{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the data security of the blockchain ensured?","a":"Decentralized structure: The data storage of blockchain is  distributed across multiple nodes in the network rather than a single central server. This decentralized structure ensures that any data tampering on a node will be detected by other nodes, thereby ensuring the authenticity and security of the data."}]}],"pr":"4f009a9c531ae961351e90fdde1616154f0f294a91fded0f5c9fc4ae10718e4c"}