{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do smart contracts in blockchain prevent hacker attacks?","a":"Input validation: It is crucial to perform strict input validation in intelligent contracts. Developers should implement comprehensive input validation routines, including checking  data types, boundary conditions, and cleaning user input to prevent malicious data injection and unintended behaviors."}]}],"pr":"77fff8b4d2ab03c20b6c2d3e4fe1c073e7c877846f8f950e5b889d688294d0b7"}