{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to set up a new transaction reward activity in a blockchain?","a":"Write smart contracts: According to the reward rules, write corresponding smart contract code to execute the  reward activity. The smart contract code must be secure, reliable, and able to correctly execute the reward activity."}]}],"pr":"0cd7364b336e91156858c5ad8b6ac53c2e957905d6b5651a947a89fc7a6da1cd"}