{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to data traceability management?","a":"Decentralized storage: Blockchain technology  adopts a distributed node consensus mechanism, storing data on multiple nodes, thus avoiding a single centralized data storage and management system, and improving the security of the data."}]}],"pr":"bae9c92deaadc1384cc964367a2b8207b1c97fbde64545f86556fc827337a6cd"}