Blockchain technology and traceability in the agri-food industry

Distributed Ledgers are becoming commonly used technologies to trace agri-food supply chains in view of their safety, immutability, transparency and scalability. In the present review, we discuss the most relevant case studies of agri-food supply chain traceability using blockchain and other Distributed Ledgers technologies. Considering that each supply chain actually has specific requests of traceability, we here suggest a logical scheme in order to favour the identification of the blockchain structure that is more appropriate for each agri-food supply chain, including the identification of supply chains where complex blockchain technologies are actually not necessary.