{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure data tamper-proof?","a":"Cryptographic technology: Blockchain uses cryptographic technology to protect data security, such as public-private key encryption algorithms. Each participant has a public key and a private key, with the private key used for signing  data and the public key used for verifying signatures. Only those holding the correct private key can modify the data, ensuring the security of the data."}]}],"pr":"b0d8b45b468bfdd4d8483d91f5933819d023c7acfb4cf1ce8eabbe3eca4aaa64"}