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BIP-110 fork stalls after miners refuse to run proposed changes
The split began at block 961,632, and the enforcing fork remained stuck about 17 hours behind the main Bitcoin chain with no blocks signaling support.
Bitcoin’s proposed BIP-110 update stalled after the network split, with nodes running the software breaking away from the main chain when blocks failed to signal support, according to Bitcoin Magazine. The enforcing branch rejected blocks that did not signal version bit 4 after the proposal entered its mandatory signaling window at block 961,632 on Saturday.
Bitcoin Magazine reports that a pseudonymous mining group called Roughnecks produced the BIP-110 blocks at heights 961,632 and 961,633 using Ocean’s DATUM protocol, then stopped. By Sunday afternoon, the fork remained stuck at 961,633 while the dominant Bitcoin chain advanced to 961,744, leaving a gap of 111 blocks, or roughly 17 hours without a new block on the fork.
The material says support was insufficient for the proposal, with only 51 of 2,016 blocks in the preceding difficulty period signaling for BIP-110, about 2.5%, compared with the 55% threshold needed for voluntary lock-in. After the mandatory window opened, Bitcoin Magazine adds that none of the first 113 blocks on the dominant chain signaled, and the fork inherited the main chain’s difficulty but had only a negligible share of hashpower.
Bitcoin Magazine also notes that difficulty adjustment could compound the problem because the fork cannot make mining easier until it completes a full 2,016-block period, with estimates ranging from under a year to decades depending on assumed hashrate. BIP-110, formally the Reduced Data Temporary Softfork, would have capped arbitrary data in transactions for about a year, targeting Ordinals inscriptions and oversized OP_RETURN payloads, and Michael Saylor and Blockstream’s Adam Back opposed the activation method.
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