Saylor Slams BIP 110 as Threat to Bitcoin Neutrality

Bitcoin developer Michael Saylor has expressed strong opposition to BIP 110, a proposal that aims to temporarily restrict certain types of data stored on the Bitcoin blockchain. Saylor, executive chairman of Strategy (formerly MicroStrategy), argues that the proposal would undermine protocol neutrality and create a greater threat to Bitcoin than unwanted blockchain data.

According to the proposal, seven temporary consensus restrictions would be imposed to reduce arbitrary data stored through Bitcoin transactions. These restrictions include capping some script sizes, restricting Taproot control blocks, and preventing spending through undefined witness versions. Proponents of BIP 110 claim that these measures could reduce node costs and keep block space focused on payments.

Saylor disagrees with this approach, stating that it would reject valid, fee-paying activity without measuring the costs those transactions impose. He also objects to the use of a 55% miner-signaling threshold, which he believes is too low for a disputed change. In contrast, Saylor supports market fees and voluntary relay policies as a more neutral solution.

Saylor's concerns are not limited to the technical implications of BIP 110. He also warns that it would close reserved technical options that later upgrades could use, including paths associated with BitVM, an experimental design for complex Bitcoin agreements without a trusted intermediary.