Tobacco Traceability and Storage Scheme Based on IPFS+ Consortium Chain

There are many problems with traditional digital supply chains. For example, traceability data such as planting information, processing information, logistics information and distribution information are all stored centrally or by a third party. There are risks of privacy breaches, server security breaches, and termination of operations. In addition, due to the particularity of blockchain, it cannot be used as a traditional database. Some large files and a lot of redundant data are not suitable for direct link. We propose an on-chain and off-chain collaborative storage model. We use consortium chains in conjunction with IPFS (Interplanetary File System). The proposed framework can meet the needs of all parties to share data in the case of distrust. In addition, traceability data is stored safely under the chain, which not only reduces the pressure of blockchain storage, but also meets the needs of consumers for traceability.