Block chain multi-chain-based lily traceability system and traceability method

The invention relates to a multi-chain lily traceability system and traceability method based on block chains, and belongs to the technical field of fresh flower product traceability. The system comprises a supply chain block chain and five enterprise chains, wherein the enterprise block chains comprise a grower block chain, a sorting center block chain, a storage center block chain, a logistics block chain and a sales block chain. Wherein the supply chain block chain comprises seven traceability main bodies including a lily farmer, a lily sorting center, a lily storage center, a lily transportation enterprise, a lily sales enterprise, a consumer and a supervision department. Each enterprise block chain comprises two traceability subjects, namely an enterprise and a supervision department. According to the invention, the supply chain block chain of the lily is taken as a main chain, five enterprise chains are taken as slave chains, the lily traceability system based on multiple block chains is constructed, th