{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security issues involved in implementing smart contracts in blockchains?","a":"Consensus mechanism attack: The consensus mechanism of a  blockchain network is at the core of ensuring network security and stability. Attackers may attempt to attack the consensus mechanism."}]}],"pr":"1fda5c2573d52555a614133789acad2a14930b46747e676421b21fd7c5ed1035"}