{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to calculate the cost of a tree in a blockchain?","a":"Network cost: The operation of the blockchain network requires a stable network environment, therefore, investment in network resources such as bandwidth and  server maintenance is necessary."}]}],"pr":"b6b855b278c7f19379d77ac05ed917052318aa6eca1c5e48886ac4cf8a28064a"}