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Project Database
Project Reference: ITP/026/21LP
Project Title: Secure & Identity Unlinked Provenance Traced Blockchain
Hosting Institution: LSCM R&D Centre (LSCM)
Abstract: Traceability plays an important role on today's supply chain. Traceability not only helps
companies have quicker response and identify points of failure in case of incidents, but
also brings confidence to customers in purchasing the products.
Traditionally, these traceability systems were closed systems running in centralized
databases solely owned by the companies themselves and faced difficulties in data
exchange with multiple parties, which was an obstacle in constructing a trustable
and complete traceability record from raw materials to end-product. Recent development
of traceability systems attempts to solve such problem with the emerging blockchain
technology. It allows distributed information sharing and maintains traceability records for
different parties along the same supply chain easily. However, these blockchain-based
systems are still closed for privacy issue: companies need to maintain different
blockchain-based systems in order to do business with different partners without leaking
any trade secrets. This places heavy burden on operational cost and restricts the use of
blockchain-based traceability systems.
To address this problem, we propose Secure & identity Unlinked Provenance Traced
Blockchain (SUPERB). SUPERB is a blockchain-based traceability system which
implements a protocol making use of cryptographic primitives such as encryption and
zero-knowledge proofs to protect secrecy. Zero-knowledge proofs can be applied to allow
the blockchain-based traceability system to verify the encrypted traceability records in a
distributed, decentralized and trustless manner without revealing the actual traceability
records. This would enable different companies from different supply chains to share the
same traceability system for their products, while still keeping their trade secrets
Project Coordinator: Dr Chung-Dak SHUM
Approved Funding Amount: HK$ 2.7 M
Project Period: 21 June 2021 - 20 Sep 2022
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