{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain solve the security issues in data transmission process?","a":"Difficulty in tampering with data: Each block contains a certain amount of transaction data, and blocks  are linked together through hash links, forming a"}]}],"pr":"6f17975a5a57fdf439214530bf4caccecc0b2c334539e4a06d04892847d30780"}