{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How are transaction fees determined in a blockchain?","a":"Transaction fee: In order to encourage miners to confirm transactions as soon as possible, the blockchain  system usually sets up a transaction fee. When initiating a transaction, users need to pay a certain percentage of the fee to the miner."}]}],"pr":"28551d3e4734b5ffe54ff569cea554c3ebe5766e6a6bea6bb9261a26950bc7ec"}