{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the limitations on the number of nodes in a blockchain?","a":"Consensus mechanism: The consensus mechanism in a blockchain system affects the number of nodes.  For example, under certain consensus mechanisms, nodes need to complete a certain amount of computational tasks before they can participate in the consensus process."}]}],"pr":"245249f871f4a88c6b498fd529d58fc0518b94348796417c28530147b2c46ea4"}