Bitcoin’s BIP 110 Upgrade Faces Deadline as Miner Support Remains at Zero

Bitcoin’s BIP 110 proposal, which aims to restrict non-financial data stored on the blockchain, is approaching a key deadline with almost no miner support. While the proposal has generated significant debate, its limited adoption suggests strong resistance within the broader Bitcoin ecosystem.

BIP 110, officially known as the Reduced Data Temporary Soft Fork, focuses on a long-running debate over the purpose of Bitcoin’s block space and whether the network should allow large amounts of non-monetary data.

Bitcoin transactions can include both financial transfers and additional data. The OP_RETURN field acts as a built-in space for attaching small pieces of information to transactions, while other methods allow users to embed larger data files through Bitcoin script or witness data. These mechanisms have been used for applications such as Ordinals, inscriptions, and token-related metadata.

The proposed soft fork would temporarily limit these capabilities for one year. It would restore a smaller OP_RETURN size limit, prevent most arbitrary data entries larger than 256 bytes, and restrict certain script-based methods that are primarily used for storing information rather than transferring value.

Supporters argue that the changes would help keep Bitcoin focused on payments, reduce pressure on node operators, and prevent excessive blockchain growth. Opponents argue that the proposal goes beyond a technical adjustment and creates a consensus rule that determines which types of transactions should be considered acceptable.

Several prominent Bitcoin figures have criticized the proposal. Strategy founder Michael Saylor argued that the issue is being elevated into a much larger governance conflict, saying that turning a debate over spam into a consensus change could create greater risks for Bitcoin than the original problem itself. He warned that changing rules around valid fee-paying transactions could set a dangerous precedent.

Blockstream co-founder Adam Back, whose Hashcash system is referenced in Bitcoin’s original white paper, also opposed BIP 110. He argued that Bitcoin’s decentralized nature means participants cannot simply impose changes on the network without broad agreement, suggesting that those who strongly support the proposal could create their own alternative chain instead.

The proposal’s support metrics reflect the resistance it faces. Unlike traditional soft forks that typically require broad miner approval, BIP 110 uses a user-activated soft fork model, allowing nodes to enforce the change even without miner backing. The proposal requires a 55% miner signaling threshold, significantly lower than the 95% level used in many previous upgrades.

Despite the lower requirement, miner support has remained extremely limited. Signaling has never exceeded roughly 1% and currently stands at zero, with no major mining pools publicly supporting the proposal.

Node adoption is also minimal, remaining in the low single digits and largely driven by users running Bitcoin Knots, an alternative implementation to the widely used Bitcoin Core software.

The activation timeline continues regardless of the lack of support. The current signaling window runs from block 957,600 to 959,615, followed by a voluntary lock-in deadline at block 961,542, which is expected in early August.

If activated, nodes running BIP 110 software would begin rejecting blocks that do not support the rule change, with activation expected around September. However, with only a small percentage of nodes enforcing the rule and virtually no miner participation, the outcome would likely be a minority chain rather than a network-wide upgrade.

Bitcoin’s resistance to change is not controlled by a single authority or written into a formal governance system. Instead, consensus emerges through thousands of independent users, miners, and node operators choosing whether to adopt proposed changes.

The debate over blockchain spam remains significant. Since recent changes expanded the ability to store non-financial data, Bitcoin has seen increased use as a data storage layer rather than solely as a payment network. Supporters of BIP 110 believe this threatens Bitcoin’s original purpose, while critics argue that restricting valid transactions could introduce unnecessary risks.

For now, the data suggests that the network has not reached consensus around BIP 110, reinforcing Bitcoin’s cautious approach to major protocol changes.

About The Author

ctleditor

See author's posts