{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the security of smart contracts ensured in blockchain?","a":"Decentralization: Blockchain adopts  a decentralized network architecture, with data stored on multiple nodes, avoiding a single centralized control and thereby reducing the risk of attack."}]}],"pr":"b69281348d2b5593780433331e7999188cfa9f50da347f5c87658b624da02c00"}