Modeling Multi-Layer Access Control Policies of a Hyperledger-Fabric-Based Agriculture Supply Chain

Transparency and immutability properties of blockchains enhance traceability and trust in supply chains. However, supply chain participants resist storing most data on blockchains due to business confidentiality concerns. Permissioned blockchains can partly address such concerns. However, even on a permissioned blockchain, it is nontrivial to determine who can see what data given multiple access c...