{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to debug programs on the blockchain?","a":"Write smart contracts: Write smart contract code  according to requirements, paying attention to the security and efficiency of the contract. You can use Solidity (Ethereum), C ++ (Changan Chain) and other programming languages."}]}],"pr":"d6c2bfe9c89b669791ec05fa7a04e2f9238762b40356012c9f58b99231ca5aa9"}