Adam Back Warns BIP-110 Could Trigger a Bitcoin Minority Fork

Blockstream CEO Adam Back has strongly criticized BIP-110, describing the proposal as technically flawed and warning that its activation could lead to a contentious Bitcoin fork. His comments, made on June 8, came as debate around the Bitcoin Improvement Proposal intensified across the cryptocurrency community.

BIP-110 aims to limit non-financial data stored in Bitcoin transactions through a user-activated soft fork (UASF). Unlike previous major Bitcoin upgrades, the proposal seeks to move forward without broad miner consensus, a strategy that has sparked significant controversy among developers, miners, and Bitcoin supporters.

Back argued that comparisons between BIP-110 and SegWit are inaccurate. He noted that SegWit’s successful activation in 2017 followed years of collaboration among developers, miners, businesses, and node operators. Although SegWit faced challenges during its rollout, Back emphasized that widespread ecosystem support had already been established before activation.

According to Back, BIP-110 lacks both technical justification and community consensus. Supporters claim the proposal would reduce blockchain spam and improve network efficiency, but Back dismissed those arguments, stating that the proposal would fail to achieve its intended goals. He warned that forcing activation through a UASF without broad agreement could result in a minority chain rather than a legitimate Bitcoin network upgrade.

MicroStrategy Executive Chairman Michael Saylor also expressed concerns about the proposal, describing BIP-110 as one of the most significant self-inflicted risks facing the Bitcoin protocol. The growing disagreement has further divided the Bitcoin community, with critics accusing some advocates of misrepresenting historical events surrounding previous Bitcoin upgrades.

Back reinforced his position through social media, posting an image that mocked the proposal and suggested that Bitcoin’s consensus process does not recognize the restrictions BIP-110 seeks to impose. He argued that attempting to enforce such changes without ecosystem support would only create fragmentation within the network.

Despite the ongoing controversy, Back remains highly optimistic about Bitcoin’s long-term outlook. He continues to advocate for Bitcoin as sound money and believes its fundamental value proposition remains intact regardless of the current protocol debate.

As the potential activation window for BIP-110 narrows, support among node operators remains limited to low single-digit percentages. The coming months will be critical in determining whether the proposal gains traction or validates Back’s prediction that it could lead to a minority Bitcoin fork.