{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do transactions in blockchain ensure security and consistency?","a":"Cryptographic protection: Blockchain  technology uses cryptographic algorithms (such as public keys and private keys) to encrypt and decrypt transaction data, ensuring the security of data transmission and access."}]}],"pr":"9ea452c927c850e98a290cd96d29ee65a59fa6815f6db4d9db4135526561e532"}