{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can the fairness and security of program execution be ensured in a blockchain?","a":"The blockchain is a transparent system where all transactions are recorded publicly. Participants in the network can verify  the authenticity"}]}],"pr":"4818a93bacdcec316512063f036d0695638e4c474a8f00ad7bb7fefae35c82e2"}