Trustworthy Electronic Business Collaboration in Supply Chain Finance: A Convergent Architecture of Distributed Ledgers, Privacy-Preserving Computation, Trusted Execution, and Digital Credentials (Digital Science)

Summary

• China's above-scale industrial enterprises carried RMB 26.06 trillion of accounts receivable at the end of 2024, up from RMB 23.72 trillion a year earlier.p.2
• Enterprises issued RMB 38.3 trillion in commercial bills during 2024, with year-end bill financing balances standing at RMB 14.7 trillion.p.2
• On its trial launch day in April 2020, Shanghai Commercial Paper Exchange's supply-chain bill platform saw seventeen enterprises issue instruments totaling RMB 1.0442 million.p.3
• The proposed TCCE framework relies on a 5-layer system to separate responsibilities, assigning data privacy, authority, state tracking, and settlement to distinct layers.p.2

Key insights

1. Supply chain finance efficiency is restricted not by technology availability, but by the lack of an assurance architecture ensuring verifiable, singular receivables.p.1
2. No single technology delivers all necessary assurance properties, requiring a convergent architecture separating ledger state, credentials, and confidential computing.p.2
3. Duplicate financing is a structural failure of receivable singularity rather than a software bug.p.3
4. Hash anchors on a blockchain prove posterior integrity of data, but cannot prove anterior truth.p.4
5. The benefits of supply chain finance decay sharply with physical distance from the anchor buyer due to verification costs.p.4
6. Detection of duplicate financing and legal priority mechanisms act as complementary tools rather than substitutes.p.12
7. Verifiable selective disclosure weakly dominates both full concealment and full data disclosure for borrowers and lenders.p.2
8. Even with zero verification costs, credit pass-through along multi-tier chains faces an endogenous limit due to compounding verification errors.p.13