{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the distributed storage of blockchain improve data security?","a":"The distributed  nature of blockchain enables transparent and traceable data storage"}]}],"pr":"5c2c00449df4d340cfbd11adf3f6911fd573ad550910fa4d71cade3567077184"}