{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain's data storage methods?","a":"High transparency: All transaction  records on the blockchain can be traced, achieving public transparency in data."}]}],"pr":"d56ed49738a55f50824f4b73877070dbedd2ff7161ba3648610d26fa68c33d14"}