{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the security of blockchain ensured?","a":"Decentralization: Blockchain adopts a decentralized network  structure, where data is distributed across computers worldwide (nodes) without a centralized storage and management system. This structure makes the blockchain system less vulnerable to external attacks, as attackers need to break into all nodes, which is virtually impossible in practice."}]}],"pr":"a82bb025487b38d1f4416466f5ce668dafc0a7f904a1eca4821f187a9e7a34e7"}