{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the security and reliability of transactions in smart contracts?","a":"Cryptographic protection: Smart contracts use cryptographic principles, such as digital signatures and hash functions, to ensure the integrity and confidentiality of transactions. Digital signatures can ensure the authenticity of transactions and authentication of  the initiator, while hash functions can ensure the integrity of transaction data."}]}],"pr":"ba2c9d595401960724fe8e03ab9c09e62287961997bd709c09529ab11405ee92"}