. The 256-bit hash goes on-chain, and the buyer re-runs the same hash locally on open, with no need to trust a central server. That moves the trust cost of title transfer from manual checking to a single click.

Every tradable receipt across the 13 categories carries an ESG carbon-footprint field: voyage distance from load port to warehouse, the carrier vessel's emission factor, and warehouse energy use, combined into tonnes of CO2 equivalent and published alongside the receipt.

The operator gain is concrete: before placing an order, a client sees the receipt's carbon footprint and hash fingerprint, so due diligence shifts from after-the-fact audit to pre-trade verification. Receipt authenticity rests on math, not on a paper stamp.