{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the shortcomings of blockchain?","a":"Transaction Speed: The transaction processing  speed in blockchain networks is relatively slow because each block needs a certain amount of time to be confirmed. Furthermore, as the scale of the blockchain expands, transaction processing speed may further decrease."}]}],"pr":"eed63f0413b3ea914f01c387e02b22ce064c98ebc91cd9f1cd9a4937c0d7ad58"}