{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain address the issues of data immutability and on-chain smart contract security?","a":"Automated execution rules: Smart contracts are pre-written computer programs that automatically execute with rules for processing and operating data. These rules are determined when the contract is deployed and cannot be  changed during the execution process."}]}],"pr":"f9188b626d3ba265a3b3eaa79d23fa6c4fc4fe507b5d43de85a56e228dc4cebf"}