{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do validation nodes in a blockchain determine if they have become leaders?","a":"When a validation node successfully solves a block's puzzle (also known as  discovering a new block), it broadcasts the block to the entire blockchain network. During this time, other validation nodes are also trying to solve the same puzzle."}]}],"pr":"3b716cf74992ed86d6d1fd225c57b1a93ed6d84afa5a0f582f10e696af3895f1"}