In terms of price performance, Bitcoin (BTC) delivered a mediocre result for the month of September. BTC is already up nearly 10% in the first four days of October 2021. Despite the price drop, BTC miner revenue increased significantly last month. According to Glassnode, an on-chain data provider, Bitcoin miners earned a good $40 million per day in revenue over the last month. Many market analysts are bullish on Bitcoin for the fourth quarter of 2021.