Bitcoin's Anti-Spam Fork Mined Two Blocks-and Stalled at 2.5% Miner Support

Miner support collapsed before the fork mattered

Bitcoin's anti-spam fork lost the only score that mattered: miners did not back it. By 06:34 UTC on Aug. 9, the enforcing branch was still only two blocks tall at height 961,633, while the main chain had reached 961,690 - a 57-block gap. That was not a timing issue. It was a real-time vote count showing the fork failed to gather mining power.

Why the support numbers were already decisive

Earlier in the period, only 24 of 946 blocks had signaled, or 2.54%, while BIP-110 needed 1,109 of 2,016 for lock-in. Even before the split deepened, the proposal asked miners to do something the network had not shown willingness to do: enforce a new rule set with meaningful hashpower. The fork then failed in public.

The governance debate was straightforward. Supporters wanted Bitcoin to act faster on chain clutter, using 55% miner support instead of near-consensus. Critics argued that sets a dangerous precedent and can divide the community. The immediate takeaway for BTC was not activation - that was still stages away - but confidence. A minority enforcing branch, stale blocks, and hashrate support is under 1% point to a proposal that lacked broad miner backing.

Why the split did not become a new Bitcoin baseline

This only mattered because the market briefly feared a real Bitcoin split. The reason that fear faded was mechanical.

BIP-110 was a soft fork, not a new monetary layer

BIP-110 tightened existing rules rather than expanding them. It would impose an 83-byte consensus limit for OP_RETURN outputs, so every block valid under the new standard would also have been valid under the old one. That is the definition of a soft fork, and soft forks only stick when the network chooses them. As soon as BIP-110 nodes started rejecting non-signaling blocks, the branch stopped being a proposal and became a minority enforcement path.

That is why traders did not get a new Bitcoin. They got a smaller, self-selected chain enforcing stricter rules while the broader network kept running standard blocks. In practice, that is different from a reorg. A reorg implies history is being rewritten by miners and the market. Here, the enforcing nodes simply separated themselves from the default chain.

The software was arranged to survive separation

The isolation was not accidental. BIP-110 nodes aggressively attempt to connect to 8 outbound BIP-110 nodes and only connect to 0-2 non-BIP-110 nodes as an optional sidecar. That peering design is not neutral; it assumes the possibility of a partition and reduces reliance on the wider network.

For market readers, that matters. If proponents truly expected to win, the natural strategy would be to stay deeply connected to the main node graph and push for visibility and adoption. Instead, the setup minimized dependence on the broader network from the start. That made the outcome look less like a coming consensus victory and more like a minority branch accepting isolation.

The main chain kept operating as Bitcoin

The fork risk faded because the split was effectively one-way: the enforcers isolated themselves while the dominant chain kept processing blocks under the existing rule set. The observed outcome matched that mechanism. The market saw Bitcoin continues normally, not a competing settlement layer taking over.

For traders, the practical point is simple. When a proposed upgrade behaves like a minority enforcement fork with built-in isolation, the likely result is irrelevance, not a new baseline. BTC remained tied to the main chain's liquidity and hashpower, not to a stalled side branch.

How to read the aftermath

The failed fork is now a trading filter, not a portfolio emergency. The enforcing branch stalled, while the dominant chain kept extending and Bitcoin continues normally. That shifts the job away from split panic and toward how the market reacts after a governance scare that already lost the only vote that mattered.

The base case is calmer pricing; the bear case is about confidence

The base case is straightforward. With the enforcing branch stalled and no sign that miners want to relit the fight, this episode should lose price impact quickly. Bulls can argue that clears the air: leverage gets shaken, attention moves on, and BTC can return to flows, liquidity, and momentum.

The bear case is also reasonable, but it should be treated as a view rather than a fact. Bears argue that serious split fears exposed Bitcoin's social fault lines and showed how fragile confidence can be when miners refuse to back a proposal. That matters only if the market keeps repricing BTC for a split that, mechanically, did not happen.