{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology protect the identity security of nodes?","a":"Encryption algorithms: Data in blockchain is stored in encrypted form, and each node has a unique private key  and public key. The private key is used for signing and verifying transactions, ensuring the authenticity and integrity of the data; while the public key is used for storing and transmitting data, ensuring the security of the data."}]}],"pr":"9f8db6ce31e72f7d9e753b76c3c295cd21c27f8d48ab2f4c20ac187921efaa70"}