{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain solve the problem of data tampering?","a":"Immutability: Once data is recorded in the blockchain, it cannot be changed or deleted. This ensures that once a transaction is  verified and added to the blockchain, it"}]}],"pr":"fb19c6f6a81eeb9a4355bf58def2e055cd0c95f15ad33b5aebab56c5192c729f"}