According to Glassnode, Bitcoin miner revenue streams are changing significantly, driven primarily by transaction fees. In early 2024, the share of miner revenue derived from transaction fees peaked at nearly 72% in April before stabilizing at a lower level. This change is related to the launch of Runes during the halving period, indicating an increase in transaction processing demand. Historical data shows that surges in fee revenue are often associated with price fluctuations or network activity. Recent trends show that miners can profit from transaction fees when Bitcoin prices and network activity increase, highlighting the critical role transaction fees play in miners' revenue. Understanding these trends is important to predict the financial health of miners and the economy of the network.