{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In blockchain, how can we ensure the safety and reliability of cross-program calls?","a":"Adopting encryption algorithms and digital signatures: Encrypt the data during the cross-program call process to ensure the security of the data during transmission. Meanwhile,  use digital signatures to verify the integrity and source of the data, preventing tampering during the transmission process."}]}],"pr":"0736cdabeea0f4d3ce9afc48688b6c5af7a7b525ca5a3dafa09e89da9ef5bd57"}