{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology solve the data traceability problem in supply chain management?","a":"Distributed ledger: Blockchain technology adopts a distributed  ledger, distributing transaction records and event histories in the supply chain across various nodes, achieving data sharing and synchronization, and facilitating real-time query participation."}]}],"pr":"4c0d3f4a088e8688546f45bb1c214331334c013408383693cd9e9c9c40a1d748"}