{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to prepare collection data in a blockchain?","a":"Design the data structure: On the selected blockchain platform, design the data structure of the  collection. This"}]}],"pr":"ca4ed35a36fe4693685e83c5ed302993671af354bc1dd11352697615b1fa5297"}