{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the main consensus algorithms for blockchain?","a":"Proof of Work (PoW): This  is the earliest consensus algorithm applied to Bitcoin, where miners need to solve complex mathematical problems to compete for account rights. The advantage of PoW is high security, but its disadvantage is slow speed and huge energy consumption."}]}],"pr":"7f11d875058945b9768746cb033bb26ef53a2f96bc12284560d23f1aefa84aa4"}