Arild Thorsby

How much time you got? Here’s a few ways that BIP 110 damages Bitcoin: 1) Kills scaling and programmability -Bans OP_IF in Tapscripts that destroys MAST, covenants, Ark, BitVM, channel factories, statechains, and almost every future L2 roadmap. -Removes the foundation for Schnorr and Taproot efficiency gains (30–60% smaller multisig, private scripts). -We do not win if we cannot scale 2) Creates worse spam vectors -Forces spammers into fake-pubkey P2WSH multisigs and other unprunable vectors -Results in permanent utxo bloat instead of prunable OR, which increases node costs, slows sync times, and centralizes running a node. -Every new filter just shifts the attack vector to somewhere more harmful 3) Breaks legitimate use cases and existing users -Makes ~560,000+ real taproot spends (vaults, HTLCs, lightning, decaying multisigs) unspendable on the BIP 110 chain after activation. -Retroactively freezes or devalues tens of millions of utxos that belong to real holders, effective confiscation for those users. 4) Chain split risk -Zero miner signaling plus uasf activation will result in an automatic split when miners keep mining data for fees. -Creates a low-hashrate minority chain with no economic support. Easy 51% attacks, reorgs, and confusion. 5) Destroys rough consensus and governance -Trades public debate, mailing list, and proper review for a single dev pushing directly to main with no review. -Sets precedent that any small group can uasf contentious rules and threaten to split the chain. -Turns Bitcoin development into personality-driven drama instead of technical merit. 7) Hurts adoption and economic security -Alienates builders, institutions, and new users. -Makes Bitcoin look unstable and ruled by moral panic. -Reduces long-term fee security budget by killing L2 growth. 7) Security and centralization risks -Forces constant filter updates and centralizes policy in one maintainer. -Increases attack surface (new consensus rules = new bugs, reorg risks). -Makes running a node more expensive due to forced utxo bloat. 8) Sets terrible precedent -Normalizes retroactive rule changes and moralistic censorship. -Opens the door for future forks over what small group decides is“bad data” -Weakens Bitcoin’s core promise of immutability and permissionlessness. Bottom line: BIP 110 doesn’t “fix” spam, it redirects it into worse forms, breaks scaling tools, risks a split, and sets a dangerous precedent. It’s anything but conservative and completely undermines Bitcoin as global money. It’s radical sabotage dressed as purity.