{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why do we need to consider forward and backward compatibility when updating and adding new features to blockchain technology?","a":"Ensuring data consistency: Forward and backward compatibility ensure that the blockchain system maintains data consistency across different versions. This is crucial for preventing data inconsistencies  or discrepancies that may arise due to incompatible updates."}]}],"pr":"b0d8924427a380d737f78a9ee7677e4c6e8bb41a4652c257a9ba49c31421b935"}