{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why are messages checked before being sent in a blockchain?","a":"Data privacy protection: Blockchain technology has the characteristics of decentralization and transparency, but it also poses a risk of sensitive  information leakage to some extent. By checking messages, the authenticity of data can be guaranteed while protecting user privacy, avoiding unauthorized access to sensitive information."}]}],"pr":"929ba403c43261572f09bfe379fc75f7746144b3e656f26e1a75d08aab5aac5f"}