{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain apply to bill trading?","a":"Transparent traceability system: Based on the blockchain data, the origin and circulation of bills  can be traced transparently, ensuring the security and credibility of bill transactions."}]}],"pr":"91321e0e6a6b5c38ebc8a32654a4448185d181008e9474a6c27939f4dd6ff0a8"}