Michael Siler opposes Bitcoin consensus reform and promotes a neutral foundation

Bitcoin faces internal consensus battle: Michael Siler warns of risk of protocol change

For years, Bitcoin has faced external attacks from regulators, hostile governments and the chain of competition. But Strategy founder Michael Siler now points out that he believes the more deadly danger lies in internal factions-groups that try to rewrite the rules of online consensus. In a market analysis report, Thaler compared Bitcoin's consensus mechanism to a constitution and pointed out that proposals such as BIP-110, an additional contract mechanism, and block size expansion would weaken transaction freedom and undermine block space scarcity and increase verification costs.

Thaler's comments come as Bitcoin protocol development continues to split into multiple competing camps, each proposing upgrades that could change the incentives for the Internet economy. He believes that these technical proposals directly point to a trend that weakens the fee market-as block rewards are halved for every 210,000 blocks, miners 'income will be threatened. Without a robust fee market, the long-term security budget that underpins Bitcoin's proof-of-work could be eroded.

Fee Market and Long-term Security

Thaler's core thesis is that Bitcoin's security model relies on transaction fees to continue to grow as block subsidies decrease. At the current pace, the block rewards miners face are decreasing every four years, making fees account for an increasing proportion of their income. If consensus changes accidentally weaken on-chain fee pressure by expanding capacity or adding complex spending conditions, miners may face insufficient funds and lack motivation to use computing power to ensure network security. This is not a distant assumption, but a gradual process that lasts for decades that could reshape the resilience of the network.

The debate is similar to the views held in the early block-size wars, when forking Bitcoin Cash and other forges caused communities to divide. This time, the proposal is more refined, but the fundamental contradiction is the same: how much complexity should the base layer tolerate before it stops acting as currency and starts acting like a permissive settlement layer? Thaler's position is that every time an opcode or contract script is added, the attack surface widens and may even introduce vulnerabilities that are difficult to detect even after exhaustive review.

Keep the base layer simple and neutral

Thaler advocated establishing a "simple, neutral, scarce and safe" foundation layer. In his view, innovation should occur at the edge-that is, in second-layer networks, sidechains and applications that do not change the core consensus of Bitcoin. This view is not new, but it takes on even more weight when it comes from the mouth of a well-known corporate holder who has repeatedly used his company's balance sheet to bet on the long-term value of Bitcoin. He wants protocol changes to remain conservative, rare, and only made when absolutely necessary, and warns that even well-intentioned upgrades could erode Bitcoin's attributes as a reliable store of value.

This idea has been reflected in the market. While Bitcoin's fundamentals remain deliberately limited, innovation continues elsewhere. The explosive growth of real-world asset tokenization and the rise of Bitcoin's second-layer network suggest that builders are happy to develop around a minimized basic layer. Siler's comments were essentially telling developers and investors that trying to squeeze more functionality into the Bitcoin protocol itself could undermine what it was originally designed to protect.

Uncertainty in protocol governance

Still, not everyone agrees with the delineation of boundaries. Some developers believe that the contract mechanism can achieve de-trusted bridging and efficient capacity expansion solutions without sacrificing security. Others point out that Bitcoin governance is essentially social rather than on-chain decision-making, so change requires broad and rough consensus-which is difficult to measure. Siler's tough stance may inspire miners and large holders, but it may also alienate those who believe Bitcoin must adjust to remain competitive with programmable blockchain.

It is obvious that this discussion will not go away. As Bitcoin block subsidies continue to decrease, the incentives surrounding its consensus rules will only intensify. Siler's warning adds a strong voice to the camp that "simplicity is Bitcoin's most enduring feature", but the community still needs to find a balance between conservatism and evolution-a debate that is likely to continue well into the next few halving cycles.