{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do smart contracts in blockchain promote the security and transparency of transactions?","a":"Cryptographic algorithms: Smart contracts use cryptographic technologies such as digital signatures and hash  functions to ensure the confidentiality and integrity of transaction information. This makes it impossible to tamper with or forge transactions without authorization."}]}],"pr":"06edc386a583ce2b41f9ed0b498d75cf0a28975c0afe7821a5d6a2962e326aa2"}