{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the double-spending attack implemented in blockchain?","a":"Waiting for confirmation: The attacker waits for honest nodes to confirm the transaction in the blockchain, making it  appear to be legitimate."}]}],"pr":"b8a6f48592022e095a1525ba9ddb7e2592f29d318ba45ee919b44d04bf581c62"}