{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can the security of transactions be ensured in a blockchain?","a":"Encryption technology: Blockchain uses encryption algorithms (such as SHA-256) to encrypt  transaction data, ensuring the security and integrity of the data. In addition, encryption technology can also prevent the tampering of transaction information."}]}],"pr":"e6b28e7a337751a0a18c5decb9232202628dfa747485c2b12c3b26e5a7e7d459"}