Bitcoin BIP-110 Moves to Mandatory Signaling Amid Low Miner Support

BIP-110 Enters Mandatory Signaling

Bitcoin Improvement Proposal BIP-110 has entered its mandatory signaling phase with only 2.53% support from miners. This transition follows a contentious testing period, now marking a significant step towards a potential chain split. As of August 8, 2026, the proposal achieved this phase starting at block 961,632, with just 51 out of 2,016 prior blocks indicating support.

Current Status and Chain Dynamics

The enforcing branch of BIP-110 currently stalled at block 961,633, while Bitcoin’s main chain has progressed to block 961,731. This indicates a substantial gap of 98 blocks, showcasing a clear divergence in miner support. Mandatory signaling is expected to continue through block 963,647, with an activation lock-in scheduled no later than block 963,648.

Miner Support and Future Implications

Despite BIP-110’s mandatory signaling initiation, it is failing to gain traction, as reflected in the miner signaling rates. With only 2.6% of miners supporting the initiative, the possibility of the proposal becoming operational diminishes. If the current trend continues, BIP-110 may face stagnation or eventual irrelevance, as Bitcoin’s primary chain operates normally without the enforced rules of BIP-110.

Concerns Surrounding Replay Attacks

Another critical concern raised by the introduction of BIP-110 is the risk of replay attacks for Bitcoin holders. Transactions may be valid across both the enforcing and non-enforcing chains, leading to potential complications if users are not cautious with their transactions post-split.

Future Steps and Approval Process

The proposal requires an additional 1,109 out of 2,016 blocks within a difficulty period to secure an earlier lock-in, equating to 55% miner signaling. Recent data indicates a glaring lack of consensus, with only 51 blocks signaling support, further entrenching the view that BIP-110 lacks broad approval among miners. Verifications regarding BIP-110’s broader governance implications remain contested within the Bitcoin community.

Conclusion

As Bitcoin proceeds with the mandatory signaling until block 963,647, stakeholders will closely monitor miner activity on both chains. A shift in miner support could spell different outcomes for BIP-110, determining its fate and the implications for the Bitcoin ecosystem.