Front-end Web Crypto hashes receipts into a 256-bit on-chain fingerprint; title transfers append per deal; ESG energy data is bound and attested.

Splitting the warehouse receipt into an ownership chain and a delivery-right chain, then anchoring each transfer with SM2 signatures and SM3 timestamps, lets banks check before lending whether the future delivery right is already pledged. Duplicate pledging and one-cargo-multiple-sales are blocked at the title-confirmation stage.