{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Where are the bottlenecks in blockchain security?","a":"Security of consensus mechanism: The security of blockchain is greatly dependent on the design of the consensus mechanism, such as PoW (Proof of Work) and PoS (Proof of Stake). If attackers can acquire sufficient computing power or stakes, they may attack the consensus mechanism and thereby tamper with blockchain data."}]}]}