In transshipment, banks flag back-to-back letters of credit and offshore resale as high-attention structures, so enhanced due diligence is mandatory. SNSUC moves client identity checks upstream: in the browser it uses Web Crypto to generate a SHA-256 fingerprint of the business license and power of attorney; the file never leaves the device, only the fingerprint goes on chain.

The model shares its root with the digital warehouse receipt, but the object is the counterparty, not the cargo. A new counterparty first hits the fingerprint ledger; the Iran-origin automatic rejection rule (a compliance red line) is wired straight into the check, and a client that fails cannot enter the transshipment list. Paper scans are easy to alter; only a matching fingerprint counts.

Counterparty due diligence shifts from "collect a stack of scans" to "verify a set of hashes." When a bank asks, it traces the fingerprint back to the original file state without mailing documents back and forth. Note: this anchors identity and compliance only — no negotiation bottom line or equity detail is involved.