{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the exchange module in blockchain ensure the security of accounts?","a":"Cryptographic algorithms: The exchange uses cryptographic technology to encrypt  the storage and transmission of user account information and transaction data. Only users with legitimate private keys can decrypt and operate their own accounts, thereby ensuring the security of the accounts."}]}],"pr":"c11a5b2dcd5315d03bea86bcc66d3ae3df497572990aa1c071288ce94da3fd87"}