Bitcoin BIP-110 Debate Intensifies as Signaling Blocks Rise

The debate surrounding Bitcoin Improvement Proposal 110, or BIP-110, intensified after Farside Investors reported that 17 new signaling blocks had been produced on July 9, 2026, triggering automated monitoring alerts. The development comes as Bitcoin traded near $62,821, while technical indicators showed support around the 50-day exponential moving average near $62,386 and a bearish MACD crossover.

BIP-110 proposes a soft-fork change to Bitcoin’s consensus rules that would tighten restrictions on what constitutes a valid block. Existing Bitcoin nodes would continue to recognize BIP-110 blocks as valid, but some transactions and outputs that are currently permitted could become invalid under the new rules.

Why BIP-110 Is Controversial

Unlike many previous Bitcoin soft forks that achieved broad support, BIP-110 has become highly contentious within the technical community. Critics argue that activating a significant rule change without overwhelming consensus could increase the risk of a temporary or lasting chain split, potentially creating a separate cryptocurrency.

Supporters generally view the proposal as a way to curb blockchain spam, particularly large data inscriptions that have occupied block space since 2023. Some advocates also believe existing Bitcoin software has not done enough to discourage such activity.

Technical Changes Proposed

BIP-110 would introduce stricter limits in several areas of the protocol.

• Standard transaction outputs would be limited to 34 bytes, with OP_RETURN outputs capped at 83 bytes.
• Data pushes and witness elements would generally be limited to 256 bytes.
• Spending undefined witness or Tapleaf versions would become invalid.
• Several Taproot features, including certain annexes, oversized control blocks, and opcodes such as OP_SUCCESS, OP_IF, and OP_NOTIF in tapscript, would be prohibited.

The Bitcoin Knots client is currently the most prominent node software implementing these rules and is designed to enforce them once activation occurs.

Potential Wallet Risks

One of the most significant concerns is that some wallets supporting Miniscript could allow users to create addresses that remain valid for receiving funds but become impossible to spend under BIP-110 rules. Funds sent to such outputs after activation could effectively become inaccessible.

The proposal would also ban the creation of certain output types, including new pay-to-public-key outputs, although spending from existing ones would still be allowed. More than 1.7 million bitcoin currently reside in such outputs, making the restriction unprecedented in Bitcoin’s history.

Could Funds Be Frozen?

BIP-110 includes two safeguards intended to reduce the risk of permanent loss.

• The rules would expire after 52,416 blocks, or roughly one year.
• Older outputs would be grandfathered in, meaning the new restrictions would apply only to outputs created after activation.

Even with these safeguards, analysts have warned that users could still lose funds through incompatible scripts, pre-signed transactions, or complex spending arrangements that span the activation period.

How Activation Works

BIP-110 can activate through miner signaling if 55% of blocks in a two-week difficulty period signal support, or through a mandatory signaling mechanism beginning around block 961,632, expected in August 2026. After a further grace period, the new rules would become active.

Broader Governance Questions

The proposal has reopened long-running debates about Bitcoin governance. Supporters argue that stricter rules are needed to discourage non-monetary uses of the blockchain, while opponents contend that spam should be addressed through market forces rather than protocol changes.

Critics have also pointed to the unusual nature of a soft fork that automatically expires after one year, noting that Bitcoin’s consensus rules have historically been designed as long-term changes rather than temporary experiments.

Farside Investors said it plans to continue publishing updates whenever new BIP-110 signaling blocks are mined, allowing market participants to track the proposal’s progress toward activation.

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