Michael Saylor has warned that internal attempts to rewrite Bitcoin’s core rules pose a greater long‐term threat to the network than rival cryptocurrencies, regulation or any external competitor.
The Strategy Executive Chairman, one of the most high‐profile corporate backers of Bitcoin, used a series of posts on X on Tuesday to argue that the protocol’s consensus rules operate as the cryptocurrency’s “constitution” and must remain largely untouched.
Those rules define how ownership is recorded, how Bitcoin’s fixed supply is enforced, how transactions are finalised and which changes network participants are allowed to make. Saylor said undermining that framework could erode the economic rights of miners, developers, investors, companies, custodians and everyday users.
“Bitcoin has won. Now it must survive victory,” he wrote. “Its gravest threat is not an enemy at the gates, but corruption from within.”
Fears of permanent governance battles
Saylor warned that if one faction managed to alter the protocol for its own benefit, other groups would inevitably try to push through their own changes using the same process. In his view, that would lock Bitcoin into persistent governance battles, discouraging capital, slowing technical progress and weakening network security.
He argued that such a path would leave Bitcoin delivering only “a fraction” of what it could achieve.
Saylor believes Bitcoin could still grow by a factor of 100 and ultimately sit at the heart of global capital markets infrastructure. From that standpoint, he cautioned that a poorly designed rule introduced now could constrain financial products, technologies and forms of economic activity that do not yet exist.
BIP‐110 dispute at the centre
His latest intervention builds on his opposition to Bitcoin Improvement Proposal 110 (BIP‐110), a suggested temporary soft fork that aims to reduce certain types of arbitrary data being written to the blockchain.
Backers of BIP‐110 say tightening limits on some data would ease storage and verification demands for node operators, and help keep Bitcoin focused on monetary transfers rather than inscriptions, tokens or file storage.
Saylor accepts that some on‐chain data may be of limited value or even tied to harmful uses. However, he insists the protocol cannot reliably determine the purpose of transaction data and should not use consensus rules to decide which valid, fee‐paying transactions are entitled to block space.
“Bitcoin does not need guardians of purity,” he wrote in a 18 July article. “It needs guardians of neutrality.”
His latest X thread widened that criticism beyond BIP‐110, targeting proposals to add covenant functionality and to increase block capacity, which he said introduce different categories of risk to Bitcoin’s base layer.
Concerns over fees, complexity and security
Saylor argued that restricting valid transactions would reduce competition for block space and weaken the fee market that miners depend on. By contrast, expanding block size, he said, would dilute the scarcity of block space while pushing up bandwidth and hardware requirements for those running nodes.
He also claimed that covenants – scripting features that can restrict how coins are spent in future – would make consensus rules more complex and create new potential attack surfaces for the network. He stressed that these views reflect his own assessment rather than any settled agreement among Bitcoin developers.
With the block subsidy scheduled to fall by half roughly every 210,000 blocks, Saylor expects miners to rely increasingly on transaction fees. He warned that any measures which suppress demand for block space could squeeze miners’ revenue and undermine the financial incentives that secure the network.
His preferred strategy is to keep Bitcoin’s base layer “simple, neutral, scarce and secure”, while pushing experimentation to second‐layer networks and applications where participation is voluntary and any failures are more contained.
Corporate stake and security push
Saylor’s position carries particular weight with US investors because Strategy has built its corporate strategy around holding Bitcoin and encouraging its adoption by large companies. He has recently argued that corporate participation is essential if Bitcoin is to mature into a global monetary network, putting businesses at the heart of its next stage of development.
Strategy is also one of nine firms that have created the Bitcoin Security Consortium, alongside Anchorage Digital, ARK Invest, BlackRock, Block, Blockstream, Coinbase, Fidelity Digital Assets and Galaxy.
Together they have pledged a total of $15m over three years to support developers and researchers focused on Bitcoin security, including work on potential threats from quantum computing. Each member will allocate its own funding, and the consortium has said it will not direct Bitcoin’s technical roadmap or adopt positions on specific protocol changes.
Saylor maintains that upgrades to Bitcoin should stay rare, conservative and driven by clear necessity. His latest comments place tight control over protocol change, corporate adoption and long‐term security funding as the three central pillars of his broader Bitcoin strategy.
