{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the scalability issues of blockchain?","a":"Transaction speed limitation: The transaction  processing capability in the blockchain network is limited by the block size and confirmation time. As the transaction volume increases, the processing speed may decrease, leading to transaction congestion and delay."}]}],"pr":"7734556da05d51d33a45d5bd99e840c48ad30d47dc748c31d816d8b5991456c1"}