{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the characteristics of blockchain?","a":"Security: Blockchain uses encryption algorithms such as SHA-256 to protect the security and  integrity of data."}]}],"pr":"0c8c604f86c2eb41aa7d43db91a1dd5710fcc07c3e3b47cea62f38ee4a3160c6"}