BIP-110 Fork Resulting from Bitcoin Network Split Falls 18 Blocks Behind

cryptonews.ruPublished on 2026-08-09Last updated on 2026-08-09

Abstract

A fork of the Bitcoin network, created by a split over BIP-110 implementation, is now 18 blocks behind the dominant chain. The fork was triggered after Bitcoin surpassed the BIP-110 signaling threshold at block 961632. Proponents of BIP-110, including Bitcoin Knots creator Luke Dashjr and anonymous developer Daton Om, have issued warnings, stating the Bitcoin network is under attack by hostile miners and urging users to upgrade software to avoid accepting fraudulent transactions. The mining pool Roughnecks, supporting BIP-110, mined competing blocks at heights 961632 and 961633, but remains on a minority chain with drastically reduced hash power. A recent difficulty adjustment to 127.48 trillion has made mining new blocks on this chain exceedingly slow. Notably, hash power associated with Ocean Mining—closely linked to the BIP-110 camp—mined a block (961634) on the dominant chain, indicating a lack of unified support for the fork. Some BIP-110 supporters express defeat, while others discuss potentially changing the minority chain's proof-of-work algorithm. Dashjr asserts that updated full nodes are protected from the perceived attacks, framing the situation as a conflict between updated and vulnerable network participants.

After two years of fierce debates, Bitcoin surpassed the BIP-110 signaling threshold at block 961632, and now reality speaks for itself as $BTC blocks continue to pile up. BIP-110 supporters appear stunned by the outcome, while Bitcoin Knots creator Luke Dashjr has issued a statement to everyone.

"Important warning: If you have not yet upgraded to Bitcoin Knots 29.3.knots20260508 (or 29.4), you are now vulnerable to double-spend attacks assisted by [Foundry and Antpool]," Dashjr wrote on social network X. In bold, he also added: "Upgrade as soon as possible to avoid accepting fake bitcoins."

Da Ton Om, an anonymous BIP-110 developer, also spoke out on X and further emphasized:

"The Bitcoin network is currently under attack by hostile miners."

Roughnecks Gains Momentum Again as Main Bitcoin Chain Pulls Ahead

As previously reported by Bitcoin.com News, the BIP-110-supporting mining company Roughnecks directly competed with Antpool for block 961632. Antpool won the race on the dominant Bitcoin chain, while the competing block 961632 from Roughnecks remained on the BIP-110 version. Since then, Roughnecks has managed to mine another block on the minority chain at height 961633.

Adding another twist to an already chaotic situation, Bitcoin's mining difficulty also adjusted at height 961632, rising to 127.48 trillion just as the blockchain split into competing versions. This difficulty jump makes life particularly hard for the BIP-110 minority chain.

Image source: mempool.kilombino.com, showing two consecutive BIP-110 blocks mined by Roughnecks.

Bitcoin's mining difficulty does not magically decrease when the majority of miners leave, meaning Roughnecks and its allies are still trying to solve blocks at the same target difficulty of 127.48 trillion, but with only a tiny fraction of the main chain's hashpower. Unless significantly more hashpower joins the split-off chain, blocks will appear at agonizingly slow intervals, effectively leaving BIP-110 stuck waiting for enough blocks for the next difficulty adjustment.

Hashpower Linked to Ocean Mining Breaks Ranks on Dominant Chain

Another surprise regarding the split: Simple Mining, a major hosting provider from Iowa directing hashpower to Ocean Mining, mined block No. 961634 on the dominant chain. Simple Mining uses Ocean's DATUM system, which allows individual miners and hosters to create their own block templates, including choosing whether to set the BIP-110 version bit.

Image source: X

This makes the block particularly noteworthy. Ocean is closely associated with the BIP-110 camp: Dashjr holds the CTO position of the pool, and a large portion of the early signals supporting the proposal came from Ocean and DATUM miners. Yet, Simple Mining's block landed squarely on the dominant Bitcoin chain — another sign that hashpower linked to Ocean is not marching in step with the BIP-110 minority fork.

Roughnecks Continues 'Wildcat Mining' on Split-Off Chain

Roughnecks Mining Division 110 celebrated successfully mining two consecutive BIP-110 blocks — 961632 and 961633 — comparing this achievement to "wildcat oil drilling" on oilfields, where speculators make large bets on untested plots in hopes of striking oil. Whether this holds true remains to be seen. After Roughnecks published, a Dashjr user reposted this post on X.

BIP-110 Supporters Insist Bitcoin Is Broken and Are Prepared to Change PoW Algorithm for Minority Chain

BIP-110 supporters have not taken this outcome well. "RIP, Bitcoin. You've just become another captured speculative asset. Sorry, Satoshi, we failed you," lamented one X user and BIP-110 supporter under the handle BTCbello. One of the most active and recognizable BIP-110 proponents, Matthew Kratter, acknowledged that it would now take "a real miracle" for the BIP-110 chain to overtake the main chain.

Dashjr also informed users that "BIP-110 is active on the Bitcoin network. Malicious pools and miners are attacking the network, deceiving old nodes and light wallets. Users using updated full nodes (i.e., versions 20260508) are unaffected."

Meanwhile, other BIP-110 supporters still signaled willingness to change the minority chain's mining algorithm. "We have nothing to lose by starting from scratch with a POW algorithm. There's huge potential and freedom in this — the chance to clearly see what just happened and make the necessary adjustments to preserve the system. This is Independence Day for sound, decentralized money," wrote user Maitreya Lockwood in an X account in response to Kratter's latest video on the topic.

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Related Questions

QAccording to the article, what is the current status of the BIP-110 fork in relation to the main Bitcoin blockchain?

AThe BIP-110 fork is lagging behind the main Bitcoin chain by 18 blocks.

QWhat is the key security warning issued by Luke Dashjr regarding the BIP-110 fork event?

ALuke Dashjr warned that users who have not updated to Bitcoin Knots version 29.3.knots20260508 (or 29.4) are vulnerable to double-spend attacks facilitated by certain mining pools and should update immediately to avoid accepting fake bitcoins.

QWhich mining company is actively mining on the minority BIP-110 chain, and what term did they use to describe their activity?

AThe mining company Roughnecks is actively mining on the minority BIP-110 chain. They described their activity as 'wildcat mining,' comparing it to speculative oil drilling.

QWhat significant change occurred to Bitcoin's mining difficulty at the time of the chain split, and what is its impact on the BIP-110 chain?

AAt block height 961632, when the split occurred, Bitcoin's mining difficulty increased to 127.48 trillion. This makes it extremely hard for the minority BIP-110 chain to find new blocks, as they must meet the same high difficulty target with only a fraction of the total hashpower, causing blocks to be found at a painfully slow rate.

QWhat drastic measure are some BIP-110 supporters reportedly considering for the minority chain?

ASome BIP-110 supporters are signaling a readiness to change the Proof-of-Work (PoW) algorithm for the minority chain, viewing it as a chance to start fresh and build a more robust and decentralized monetary system.

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