{"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":"Automatic execution: Smart contracts execute transactions automatically according to pre-set conditions and rules, avoiding human error and manipulation."}]}],"pr":"514ee7f01139b1109d7c1f78dba49f5667d1d5e46644d7e979daea2ad3d9e964"}