{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the characteristics of versioned transactions in blockchain?","a":"Decentralization: Blockchain transactions no longer rely on centralized authority institutions for recording and management, but are maintained collectively by distributed nodes, reducing the risk of  single-point failure."}]}],"pr":"011580b06ca0e8add69a667e110a49fddbef31a0aeba009f1edc58e558334002"}