One of the most consequential yet least visible levers in Bitcoin governance just got pulled. Foundry USA, one of the largest Bitcoin mining pool operators in North America, has formally asked its mining customers to signal their support for Bitcoin Improvement Proposal 110 — commonly known as BIP-110 — a hotly contested protocol change that would place new restrictions on how much arbitrary data miners can include in a single Bitcoin transaction.
The move matters because miner signaling is not a passive act in the Bitcoin ecosystem. When mining pools coordinate their hash power behind a specific proposal, they are exercising one of the most direct forms of influence available in a system designed to resist centralized control. Foundry is not simply circulating a survey. It is mobilizing the economic weight of its customer base — professional mining operations whose hardware collectively represents a meaningful share of Bitcoin's global hash rate — toward a governance outcome that could reshape how the base layer functions.
What BIP-110 Actually Does
BIP-110 targets the amount of data that can be embedded within a Bitcoin transaction. Since the advent of the Ordinals protocol in early 2023, developers and entrepreneurs have found creative ways to inscribe images, text, and other arbitrary data into Bitcoin's transaction structure, specifically by exploiting the witness data field introduced by Segregated Witness. This spawned an entirely new market for Bitcoin-native digital artifacts — but it also reignited an old debate about what the blockchain is actually for.
Critics of data-heavy inscriptions argue that bloating blocks with non-financial content drives up transaction fees for ordinary users, increases the storage burden on node operators, and degrades Bitcoin's core function as a monetary settlement layer. Proponents counter that the market itself — miners and users paying fees — should determine what goes into a block, and that restricting data types sets a dangerous precedent for protocol-level censorship.
BIP-110 sits squarely in the middle of this philosophical fault line. By proposing to shrink the ceiling on how much data a transaction can carry, it would effectively make large inscriptions economically impractical or technically impossible, depending on implementation. The proposal is described as actively debated within the Bitcoin developer community, which means it has neither achieved the rough consensus typically required for protocol changes nor been definitively shelved.
Why Miner Signaling Is the Pivotal Variable
Bitcoin governance does not have a board of directors, a CEO, or a regulatory body that can mandate changes. Protocol upgrades traditionally require a combination of developer consensus, node operator adoption, and — in many historical cases — explicit miner signaling through block headers. The 2017 SegWit activation and the subsequent contentious hard fork that produced Bitcoin Cash both illustrated in stark terms how miner signaling can accelerate, delay, or fracture upgrade paths.
Foundry's decision to actively solicit votes from its customers is therefore a significant escalation in the BIP-110 debate. Rather than waiting for organic developer consensus to crystalize, the pool is proactively gauging whether the economic actors who secure the network are willing to endorse a data-restriction regime. If a critical mass of Foundry's mining customers signals support, it would hand BIP-110 advocates a powerful piece of political ammunition: demonstrated buy-in from the industrial class that underwrites Bitcoin's security budget.
It also puts pressure on competing mining pools to clarify their own positions. Pools that remain silent on BIP-110 after Foundry has formally polled its base will face pointed questions about where they stand — and why. The governance dynamics of Bitcoin mean that even pools opposed to BIP-110 may feel compelled to engage publicly, which in itself advances the debate toward a resolution of some kind.
The Broader Infrastructure Stakes
The timing is not incidental. Bitcoin's block space has become genuinely contested territory in a way it simply was not before 2023. Fee markets have seen extraordinary volatility tied to inscription activity, and node operators running on modest hardware have felt the downstream effects of persistently larger blocks. For mining pools like Foundry that sit at the intersection of commercial mining services and protocol stewardship, the pressure to take positions on contentious governance questions is now unavoidable.
What Foundry's move signals above all else is that the era of passive neutrality for major mining infrastructure providers may be ending. As Bitcoin matures as both a financial network and a data layer — roles that are increasingly in tension — the industrial actors who build and operate its physical substrate will be expected to have views, express them, and mobilize their communities accordingly. BIP-110 may or may not pass. But the method Foundry has chosen to engage its customers signals something durable: mining pools are becoming active participants in Bitcoin's constitutional debates, not just processors of blocks.
The outcome of this vote, and whether it translates into on-chain signaling, will be a closely watched indicator of where the professional mining industry stands on the question of what Bitcoin's base layer should — and should not — be used for.
Written by the editorial team — independent journalism powered by Bitcoin News.