Bitcoin Halving Effect: Miners Shift from Block Rewards to Transaction Fees, Network Security and Mining Hardware Market Face Transformation

Bitcoin Halving Effect Emerges, Miner Revenue Structure Accelerates Transformation

In 2024, as Bitcoin broke through the $100,000 mark, the profound impact of its fourth halving event is gradually coming to light. As a core component of the cryptocurrency ecosystem, the revenue structure of miners is undergoing an unprecedented transformation: the continuous reduction of block rewards is forcing miners to shift their profit focus from "mining rewards" to "transaction fees." This change not only reshapes miners' business models but also has profound implications for Bitcoin network security and the mining hardware market landscape.

Post-Halving Revenue Balance: From Block Rewards to Fees

Bitcoin's halving mechanism reduces block rewards by 50% every four years, aiming to control supply and simulate scarcity. After the fourth halving, each block reward has dropped to 3.125 BTC. According to CoinGecko data, block rewards accounted for over 90% of miners' total revenue before the halving, but this proportion has now significantly declined. Meanwhile, with the rise of the Ordinals protocol, BRC-20 tokens, and Layer 2 solutions within the Bitcoin ecosystem, on-chain transaction volume has surged, and transaction fees have rapidly increased as a share of miner revenue. Reports indicate that during peak periods, fee income has accounted for 30% to 40% of miners' daily revenue, compared to typically less than 5% before the halving.

This structural shift means miners can no longer rely solely on Bitcoin price increases to maintain profitability; they need to manage transaction packaging strategies more carefully. For example, mining pools are prioritizing high-fee transactions and even introducing "fee market" tools that allow users to bid for on-chain inclusion. This trend is gradually evolving the Bitcoin network from a "fixed reward" system to a "service fee" system, similar to settlement networks in traditional finance.

Network Security: The Battle Between Hashrate Centralization and Decentralization

The transformation of miner revenue structures directly impacts the cornerstone of Bitcoin network security—hashrate. After the halving, some inefficient mining machines were forced to shut down due to inability to cover electricity and operational costs, leading to a temporary short-term decline in total network hashrate. However, with increased fee income, the profitability of efficient mining machines was sustained, and hashrate subsequently recovered to reach new highs. According to Blockchain.com data, total network hashrate stabilized near historical highs within months after the halving, indicating the market has initially absorbed the halving shock.

But a concern is that the revenue structure transformation may accelerate hashrate centralization. Large mining farms, leveraging economies of scale and low-cost electricity, can withstand higher operational pressures and capture more revenue through optimized fee strategies. In contrast, small-scale or home miners face further compression of their survival space in an environment of intensified fee competition. This centralization trend could weaken Bitcoin's decentralization characteristic, increasing the risk of a 51% attack. However, some argue that a mature fee market will incentivize more participants to join mining pools, thereby enhancing the network's overall resilience.

Mining Hardware Market: Elimination Race Accelerates, Energy Efficiency Becomes Key

The transformation of miner revenue structures directly impacts the mining hardware market. After the halving, the profitability of older mining machines (such as the Antminer S9 series) has sharply deteriorated, as their high power consumption makes it difficult to cover costs in a low block reward environment. According to industry reports, the break-even price for such machines has risen significantly, leading to a flood of second-hand mining machines on the market and a sharp drop in prices. Meanwhile, demand for new high-efficiency mining machines (such as the Antminer S21 and Whatsminer M60 series) has surged, with energy efficiency ratio (J/TH) becoming the core metric for miners' purchasing decisions.

Mining machine manufacturers thus face dual pressures: on one hand, they need to accelerate the development of more energy-efficient chips to adapt to the post-halving market; on the other hand, they must digest inventory of older models. Reports indicate that leading manufacturers like Bitmain and Whatsminer have launched customized products for the post-halving market, emphasizing a balance between low power consumption and high hashrate. Additionally, the trend of mining hardware financialization is accelerating, with some miners using machine-backed loans or hashrate futures to hedge against revenue volatility risks.

Future Outlook: Sustainability of Fee-Driven Revenue

The transformation of miner revenue structures is essentially an evolution of Bitcoin's economic model from "inflation subsidy" to "transaction fee market." The sustainability of this process depends on the activity level of on-chain transactions and the stability of fee levels. If Bitcoin ecosystem applications continue to expand (e.g., DeFi, NFTs, cross-border payments), fee income could become a stable pillar for miners, reducing reliance on block rewards. Conversely, if on-chain activity shrinks, miners may face a sharp revenue decline, threatening network security.

In the long term, this transformation will push the Bitcoin network towards a more mature financial infrastructure. The role of miners will shift from "currency issuers" to "transaction validators," with their business models becoming more similar to node operators in traditional payment networks. For investors, the diversification of miner revenue may reduce the impact of Bitcoin price volatility on mining company stocks, but the governance risks from hashrate centralization must be watched.

In summary, the Bitcoin halving effect is profoundly reshaping miner revenue structures, and this change presents both challenges and opportunities. Miners, mining hardware manufacturers, and network participants must collectively adapt to this new normal to maintain the long-term health and security of the Bitcoin ecosystem.