{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How are storage fees calculated in a blockchain?","a":"Network bandwidth: The bandwidth resources  required by nodes during the process of downloading and uploading data."}]}],"pr":"e9b91f459d077272669d578d94350f470e3beba89c54dea714573bfbd111cb80"}