{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology solve the credibility issue of data?","a":"Decentralized storage: Blockchain technology uses distributed node consensus algorithm to store data on  multiple nodes, avoiding data concentration and reducing the risk of data leakage."}]}],"pr":"15709e1b637da539f58df410f5121e35016015ad05d3b41d100d5fb3a4bade12"}