{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can the communication overhead be reduced in a blockchain system with multiple shards?","a":"Design an efficient communication protocol, such as a communication mechanism based on Gossip Protocol, which enables nodes to effectively reduce redundant data transmission  when propagating new blocks and transactions."}]}],"pr":"d520d02dd212e3661691da2dcd516b7cf4114c64174a9c12739487f2ada670d7"}