{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do relays in a blockchain observe and determine whether a transaction batch is profitable?","a":"Market price fluctuations: Relayers closely monitor fluctuations  in exchange rates between cryptocurrencies and fiat currencies to capture profitable trading opportunities in a timely manner."}]}],"pr":"78acee90c2ac39662a1b750b402ddb8105a7a12f936369332a4f5352b06ae549"}