{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can double-spending attacks be implemented in a blockchain?","a":"The attacker utilizes their computational advantage to create a new branch chain in the blockchain network and  creates a block containing transaction A on the branch chain."}]}],"pr":"420d7cd08c8d24f906c23b5a486906786eb6505847cb997a1fd79a116f463846"}