Bitcoin’s most contentious governance fight of 2026 reaches a scheduled checkpoint this month. The mandatory signaling window for BIP-110 opens near block 961,632, and from that block, nodes enforcing the proposal begin rejecting blocks that do not signal support. The dispute has drawn in mining pools, prominent developers and Strategy chairman Michael Saylor, yet the arithmetic behind it points to a narrow, well-defined outcome rather than an open-ended crisis.
Here is what the proposal does, why it has stalled, and where the genuine risk sits.
What BIP-110 would change
BIP-110 is a proposed one-year soft fork that restricts how much arbitrary, non-financial data a transaction can carry. It bundles seven rules that cap most new outputs at 34 bytes, limit OP_RETURN outputs to 83 bytes and cap individual data pushes at 256 bytes. In practice, those limits target the inscriptions and token payloads generated by Ordinals, BRC-20 and Runes.
Supporters frame the change as a defence of Bitcoin’s role as sound money, arguing that block space should prioritise monetary transactions over arbitrary data. Critics frame the same rules as a form of transaction censorship and warn that enforcing them through a minority soft fork carries a real chain-split risk.
That disagreement is not only technical. It surfaces an older question about who has the authority to decide what Bitcoin’s block space is for.
Why the numbers make activation unlikely
A soft fork of this kind activates only if a supermajority of miners signals support inside the window. BIP-110 sets that lock-in threshold at 55% of blocks. The current signaling tells a clear story.
| Metric | Value |
|---|---|
| Lock-in threshold | 55% of blocks |
| Signaling, mid-July 2026 | below 1% |
| Signaling, late July 2026 | roughly 2% |
| Signaling, early August 2026 | about 2.5% |
Saylor summarised the gap directly on August 4, noting that at block 961,022 the proposal had 38 signals, or 2.70%, and that its “55% voluntary threshold is impossible.” His conclusion was blunt: unless major miners reverse, “Bitcoin continues normally while BIP-110 stalls or forks into irrelevance.”
The pool landscape reinforces that math. F2Pool has refused the proposal outright, AntPool has stayed silent, and Foundry USA opened a hashrate-weighted vote in which non-responses count as a No. With no major pool signaling and a 55% bar, reaching lock-in in this deployment would require a rapid, coordinated reversal that is not currently visible.
Where the real risk sits
If activation is effectively off the table, why the warnings about a split?
The risk is not that BIP-110 succeeds. It is that a determined minority enforces the rules anyway. From block 961,632, nodes running BIP-110 software reject any block that does not signal support. If almost all hashrate keeps producing non-signaling blocks, those minority nodes would follow a different, smaller chain. That is a chain split, and it is a minority-side event rather than a network-wide one.
Developer Luke Dashjr has raised the stakes further by floating a proof-of-work hard fork, a far more disruptive path than a stalled soft fork. That scenario remains a threat rather than a scheduled event, but it explains why some exchanges and node operators are treating the window with caution.
For ordinary holders, the practical picture is narrower than the headlines suggest:
- Running default Bitcoin Core keeps a holder on the chain the majority of hashrate follows.
- A minority split, if it happens, primarily affects those who deliberately run BIP-110-enforcing software.
- The main hazard is transacting during a period of instability, when confirmations on a contested chain can be unreliable.
The market backdrop
The fork debate is unfolding while Bitcoin trades on macro news rather than protocol politics. BTC was near $64,900 to $65,100 on August 7, up modestly on the week after a weak July jobs report reshaped Federal Reserve expectations. Bitcoin’s market capitalisation sat around $1.30 trillion, keeping it close to 57% of total crypto value.
So far, price action shows little sign that traders expect activation. That is consistent with the signaling data: a proposal polling under 3% against a 55% threshold is not a market event in the way an ETF approval or a rate decision is. It is a governance stress test.
What to watch through the window
The useful signals over the coming days are specific and verifiable:
- whether any major pool moves off zero and begins signaling;
- whether Foundry USA’s vote shifts the hashrate-weighted picture;
- whether Dashjr’s proof-of-work hard-fork idea gains any concrete backing;
- how exchanges handle deposits and withdrawals during the window; and
- whether the signaling percentage moves at all toward the 55% bar.
If none of those change, the window closes with BIP-110 unactivated and the base chain unaffected. Verify the live signaling percentage on a public monitor before drawing any conclusion, because block timing shifts the exact dates.
Bottom line
BIP-110’s signaling window is a real, scheduled event, but the data around it does not describe an imminent network split. With miner support under 3% against a 55% threshold and no major pool signaling, activation in this deployment is very unlikely. The residual risk is a minority chain enforcing rules the majority rejects, which is a self-contained event for those who opt into it rather than a systemic one.
Treat the window as a governance test to monitor, not a deadline to trade around, and confirm the signaling figure yourself before acting on any claim about the outcome.
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Sources and review
This article was checked against the primary or authoritative sources below .
- Strategy's Saylor Tells BIP-110 Backers to 'Stand Down' Before Fork — Bitcoin.com News
- Saylor joins Bitcoin's BIP-110 fight as miners get one last chance to avoid forced signaling — CryptoSlate
- Luke Dashjr Threatens PoW Hard Fork as BIP-110 Fails to Hit 55% Threshold — TFTC
- Bitcoin Could Split in Two This Weekend: What Holders Need to Know — BeInCrypto
- BIP 110 Signaling Monitor — Bitcoin Magazine
Frequently asked questions
BIP-110 is a proposed one-year Bitcoin soft fork that would restrict arbitrary non-financial data in transactions. Its rules cap most new outputs at 34 bytes, OP_RETURN at 83 bytes and data pushes at 256 bytes, which would limit inscriptions and token protocols such as Ordinals, BRC-20 and Runes.
The mandatory signaling window opens near block 961,632, estimated for early-to-mid August 2026, and runs to roughly block 963,647. From the opening block, nodes running BIP-110 rules reject blocks that do not signal support.
Activation needs 55% of blocks in the window to signal support. As of early August 2026, signaling was under 3%, so activation in this deployment is very unlikely unless major mining pools reverse course.
For most holders running default Bitcoin Core, no action is required to stay on the chain the majority of hashrate follows. The main risk is a minority chain split, which would only matter to holders who deliberately run BIP-110-enforcing software or transact during instability.
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