{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to use the public API interfaces of a blockchain?","a":"Handle  the response received from the API calls, which may include data extraction, error"}]}],"pr":"e064331e8161ec219863b658bb5391d9cacb429f89c94580e43abdadb5dc8286"}