{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the significance of blockchain technology for information security?","a":"User Identity Authentication and Protection: Through its decentralized feature, blockchain technology achieves user identity authentication  and protection, avoiding the risk of hacker attacks on centralized certification systems."}]}],"pr":"7e24d601bf4a5f49dec7b5cc7e56d512924a87f6571b136abd26c725ac93e09c"}