Bitcoin BIP-110 enters mandatory phase at 2.53% support

Bitcoin’s contentious BIP-110 test has moved from signaling into an actual chain split, and the first hours show miners overwhelmingly continuing to build on the existing Bitcoin chain. Summary BIP-110 entered mandatory signaling with just 51 of 2,016 prior blocks supporting the proposal overall. The enforcing branch stalled at block 961,633 while Bitcoin’s main chain reached 961,731 during Sunday. Mandatory signaling runs through block 963,647, with lock-in scheduled no later than block 963,648 afterward. A proof-of-work change remains contingency code, with Chris Guida saying no activation date exists yet. Replay risks remain for holders because transactions may be valid across both chains without separation. The proposal entered mandatory signaling at block 961,632 on Aug. 8 after only 51 of the previous 2,016 blocks, or 2.53%, signaled support. Nodes enforcing BIP-110 then began rejecting blocks without version bit 4. The latest available BIP-110 monitoring data on Aug. 9 showed the enforcing branch stalled at block 961,633 after producing only two blocks. Bitcoin’s non-enforcing chain had already reached 961,731, putting it 98 blocks ahead. The tracker also showed no BIP-110 s...