{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do you handle permission control in a blockchain network?","a":"Digital Signatures: Digital signature technology is used to ensure the authenticity and integrity of data. In a blockchain network, each participant (node) can digitally sign transactions or data. By verifying the signature, we can ensure the integrity and authenticity of the data during transmission, thereby  achieving access control for the data within the network."}]}],"pr":"b5167d7a18a054a7fa1f56c946596bfa2c1e3ecb1934630cf5638465162525dd"}