On carbon, European buyers now want "checkable," not "sayable." CBAM charges on actually embedded emissions, and what you file at customs is a number, not a slogan. So we bind the carbon ledger and title to one chain: each cargo's Scope 3 — extraction, ocean freight, load and discharge — is computed into a figure and hashed into the digital warehouse receipt. The operational win is that title transfer and carbon disclosure share one source. A buyer verifying the SHA-256 fingerprint confirms both "this cargo is mine" and "this is its carbon" at once, with no two-week wait for a separate third-party report. EUR/CNY is 7.6907 today; the carbon cost is locked straight into RMB. The real trap is data capture. Ocean freight emissions must be computed on the actual route and load, not fudged with an industry average, or the EU will find the gap and bill the difference plus penalty. SNSUC builds an emissions file per vessel, logs it at source, and self-checks it before it goes on-chain.